Although whole house fans are not as well-known as air conditioning units, they have many advantages that are causing them to gain popularity today.

Whole house fans are very simple in concept, yet they can have a significant impact on both the temperature of your home and your energy cost because of the way they are designed and built. Rather than cooling the air in your home, they work by moving cool, fresh air from the outside in.

There are several different types of whole house fans on the market, and deciding which one best suits your needs can be challenging. To help you understand more about whole house fans, we have created a complete guide to the best whole house fans, as well as answers to other commonly asked questions about the product.

Best Whole House Fans

Best Whole House Fans

Below is a list of some of the best whole house fans for your reference. To achieve the best results, choose the brand that addresses your particular needs.

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QuietCool Whole House Fan

Best overall

The QuietCool QC CL-1500 provides whole-house ventilation by delivering cooler outdoor air into your home and attic area, effectively cooling and ventilating both the home and attic. It has a capacity of 1,472 CFM and only uses 117 watts, allowing you to save on your energy bills.

It incorporates an acoustical duct and an R5 damper box. As a result, there is nearly no noise vibration and the operation is almost silent. You can’t even tell it’s turned on, allowing everyone in the home to relax. Plus, the R5 dampers ensure there will be no cooling loss between the home and attic, allowing the house to stay cool even on a hot day. Another benefit is that the fan may be used in conjunction with a smart switch. You can use the auto-on and timer feature to regulate the temperature in your home to your liking.

Because of its energy efficiency, optimum cooling capabilities, and quiet operation, we rated this as the best overall.

Tamarack Whole House Fan

Best for energy efficiency

Based on our experience and testing, the Tamarack Whole House Fan is one of the best energy-efficient fans which can circulate up to 1000 CFM of air per minute and can help save up on heating and cooling costs. Despite its power, it’s surprisingly quiet, making it great for those who are sensitive to noises at night.

Plus, due to its detailed instructions and simple design, this fan is user-friendly and straightforward to install.


Best for small spaces

Although it is not suitable for larger homes, the AC Infinity AIRTITAN T7 is a great cooling solution for small spaces. It comes with a wall adapter, programmable controller, and LCD display with smart thermostat control and adjustable fan speeds.

Even in spaces with strong odors, AC Infinity AIRTITAN T7 can totally eliminate the musty odor and cool the space shortly after turning on the fan. Additionally, basements can be excessively humid in the summer and too hot in the winter. The AC Infinity AIRTITAN T7’s programmable controller lets you customize the temperature of your basement to your liking.

Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Attic Fan

Best for maximum cooling

The Cool Attic CX24DDWT Direct Drive 2-Speed Whole House Attic Fan has a steel venturi air blower and precision-balanced galvanized steel fan blade assembly for added durability. Because of how this fan is designed and built, we considered this the best for maximum cooling, especially during hot days.

In hot weather, you can cool the interior and attic early in the morning or at night. Due to its power (3,200 CFM on the low setting and 4,600 CFM on the high setting), it’s possible that you won’t need to use the fan after it is turned off for the day. If so, it has a ceiling mount with an automated shutter that closes when not in use, ensuring that no cool air leaks out. This product also includes a wall switch with dual high/low and on/off settings.

Centric Air 3.4(R5) Ultra Quiet & Energy Saving Whole House Fan

Best for low operating costs

We found the Centric Air 3.4(R5) to be one of the most cost-effective fans. Centric Air whole house fans employ a German-engineered fan that has a CFM of 3,242 while being quiet.  It consumes 382 watts of electricity and costs only $0.08 per hour to run.

When compared to utilizing an air conditioner to chill your home, you will undoubtedly save money with Centric Air 3.4(R5). Due to its cost-effectiveness, we consider it a good investment if you’re looking to save.

What Is a Whole House Fan?

What Is a Whole House Fan?

A whole house fan is a cooling system that circulates air throughout a home and offers enough attic ventilation and cooling. Whole house fans are energy efficient, less expensive than air conditioning, and capable of cooling the entire home when needed.

Depending on the design of your house, whole-house fans come in four types that you can choose from:

  • Ceiling-mounted: These types are installed in the ceiling that divides the attic from the living area of the house.
  • Ducted: Ducted fans are distant from the ceiling, such as in the rafters, and are used to remove heat from many different areas of the house.
  • Rooftop-mounted: Whole house fans are put on the roof in homes without an attic.
  • Window-mounted: These fans are placed in a window frame and draw in cold air from outside.

