Air Source Heat Pumps

Your Local Renewables Company

air source heat pump system

Evergreen are experienced installers of Air Source Heat Pumps across Dorset, Devon and Somerset, enabling you to heat your home in an environmentally friendly way and qualify for the BUS Boiler Upgrade Scheme which runs until 2028.

Evergreen have a great team of qualified, experienced and product trained engineers. We have been installing renewable technologies throughout Dorset, Devon and Somerset since 2011.

Evergreen are accredited installers of the Mitsubishi Ecodan Ultra Quiet Air Source Heat Pumps and cylinders. We are a Mitsubishi Ecodan Business Solutions Partner.

As an Ecodan Business Solutions Partner endorsed by Mitsubishi Electric, customers are assured of a high standard of service and installation, and excellent pre and after sales support.

For additional information about the Mitsubishi Ecodan, please visit the Mitsubishi Electric website for homeowners.

Visit the Mitsubishi Ecodan page

With an Air Source Heat Pump
you could benefit from:


Cut your energy bills and
CO2 emissions


£450M of Government investment until 2028


Low noise levels to meet planning regulations


Heat pumps will become one of the main sources of heating

How an Air Source
Heat Pump Works

An air source heat pump extracts heat from the outside air in the same way that a fridge extracts heat from inside itself. Heat can be taken from the air at temperatures as low as -20° C. This can then be used to heat homes via radiators or Under Floor Heating systems and satisfy hot water requirements. Heat pumps have some impact on the environment as they need electricity to run, but the heat they extract from the ground, air, or water is constantly being renewed naturally. Source: Energy Saving Trust

Evergreen are accredited installers of the Mitsubishi Ecodan Ultra Quiet Air Source Heat Pumps and cylinders. We are also members of their Business Solutions Partner program which ensures we and our customers receive excellent pre and after sales support.

air source heat pump diagram

Get Paid for Going Green

The Boiler Upgrade Scheme (BUS) launched in Spring 2022 to aid the decarbonisation of buildings. It provides upfront capital grants to support the installation of heat pumps. We are registered installers under this scheme. You and your property must meet all the eligibility criteria and there are a limited number of vouchers per year. We will do our best to secure any funding available.

Advantages of ASHPs

Reduced energy bills and CO2 emissions

Minimal maintenance required

No fuel deliveries required

Easy to install

Heat your home in an environmentally friendly way

Cost effective

air source heat pump on patio

Where to Start

Location of the Main System Components

The heat pump or outdoor unit is usually located close to the building, with the back of the machine close to an external wall of your property. It can be positioned away from the building, but this will require more materials and labour. A firm level surface is required for the heat pump to sit on. Evergreen will advise on the most suitable position for the hot water cylinder, which will usually be an unvented or pressurised unit. The controller or main wiring centre is the 'brains' of the system and this will need to be located in a sensible position, preferably close to the cylinder.

Get started

We are MCS Certified

MCS is a mark of quality. Using an MCS certified installer ensures that equipment meets good standards of performance and that installers are technically safe and competent. MCS certified Installers have undergone a rigorous vetting process to demonstrate that they adhere to MCS Standards.

...they were taking the problem personally and wouldn't be satisfied
until it was fixed

"I wanted to say that I am extremely happy with the new heat pump and the system in general. You have no idea how good it feels to have enough heat to stop Mum constantly saying how cold she is!

Further to that all the engineers that visited were extremely professional, friendly (with a bit of banter) honest and very clear about what they were doing and how things should be done. They always left the site as tidy as was practical. They were able to answer all my questions and I am very happy with the work.

I was particularly happy with the way your guys went about sorting out the existing problem with blocked pipes, it felt like they were taking the problem personally and wouldn’t be satisfied until it was fixed. 

Information and enquiries have always been answered completely and quickly by the office team, which make me feel confident and secure. So once again, thankyou.

I will be recommending your company to anyone who asks, and I have a feeling that there may well be enquiries as people in the village are interested. It looks like the running costs are a great deal lower than any previous system."

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