Air Source Heat Pumps: Everything About Them!

Air source heat pumps (ASHPs) are an increasingly popular form of energy-efficient and renewable heating for homes, businesses, and other buildings. By extracting energy from the air outside, ASHPs provide a reliable, cost-effective way to heat buildings while reducing carbon emissions. In this blog post, we’ll look at the basics of ASHP and all that you should know about it!

What is an Air Source Heat Pump?

An air source heat pump (ASHP) is a device that transfers heat from the outside air to heat your home. ASHPs are powered by electricity. But, they use far less energy than electric resistance heating systems such as furnaces and baseboard heaters. In fact, air-source heat pumps can provide the same amount of heating with one-third to one-half the amount of electricity.

While an ASHP can work in any climate, they tend to be most efficient in moderate climates where the temperature difference between the inside and outside air is not extreme. An ASHP will operate less efficiently in cold weather because it must work harder to transfer heat from the cold air outside to the warm air inside your home.

Air-source heat pumps are a great choice for homeowners who want to reduce their energy usage. Also, to save money on their heating bills. ASHPs are also a good option for those who want to reduce their environmental impact. Mainly because they use far less energy than traditional heating systems.

air source heat pumps model
ESP Energy

How Does an Air Source Heat Pump Work?

As with a refrigerator or air conditioner, an ASHP moves heat from one side to the other. In heating mode, an ASHP extracts heat from the outside air and transfers it indoors; in cooling mode, it reverses this process and expels heat from the interior to the exterior.

ASHPs are most commonly used for heating purposes but can also be used to provide cooling and hot water. When used for heating, ASHPs typically have a coefficient of performance (COP) of around 3-4. This means that for every unit of energy consumed by the ASHP, 3-4 units of energy are provided to the interior space. In cooling mode, the COP is typically around 1.5-2.0 due to the higher temperatures required to expel heat outdoors.

When used for domestic hot water production, ASHPs can have a COP of up to 6.0 due to the relatively warm temperature of outgoing water compared to incoming water.

In order to transfer heat effectively, ASHPs require a source of electricity. The amount of electricity required depends on various factors such as climate, desired temperature change, and unit efficiency. Generally speaking, however, ASHPs are much more efficient than traditional heating and cooling systems.

The Benefits

Air source heat pumps are a type of renewable energy technology that can be used to heat and cool homes and buildings. Heat pumps work by transferring heat from one place to another. So as that, they can be used to extract heat from the air, ground, or water. Air source heat pumps are particularly efficient in cooler climates. They can extract heat from the air even when the temperature outside is below freezing.

There are many benefits to using air-source heat pumps, including the following:

1. Reduced carbon footprint. Air source heat pumps do not emit greenhouse gases or other pollutants, making them a more environmentally friendly choice than traditional heating and cooling systems.

2. Lower energy bills. Heat pumps are very efficient and can help save money on your energy bills.

3. Increased home value. Homes with air-source heat pumps may be valued higher than homes without them, as they are more energy-efficient and sustainable.

4. Government incentives. In some countries, government incentives may be available for installing an air source heat pumps, such as tax breaks or subsidies.

The Disadvantages

There are several disadvantages of air source heat pumps to consider before installation. One is the noise level; an air source heat pump can be quite noisy, especially when it first starts up. Additionally, ASHPs are less effective in cold weather and may require a backup heating system. They also require more maintenance than other heating systems and may not be as durable as other options.

How to Choose the Right Air Source Heat Pump

When considering an air source heat pump (ASHP) for your home, there are several things to consider to ensure you make the best decision for your needs. Here are a few tips on how to choose the right ASHP for your home:

1. The first thing to consider is the climate you live in. If you live in an area with very cold winters, you’ll want an ASHP specifically designed for cold weather operations. Some ASHPs can lose efficiency in freezing temperatures, so choosing one that will work well in your climate is important.

2. Another important consideration is the size of your home. You’ll need to know the square footage of your home to determine the proper size ASHP for your needs. Generally, a larger home will require a more powerful ASHP unit.

3. Once you’ve determined the specific model and size of ASHP that you need, be sure to get quotes from multiple contractors before making a final decision. Installation costs can vary significantly, so comparing prices is important before purchasing.

4. When having an ASHP installed in your home, be sure to ask about any government incentives or rebates that could help offset the installation cost. In some cases, these incentives can make ASHPs much more affordable.

how to choose the right air source heat pump


Air source heat pumps are an excellent way to heat and cool your home while saving energy. They are more efficient than traditional heating systems, require less maintenance, and can save money on energy bills. With their ability to provide both heating and cooling in one system, air-source heat pumps are a great choice for almost any homeowner looking to improve the comfort of their home.

Also read: Home Improvement: Do It Yourself!

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