How Does a Whole House Fan Work?

How Does a Whole House Fan Work?

A whole house fan works by producing negative pressure at home. The fan draws air in through open windows, bringing fresh, cold outdoor air into your house. As negative pressure in your home rises, positive pressure rises in the attic. As the pressure in the attic rises, it is relieved by blowing air out through the soffit vents in your eaves or other attic vents. The air is then recirculated via the home’s vents, where you can experience a steady stream of cool air within your home.

A whole house fan cools the home fast and effectively while using less energy, allowing you to avoid operating the air conditioner, which is nearly always more expensive to operate than the fan.

A whole-house fan also has controls that let you set your thermostat and timing according to your preferences.

Read our detailed guide for more information on how whole house fans work.

How To Use a Whole House Fan?

How To Use a Whole House Fan?

Whole house fans function by pulling cooler air in and pushing heated air out through rooflines or vents. Therefore, when the outdoor temperature is significantly greater than the internal temperature, whole house fans won’t be as effective.

Here are things you need to consider in using a whole house fan:

  • Use your whole house fan only when the outside air is colder than the air inside your home.
  • To allow the fan to work properly, two or more windows should be opened halfway or wider. If you have many windows, you may be able to crack them open a few inches. Either way, this will allow the fan to pull air from outside.
  • Since the purpose is to cool the entire house, not just the air, run the whole house fan all night. By ventilation throughout the night, the house is cool the next day, eliminating the need for air conditioning.
  • Keep in mind that there is always a risk while the whole house fan is running if you have a gas-burning appliance, such as a water heater, kitchen oven, furnace, or boiler. That’s why it is very important to make sure a sufficient number of windows are open while the whole fan is turned on.
  • When the entire house fan is switched on, always close the fireplace dampers. Most fireplaces and flues are clogged with dirt, ashes, and debris, which should not be blasted into your home by the whole house fan.

How Much Does a Whole House Fan Cost?

How Much Does a Whole House Fan Cost?

According to Costimates, a whole house fan can cost anywhere between $600 to $1,200, depending on the quality of the unit, location, and add-ons. The cost of installing a whole house fan also varies based on whether it is a direct or indirect mount, the size of the fan unit, and whether or not permits and inspections are necessary for your location.

How Much to Install a Whole House Fan

Installing a whole house fan on your own with a wall switch can cost roughly $350 for a simple fan and shutters. However, if you hire a handyman or professional electrician, it will cost between $850 and $1,100 for whole house fan installation.

What Size Whole House Fan Do I Need?

What Size Whole House Fan Do I Need?

It is advised that you install a whole house fan with a CFM rating of 2 to 3 times the square footage of your home. CFM stands for cubic feet of air per minute of operation and is used to describe the output rate of an air compressor. So, for example, if your home is 2,000 square feet, you’ll need a whole house fan with a CFM rating of 4,000 to 6,000.

According to specialists at the Department of Energy, the number of air changes necessary in a residence is used to calculate whole house fan size. A whole house fan should produce 3 to 6 air changes every hour. One air change means completely replacing the air within the residence with fresh air. That is, in essence, the volume of the house’s living spaces. So, if your house is 2,000 square feet and you have an average height of 8 feet, the total volume of air that has to be changed is 16,000 cubic feet.

Whole House Fan vs Attic Fans

While both a whole house fan and an attic fan assist to ventilate and cool a house, there is one significant difference: the areas they address. A whole-house fan pulls air from every room in the home and moves it through the attic vents. An attic fan extracts air from the attic and exhausts it outside. If the temperature outside is cooler than the temperature within your home, whole house fans are more effective at cooling your home than attic fans since they move air throughout the house.

Attic fans, on the other hand, are easier to install compared to whole house fans. If you have a power supply in the attic, attic fans can easily be installed.

Whole House Fans Pros & Cons


  • Lower usage of energy: In comparison to air conditioning, whole-house fans consume less energy. This results in lower energy expenditures, which is especially beneficial during the summer.
  • Fast and effective: Whole house fans can cool homes within a few hours (or even less in small homes) by releasing heated air and pulling in cool air.
  • Affordable and cost-effective: When compared to air conditioning, whole house fans are cheaper to install. Whole-house fans also require less maintenance and are inexpensive to operate.
  • Replaces stale air: Since whole house fans push air from the outside in, the fresh air will replace stale indoor air.
  • Easy to install: Most whole-house fans come with complete and detailed instructions for DIY installation.


