Benefit from the Renewable Heat Incentive

Switch to an air source heat pump and receive 7 years of tax free payments

Switching to a heat pump is easier than you think

Step 1
Give us a few details and we’ll be able to discuss the pros and cons of a heat pump for your home

Step 2
Virtual Survey
We ‘ll do a virtual or in-person survey to provide you with a quote and RHI earnings estimate

Step 3
MCS survey 

Once you decide to go ahead, we’ll do a final detailed design and thermal calculations

Step 4

We’ll install your new efficient, renewable, climate-friendlier heating system

Why Air Source Heat Pumps Now?

There’s now a ban on installing natural gas boilers and other forms of fossil fuels in new homes from 2025. We can only expect increasing change for all homes. So, if you a switch to renewable power is inevitable, better to make the change early, when there are Government financial incentives to help.

All UK homeowners who install an air source heat pump in 2021 can claim the Renewable Heat Incentive (RHI). You will receive a quarterly tax free payment for every kilowatt hour (kWh) of renewable heat you produce. You  get these payments for seven years.

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.

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

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

  • Receive tax-free payments

The Renewable Heat Incentive

With the RHI, the Government is effectively paying you to install an air source heat pump.

The payment is for every calculated kWh of renewable heat produced and it is paid out, tax free, over 7 years. The current rate for the RHI is 10.85p per kWh.

This payment is in addition to savings achieved by switching from a fossil fuel to a renewable energy source.


Smart to go Low Carbon

The UK Government has a legally binding net zero emissions target. Since the heating of property accounts for 20% of emissions, it is not surprising to see the Government ban on fossil fuel heating for new property.

The question is what happens next for the millions of older, inefficient boilers which homeowners were just going to replace for a newer version of the same system?

Is it smarter to review options early, cut a home’s emissions – as well as associated energy bills – by replacing a gas, oil, LPG, or solid fuel heating system with a efficient air source heat pump?

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

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.

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

Efficiently heat your home

HomeSun only installs equipment from leading manufacturers like Vaillant, Mitsubishi and LG.  And any system comes with a new fully insulated water tank. It is a highly efficient way to heat your home and water.


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?

This will depend on the size of your home  but we will be able to estimate costs once we have discussed your requirements and reviewed your EPC. We will also be able to give you a sense of the RHI you will receive.

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.