Benefit from the Renewable Heat Incentive with an air source heat pump

You'll be paid for every calculated kWh of an air source heat pump over 7 years.

Register with HomeSun

We’re government approved:

Applying is easy

Step 1
Complete a quick online form and we’ll set up a call with you

Step 2
Book a Virtual Survey
From this, we’ll be able to provide you with a detailed quote

Step 3
MCS survey 

Once you decide to go ahead, we’ll do a final survey

Step 4

We’ll install your new heating system that’s better for the environment

TV Presenter and Celebrity Architect, George Clarke introduces Mitsubishi’s Ecodan, one of HomeSun’s favourite air source heat pumps.

Why Air Source Heat Pumps?

Air source pumps are an alternative way to heat your home  – replacing your gas or oil based system, for example.  They work like a ‘ fridge in reverse’, extracting free heat from the outside air, raising the temperature with a compressor and using that to heat water for a water tank and central heating system. Air source heat pumps can still extract heat when air temperatures are as low as -25°C.  The pump runs on electricity. Every 1kW of electricity produces 3kW of heat output which makes them a highly energy efficient way to  heat your home

Save money and carbon emissions, and claim up to £10,000 now for the Government Grant of a Green Homes Voucher.

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Potential annual energy savings

Installing a standard Air Source Heat Pump in an average sized 4 bedroom detached home:


gas system


OldG-rated oil


Old electric


OldG-rated LPG

  • Heats your home and water

  • Slashes fuel bills

  • Cuts your carbon footprint

  • No more fuel deliveries

  • Use your FREE Green Home Grant voucher

Apply Now

The Renewable Heat Incentive

Any homeowner in England can claim the Renewable Heat Incentive (RHI). The RHI is a UK Government Scheme which gives a payment for every calculated kWh of an air source heat pump and it is paid out (tax free) over 7 years. The current rate for the RHI is 10.85p per kWh.


HomeSun is proud to be an accredited installer

For the average UK household, heating accounts for more carbon emissions than any other aspect of life. Yet it is possible easily to cut these emissions dramatically – as well as your associated energy bills – by replacing a gas, oil, LPG, or solid fuel heating system with a brilliantly efficient air source heat pump.
This is also in line with the Government’s objective to reduce the UK’s ‘carbon footprint’ and tackle climate change.

air source heat pump

HomeSun installs Mitsubishi Ecodan

  • Quiet and continues to operate well with low outdoor temperatures
  • Systems suitable for a small flat as well as a large detached house
  • Offers energy monitoring as standard
  • Live monitoring of Ecodan heat pumps from all over the UK, means that you can see how heat pumps perform in the real world, 24hrs a day, 365 days a year
Sign up here

Insulated hot water cylinder.

Air source heat pumps are installed with an insulated hot water cylinder. The uniTOWER, for example,  can easily provide sufficient hot water for the needs of a family of five, including the use of rain showers.

I'd like one of these!
Hot water cylinder
air source heat pump

HomeSun installs Vaillant aroTHERM plus

  • Very quiet operation with the Sound Safe System 
  • Flow temperature of  75°C
  • Uses a refrigerant which has a low global warming potential
  • Can be combined with photovoltaic or solar heating systems
  • Has seen up to a 43% saving when replacing oil or LPG heaters
I'm ready to go green!

Efficiently heat your home

An air source heat pump is a highly efficient way to heat your home and hot water.

I want to save money!

Your questions answered

How do Air Source Heat Pumps work?

An air source heat pump works a bit like a fridge in reverse. There is an evaporator, a compressor and a condenser in the unit. The ASHP takes the free heat from the outside air which causes the refrigerant to evaporate (there’s enough heat even in winter to do this). Electricity drives a compressor that compresses the refrigerant and causes it to heat up. This heat is then transferred via a heat exchanger to central heating and hot water circuits. The cooler refrigerant now condenses back into a liquid and starts the cycle again.

Is an Air Source Heat Pump right for my home?

An air source heat pump requires little maintenance, is super efficient and easy to install. They are perfect for homes heated with older gas boilers, oil or electricity – because the cost (and carbon emissions) savings are so significant. Give us a call or fill in our online form, and we’ll have a proper look at your home and what could be right for it.

How much will I need to spend?

The answer is ‘it depends’ but it could be free!

The cost of an air source heat pump and its installation is down to a number of factors including the size of your home, the manufacturer of the system, and your existing radiators and pipes. If you are eligible for a £10,000 voucher, that could cover all of the costs of the works.

How big is an air source heat pump?

It will depend on your home and the size of the system you need.  Once we have done the calculations, we’ll let you know what to expect. As a ‘starter for ten’, think of a standard air conditioning unit.

Will I save money?

Yes, you should save money. The amount you will save depends on what type of heating you have now, you home and lifestyle. If you have an old LPG system, you could save £1300 each year – huge. When we do a full technical survey, we calculate costs and savings – so you’d never be going ahead with something without having proper information.