  • They can be noisy: Some whole house fans, especially older ones, can be loud.
  • Requires open windows: This can be a disadvantage for some, particularly in locations where insects and allergens can easily enter the house through windows.
  • Not suitable when the outdoor air quality is low: If the outdoor air quality is low, a whole house fan will push that into your home, which may cause health problems.
  • Not effective for all climates: Whole house fans are perfect if the outside temperature is cooler than the inside of the house. In really hot locations, they will not save as much energy and will not be practical to use. In humid weather, it may wind up bringing the humidity into the house.


Whole house fans, without a doubt, provide several advantages. You don’t have to have your air conditioner running all the time because of the speedy cooling of a whole house fan. The cost of the installation and full operation of a whole house fan is very affordable, and it provides several advantages. Finally, because of the way a whole house fan operates, your home will be healthier, as it will replace stale, polluted indoor air with fresh, outdoor air.

Hot attics don’t have to be an inevitability. Without proper ventilation, attic temperatures can reach up to 150 degrees during the hottest days of the year. These temperatures can soar even higher in hot climates. There are two possible avenues for reducing the hot air trapped in your attic: whole house fans and attic fans. Choosing the right one can make your home’s living spaces more comfortable.

Whole house and attic fans perform similar functions, mainly improving ventilation. Before deciding between the two, it’s best to understand their pros and cons of attic fans and whole house fans. Read on to learn about many of the important factors that may influence your decision.

What Are Whole House Fans?

what are whole house fans

A whole house fan is a cooling system used to eliminate or reduce the need for artificial cool air, which can reduce the strain on your air conditioning system. Many homeowners appreciate this device because it produces about one-third as much electricity as a standard air-conditioning unit. Reducing your electricity can result in lower energy bills and cooler airflow throughout your home. You can turn on this machine when the temperatures outside drop to use the cool air to ventilate your property.

Here are some things to remember about whole house fans:

  • You mount them between your living space and attic.
  • It’s best to use them in the evening and early morning — or any time the temperature is much lower outside
  • These instruments pull warm indoor air toward the attic and push hot air out of your home.
  • When you open windows in your living spaces, they draw cool air from outside.
  • As they cool your living spaces, they drive heat buildup out of your entire home.

What Are Attic Fans?

what are attic fans

Attic fans draw hot air out of your loft and push it outside. They work well with your heating, ventilation, and air-conditioning (HVAC) systems.

Unlike whole house fans, it’s best to use attic fans during the hottest times of the day to reduce heat buildup. Doing so helps you ventilate your attic space only.

Below are some features of attic fans:

  • You mount them between your attic and outside space.
  • It’s best to run attic fans when it’s hot outside.
  • These mechanisms actively remove hot hair from the attic.
  • They create negative pressure in your loft and pull outside air through the roof.
  • These instruments minimize the heat buildup in your attic and keep temperatures as comfortable as possible.

What is the difference between a whole house fan and an attic fan?

In a nutshell, below are some of the factors that differentiate whole house fans from attic fans.

Keep reading to delve deeper into the mentioned components.

Major Differences

One of the most obvious differences between whole house fans and attic fans is the areas they serve. While a whole house fan pulls out air from the entire house, an attic fan only works its magic in the attic.

Depending on your whole house fan’s capacity and home size, your electrically powered machine can change the air up to six times per hour. Your attic vents open and close in sync with the fan’s movements.

It’s essential to allow one square foot of opening for every 750 cubic feet per minute (CFM) of fan capacity for whole house fans to perform optimally. You can use various vent types, including dormer, eave, or ridge to stimulate attic venting.

On the other hand, attic fans or attic ventilators dispel hot air from the attic based on the signal from your thermostat. You also need air intake. There are two usual attic fan types:

  • Gable attic fans: You can mount this fan type on your existing gable. As soon as temperatures drop, they push warm attic air out of the gable.
  • Roof attic fans: As the name suggests, you can find a roof attic fan partially inside the attic and partially toward the roof. It should not be closer than two feet to your roof’s ridgeline.



Winner: Attic Fans

Whole house fans end up in your attic, but you have to connect them to your ceiling through a vent. In most cases, they span 36 to 40 inches. This length should be long enough to cover ceiling joists.

Attic fans are always less visually obtrusive than whole house fans because you don’t need to connect them to your living space. However, if you put an attic fan behind an existing gable vent, you can almost see it from the outside. Gable attic fans are not as noticeable as whole house fans because they can fit behind a gable’s opening vent.

