Exhaust Air Heat Pumps (EAHP)

What are Exhaust Air Units?

An exhaust air heat pump (EAHP) is a very clever bit of kit.

First it brings fresh air into your home and expels the stale waste air, giving you good ventilation. The clever bit is that it catches that warm air from your kitchen and bathrooms before it leaves the building and uses it to provide all your heating and hot water.

It does that by using ducting hidden in the ceiling that draws that warm air through the heat pump, taking out the energy before expelling it outside. This process allows the heat pump to supply the entire house with hot water and heat. A great addition to your heating system.

The diagram below shows how it works and the benefits. We are very proud to be able to offer this installation and know how big a difference it makes to buildings.

The EAHP is basically a small heat pump sitting on a hot water cylinder. They are packaged in a tall slim unit, the size of a fridge-freezer, meaning they are ideal for modern, well insulated flats and homes with underfloor heating (UFH) but little space.

Why Use Air Heat Pumps?

They are part of a broader category of heat recovery systems, which are designed to improve the energy efficiency and running costs of modern homes. By using a ducting system to extract heat from the indoor air, these pumps ensure that no valuable energy is wasted.

This process not only provides a consistent supply of hot water and heating but also contributes to lower energy bills, making it an economical choice for homeowners.

Furthermore, the integration of such energy-efficient systems into your home can significantly enhance its overall environmental performance. By capturing and reusing heat that would otherwise be lost, an exhaust air heat pump optimises energy use and reduces the overall carbon footprint of the household.

We have recently finished a project in Essex where we fitted 15 new build flats with individual exhaust air heat pumps. Click the link to see this fantastic project.

Advantages of Air Heat Pumps

• They are cheaper to run than fossil fuel boilers.
• They reduce your carbon footprint by creating less CO2 emissions.
• They prevent condensation in your home.
• They are an all-in-one system that provides heating, ventilation, and hot water.
• They keep your house ventilated – increasingly important in well insulated homes – which improves air quality.
• They are very quiet and require minimal maintenance.
• They run on electricity and are therefore safer than fossil fuel boilers burning fuel.

An exhaust heat pump can provide about 5 kilowatts (KW) of energy which means that they are mainly used for new flats and small homes that have good insulation and underfloor heating.

If you are a builder, developer or architect working on new housing scheme and looking for a simple alternative to gas boilers do get in touch and we’d be happy to discuss installation for your green energy project.

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