The Installation Process

whole-house-vs-attic-fan_the installation process

Winner: Attic Fans

If your attic has live electric power, the most challenging part of installing whole house fans is going through walls to attach the damper box to ceiling joists. Naturally, big fans are more complicated to install. However, you can use 20-inch vent tubes to suspend your fan with ranger straps.

On the flip side, attic fans are easier to install than whole house fans. You can install one quickly as long as you have a power source in the attic. However, keep in mind that this process becomes more difficult if you have powered roof vents because you need to make a hole in the roof.

Cooling Capabilities

whole-house-vs-attic-fan_cooling capabilities

Winner: Whole House Fans

As long as the temperature outdoors is lower than inside your home, whole house fans will work to your advantage. During such times, you can use these machines instead of energy-hungry air-conditioning units.

In most cases, whole house fans are better at cooling your home than attic fans because they move cool air throughout the house. Attic fans are not the same as standard room fans, but you can feel the temperature difference when you turn them on.

Attic fans may cool your home, but you might not need them if you have a well-insulated property. Attic fans are designed to produce to circulate fresh air throughout your home, reducing humidity and increasing energy efficiency.

However, if your attic has poor insulation, attic fans can help you cool down the living areas. These appliances drop home temperatures by reducing the heat in the attic and never move air around the house as whole house fans do.

One bonus benefit of using attic fans is preventing mold and mildew growth in your home.

Ease of Operation

whole-house-vs-attic-fan_ease of operation

Winner: Attic Fans

Whole house fans require you to manually turn them on and off. You’ll also have to open screen doors before you can open the fans.

However, there are ways to make the process more convenient for users. For instance, you can install a pull cord from the ceiling or a wall switch. One major drawback is that these machines only work when the air outside is colder than the air in your house.

For attic fans, you won’t have any trouble operating them as long as you install them properly. It’s also best to have easy access to a switch. However, these appliances can turn on and off automatically. If the temperature inside your attic shoots up, the mechanism will send the fan a signal to turn on.

Noise Levels

whole-house-vs-attic-fan_noise levels

Winner: Whole House Fans

Older whole house fan models are known for their noise, especially after many months of use. The moment your fan blades get weak, they knock around the machine as they turn. Loud sounds are signs that you might need to replace your fans.

However, whole house fans have evolved into quiet indoor tools. You can find some on the market with lower sound levels than 42 decibels — just like a quiet library.

On the other hand, attic fans are mechanical devices that can be noisy. They may be several feet away from the gable but they can still reach high sound levels. If you find that they make too much noise for you, you can check out soundproofing options.

What is better an attic fan or whole house fan?

Winner: Tie

Attic fans tend to look better and they are easier to install and operate. However, there’s no one-size-fits-all solution for any home, so the best home improvement project will be customized to your home’s needs. Also, remember that these products are not mutually exclusive. If you need whole house and attic fans to make your home more comfortable, you can install both of them on your property.

If you need to keep your whole house cool during the hotter days of the year, it’s best to go with whole house fans. And if you want to add ventilation to your attic, choose attic fans. Now that you understand their similarities and differences better, you can determine which product is the best fit for your home.

Frequently Asked Questions

Is a whole house fan expensive?

Whole house fans can be expensive when you factor in the cost of installation and ongoing operation, but it is a worthwhile home improvement investment if you’re struggling to circulate cooler air or improve your central air conditioning’s efficiency. Whole attic fans can range from $500 to $2,000 depending on the size of the fan, brand, type, and ease of installation. According to HomeServe, the average fan can cost anywhere from $200 to $400, but the installation can cost an additional $600 to $1,200. Whole house fan installation is roughly $3,000 to $5,000 less compared to central air conditioning costs.

Can a whole house fan be used as an attic fan?

Whole house fans are designed to run in the evening and after sunset to circulate cooler air throughout your home, while attic fans are designed to turn on during hot days. Whole house fans work to cool your entire living space whereas attic fans primarily cool your attic. However, insulation and other forms of ventilation can improve the comfort of your home as well.

Are attic fans important in cold climates?

Attic fans are important in cold climates, despite their reputation for cooling your home in the warmer months. Well-insulated and well-ventilated attics prevent heat build up, which can reduce ice damming.

Additional Attic Fan Resources

If you’re a homeowner, you may hear strange popping noises coming from your air ducts from time to time. But what are these noises and why do they happen? In this blog post, we’ll explain everything you need to know about these mysterious pops and tell you what you can do to fix them. Keep reading to learn more!

Reasons Why Air Ducts Make Popping Noises

There are a few different things that could be causing the popping noises in your air ducts.

Expansion and contraction

One possibility is that the noise is coming from the expansion and contraction of the metal ductwork itself. This can happen when the temperature inside the ductwork changes, causing the metal to expand or contract slightly. This type of movement is usually not enough to cause any damage to the ductwork, but it can produce a popping noise.

Loose Components

Another possibility is that the noise is coming from loose components inside the ductwork. This could include anything from screws and nails to pieces of insulation or other materials. When these objects become loose, they can rattle around and produce a popping noise.


In some cases, the popping noise may be coming from pests that have made their way into the ductwork. This is most common in homes that have not had their ducts cleaned in a while, as dirt and debris can provide a perfect hiding spot for rodents and other small creatures. If you think this may be the case, it’s important to have your ducts cleaned as soon as possible to prevent further damage and remove the pests.

Closed Dampers

Dampers are located throughout the ductwork and are used to regulate the flow of air. When a damper is fully closed, it can sometimes produce a popping noise. This is usually nothing to worry about, but if the noise is accompanied by a burning smell, it’s important to contact a professional as it could be a sign of a more serious problem.

Dirty Air Filters

Another common cause of popping noises is dirty air filters. When the filter becomes clogged with dirt and debris, it can restrict the airflow and cause the sides of the filter to expand and contract. This can produce a popping noise, as well as increased energy bills and reduced indoor air quality.

When Is the Popping Noise a Real Problem?

Some popping noises that come from your ducts are perfectly normal. However, there are a few instances when the noise can be a sign of a bigger problem.

If you hear popping noises coming from your ductwork, it’s important to take note of any other symptoms that may be present. For example, if the noise is accompanied by increased energy bills or reduced indoor air quality, it’s likely that there’s a problem with your ductwork that needs to be addressed.

In some cases, the popping noise may be accompanied by a burning smell. This is usually an indication of a more serious problem, such as a fire in the ductwork. If you notice this symptom, it’s important to contact a professional immediately.

How to Fix the Popping Noise

If you’re hearing popping noises coming from your air ducts, the first step is to identify the source of the problem. Once you know what’s causing the noise, you can take steps to fix it.

If the noise is coming from expansion and contraction, there’s not much you can do to stop it. However, if the noise is coming from loose components, you’ll need to locate the source of the noise and secure the component. This may require disassembling part of the ductwork.

If the popping noise is being caused by pests, you’ll need to have your ducts cleaned as soon as possible. This will remove the pests and any dirt and debris they may have left behind.

If the noise is coming from a closed damper, you can try opening the damper slightly to see if this stops the noise. However, if the noise continues or is accompanied by a burning smell, it’s important to contact a professional.

Finally, if the popping noise is being caused by a dirty air filter, you’ll need to replace the filter with a new one. It’s important to check and clean your air filters on a regular basis to prevent this problem from occurring.

If you live in the U.S., you’ve likely experienced summer heat. Not only is this unpleasant but it also results in increased electricity bills. So, what do you do? One option is installing a whole house fan.

A whole house fan is a great way to circulate cool air throughout your home. It’s not as common as your traditional air conditioner, but it’s actually much better at controlling how cool or warm your air is. It can be a practical one-off purchase that will help you save money on your electric bill for years to come.

In this article, you’ll learn how a whole house fan works.

Whole House Fans: How Do They Work?

A whole house fan is a large fan installed up in your attic connecting to vents around all areas of the house.

You’ll need to open your windows at cooler times of the day. The ventilation system pulls cool air in and circulates it throughout your home and eventually through the attic, where it is then released into the air outside.

So, what happens when you turn a whole house fan on exactly?

Here’s a quick run-down of how whole house fans work:

  1. Through your windows, a whole house fan draws in cooler air from the outside using a motor. The motor then pushes this air through ducts throughout the house, pulling warm air into the attic and pushing it through the venting system.
  2. When hot air rises into an attic space, some of it passes through vents in the roof on its way out through upper-story windows or skylights. Most of the hot air goes straight up into an attic space where it can build up over time if there aren’t any fans present to move it out again quickly enough.
  3. The fan draws in cool air from the outside until the temperature inside is as cool as desired. It stops drawing air in and turns off so that no more cool air is wasted.
  4. The cooled air then travels through a duct system to another vent at the back of the unit. From there, it’s pushed through various vents throughout your home’s living areas by way of another motorized fan blade that sits inside each vent opening.

The fan is powered by electricity. You can turn it on with a remote control or an app on your phone. When you’re not using it, it’s designed to shut off automatically after a certain amount of time.

This process can lower temperatures by around 10-20 degrees Fahrenheit when running at total capacity within just five minutes.

As temperatures rise, so does the humidity. The hot air rises into the attic space, mixing with cooler air coming into the house through open windows. Consequently, moisture is drawn from under the roof decking up to the area above the fan blades where it can be ventilated directly out of the building via a vent at the top or side.

Why Whole House Fans Are a Great Choice

Compared to previous generations, modern whole-house fans are more efficient. This efficiency has been achieved through improved vacuum and lubrication systems.

With the help of airflow sensors, these systems can reduce the energy consumption of your air conditioning by up to 20%. A whole house fan also produces less noise when operating than other types of cooling equipment since it is directly connected to the cooling unit.

With whole-house fans, you can enjoy nearly continuous cool air in any room of your home or building.

Climate control is something you may not think about often, however it is an important part of our daily lives.

A stable temperature within our homes and work environments can make a difference in how we feel throughout the day, and how effective we are in our work. It can even affect our health.

Thankfully there are several available options for heating, cooling, and maintaining temperatures indoors. One of the many options considered is a heat pump. In the below article, we’ll discuss what a heat pump is and address how they work.

What is a Heat Pump?

What is a Heat Pump?

Heat pumps are mechanical devices that can take heat from one medium and transfer it to another, for the purpose of cooling or heating a living space.

There are all kinds of heat pumps, all which achieve the desired goal of transferring heat. In practical terms, this means being able to heat or cool your home successfully. This article will focus on all the benefits that come with using a heat pump for your home.

So, what exactly is a heat pump?

To put it simply, it’s an air conditioner and heater all in one: it can provide heating and cooling capabilities by getting energy from outside – whether that be by extracting or producing heat.

Heat pumps are efficient and effective heating and cooling systems. A heat pump, literally, is a device that moves heat energy from one place to another. It can be used to heat or cool homes, office buildings, and large indoor areas.

Heat energy is absorbed from the outside air and pumped through the vents to heat the room. And since the direction can be reversed in a heat pump, heat can be taken from inside air and pumped outside with cool air flowing through the inside.

Heat pumps can be used in all kinds of climates; they work well in all areas, including the hot and humid south, and cold and snowy north. They also work both during summer and winter. The main advantage of these units is their ability to change between heating and cooling quickly and efficiently, thereby saving energy costs all year round.

Different Types of Heat Pumps

Different Types of Heat Pumps

There are several types of heat pump technologies which include ground source (GSHP), air-to-air (ATA), water source (WSHP), geothermal (GHP), air-source heat pumps (ASHP), air-to-air heat pumps (AAHP), and these are used all over the world to provide homes with their heating and cooling.

Heat pumps can be air source or ground source, known as geothermal heat pumps. Air source heat pumps transfers heat between the air outside and the air inside, while ground source transfers between the air inside and the ground outside. There are also ductless models that use individual air handlers to deliver heat into your living space. For our purposes now, we will be focusing on the air source type.

Let’s start exploring all the different types of heat pumps, so you can understand why they are beneficial to you. All kinds of heat pumps serve the same purpose, but function in their own unique ways. There are several categories that all heat pumps fall under:

Ground source or geothermal heat pump

This type of system works by extracting ground water from 10 feet below the surface and pumping it through a closed loop system to remove any heat that it picks up while passing through the pipes before transferring that warmth into another liquid or gas such as antifreeze or glycol that then flows into an indoor coil within the air handler unit.

The liquid is sent back down below ground level, where it absorbs more heat while passing through the closed loop and it is this heat that is then transferred into your home all year round.

Air source or air-to-air heat pump

These systems transfer heat from the air outside of your home, into a carrier liquid (which typically includes antifreeze or glycol), into an indoor coil unit.

This process all occurs within the air handler unit which distributes the heated or cooled air throughout your dwelling all while using only one system to do so.

These units use the outside air as their main source of developing heat. They transfer this cool gathered air through an indoor coil unit, where they condense and remove any humidity from it all before pushing it out into your home all while collecting the warmth from outside and bringing it inside. The warmth is then passed through a compressor all before being sent back outside.

Water source heat pump

These units have all their components contained in a water tank.

A pump circulates the water while a separate accessory converts it from a liquid to a vapor, allowing for better cooling capabilities due to the lowered temperature. Once cooled, the water is all sent back into the tank to be used all over again. This is continuous.

Solar heat pumps

Similar to air and ground source heat pumps, but instead of extracting warmth from outside air or ground, they extract it directly from the sun’s rays.

As with other forms of heating, these systems extract warmth in summer to cool your home and extract warmth in winter to warm your home.

Hybrid heat pumps

Hybrid heat pumps are a mix of both air source and ground source heat pumps. They usually have an outdoor unit which extracts warmth from outside air year-round, passing it indoors via refrigerant coils in the indoor units, just like other types of air source systems.

However, since these systems also have a closed loop system, they can tap into the earth’s thermal energy – just as with traditional ground source heat pumps. This means that depending on your needs, you may switch between using environmental energy (via earth) and extracting warmth from outside air.

What is the Purpose of a Heat Pump?

Heat Pump Purpose

All kinds of heat pumps all have different working principles all which all work to serve the same purpose: to transfer heat from one medium (air, water, earth) to another. However, all function uniquely so all should be looked at separately.

Ground source heat pumps are all built on the principle of tapping into the earth’s thermal energy year-round. They take advantage of our planet’s natural temperature, taking warmth out of ground using refrigerants within a closed loop system and bringing it indoors to warm your home in winter, or cool it down in summer before releasing the temperature-controlled air back into the environment.

The main components for these types of systems include an outdoor unit all which extracts heat from outside air, lowers its temperature and then is transferred inside. Indoor units receive all this extracted heat and pass it through ducts to all rooms that require heating or cooling. Unlike air source heat pumps, ground source systems all do not need an external power supply (all power comes from energy captured).

Air source heat pumps are all built on the principle of tapping into environmental warmth. They all make use of refrigerants within a closed loop system; however, unlike other forms of heat pumps they do not tap directly into earth’s thermal energy but instead extract heat from outside air and release it indoors.

Using modern refrigeration technology, we can easily move heat from one area to another with 100% efficiency without wasting any thermal energy in the process.

Heat pumps function on the same principle: they exploit a basic physical law to move heat from one place to another. The different kinds of heat pumps all use some form of refrigeration cycle, all with slight variations on how this is achieved.

How Does a Heat Pump Work?

An air source heat pump uses two units, one outside and the indoor air handler unit. Each of these units has a coil and a fan which can be used either as a condenser or evaporator, depending on whether you are using it for heating or cooling.

The fan in each is used to move the air over the coil to enable the exchange of heat through ducts and into your home, or outside when cooling. To accomplish this, heat pumps use refrigerant which is controlled by the Compressor, Reversing Valve and Expansion Valve.

The refrigerant is the liquid that cycles through the heat pump absorbing and rejecting heat as it circulates. The Compressor pressurizes the refrigerant and moves it while the Expansion Valve controls and regulates the flow. A reduction of pressure lowers the temperature of the refrigerant while an increase raises it. The Reversing Valve does just what it sounds like and allows for the flow to be reversed, heating or cooling your home.

Heat energy naturally moves to areas of lower pressure and temperature. Heat pumps use this normal physical process to put heat in contact with colder, lower pressure environments so that the heat will transfer. What all heat pumps all have in common is that they are all more efficient than furnaces alone. They transfer heat into your home using less electricity, saving you money on energy bills and ensure that there is no wasted energy, so that what is not used won’t cause damage to anything else.

Heat pumps work best out of all your heating and cooling options to transfer warmth from one place to another and keep your home at a comfy temperature. They can be paired with an electric or gas furnace for supplemental heating during those colder winter months when the climate outside drops below the optimal range needed.

All types of A/C systems typically require more than one unit to function which means purchasing an outside condensing unit along with a compressor for inside so it can minimize humidity levels present in all rooms throughout your dwelling. Heat pumps only need single-unit installation all while transferring all the heat energy from outside into your living space.


Step 1

For cooling, refrigerant is pumped through the expansion valve in the indoor unit and through the coil which is functioning as an evaporator. The fan blows the inside air across the coil and heat energy is absorbed by the refrigerant which heats up and evaporates into a gas. The cool air that remains is pushed through the home’s ductwork.

Step 2

The refrigerant, now in gas form, passes through the compressor which pressurizes and heats the gas, and it moves to the outdoor unit.

Step 3

In cooling mode, the fan in the outdoor unit blows outside air across the coils which are acting as a condenser and the heat from the hot compressed gas is transferred to the outside air. As it cools, the refrigerant returns to a liquid state which is then pumped back to the expansion valve in the indoor unit.

Step 4

The expansion valve reduces the pressure of the warm liquid refrigerant, allowing it to cool significantly, and preparing it to return to the indoor evaporator coil to begin the process again.


For heating your home, rather than cooling, the heat pump works the same way, but in reverse.

Switch your thermostat from cool to heat and the Reversing Valve will change the direction of the refrigerant flow and your system will remove cool air from your home and bring in heat.

All heat pumps work to provide you with an extremely efficient heating platform, one that can function all year round without any interruptions or additional energy sources needed. Heat pumps use electricity, but never have to be refueled.

Heat Pump Advantages

Heat Pump Advantages

  • Lower utility bills (no need to use separate systems like furnaces or air conditioners);
  • Can provide both heating and cooling;
  • Low maintenance;
  • Cools better than conventional ac units;
  • Minimal noise

Heat pumps are excellent at providing you with heating and cooling with comfortable humidity levels, making them more energy efficient than any other form of home comfort all while keeping your home’s interior perfectly.

These benefits make heat pumps ideal for anyone who wants an extremely low-cost operating system all while minimizing their impact on the environment around them. And making them a cleaner and greener option to all other types of heating and cooling units. Find out what each type offers, where you can use each one before deciding which one best fits your needs. Because they use 90% less energy than gas furnaces, heat pumps create a more efficient and cost-effective home while using less energy than other methods.

Heat Pump Disadvantages

Heat Pump Disadvantages

There are very few disadvantages, however, for people living in areas where it is very cold for months on end with snow and ice for several months a year, heat pumps may not be as effective. Once the temperature gets too low, they will not be able to pull heat energy from the air at that point and may encounter problems. This is a situation where you will want to consider a back-up unit. However, geothermal and air source types can both be used very effectively all summer long and for nearly winter temperature.

Average Life Expectancy of a Heat Pump

Average Life Expectancy of a Heat Pump

The simple answer to this depends on the type all heat pump, and how well they’re looked after. Water source heat pumps tend to have a longer life expectancy than air source, solar and geothermal systems due to their more reliable technology.

However, even water source types are not completely maintenance-free, so it is important that you get them serviced regularly according to manufacturer’s guidelines all instructions.

Air source types call for steady airflow which means that filters must be cleaned on a regular basis while shading around solar panels will need some periodic repairs in time. Geothermal systems are the most durable of the bunch but require inspection at intervals set by your dealer or installer while upkeep also depend on how often you use all utilize your system.

Heat pumps can heat and cool spaces of all shapes and sizes depending on the model and type installed in your home. Each system has its own upsides and downsides, depending on what you need them for, where you plan to use them and other factors such as ease of installation, upkeep requirements, and noise level.

Heat pumps can be used safely if they’re installed by qualified professionals, who follow all proper procedures when installing and maintaining them. You should ask yourself whether a given dealer is a member of a trade organization such as Air-Conditioning, Heating, Refrigeration Institute (AHRI) or Cooling Technology Institute (CTI).

If they are, it means that they have passed HABC certification exams all keep all their skills all knowledge up to date all abide by all relevant safety procedures. Heat pumps offer excellent performance all year round at a reasonable price – they use less energy than any other system with similar capacity, so you can save up on your electric bill without having to sacrifice comfort reliability and ensure the safety of your family and pets. They’re also capable of providing very even temperature levels with little fluctuation, which makes them perfect for rooms that suffer from issues like temperature stratification.


All these features make heat pump HVAC systems a great choice for both homeowners and business owners alike, especially those who want to reduce all eliminate possible costs and negative impacts on the environment.

Heat pumps are an affordable way to enjoy comfortable temperatures you need and reduce your monthly power bills substantially. But make sure to choose the right model for your needs and preferences. Do your research thoroughly before committing to any type or brand.

If you stick with known, well-respected manufacturers and work with experienced professionals who know what they’re doing, chances are that the pros completely outweigh the cons when it comes to investing in one of these systems. If you want to go green without spending too much money on heating and cooling technologies that offer low energy usage, look no further than heat pumps.