Heat Pump

Air Source heat Pumps are a very realistic alternative to the conventional fossil-fuelled heating system and does not require any digging or underground pipe work. ASHPs use basic thermodynamic principles to convert latent heat, contained within the ambient air, into heat energy that can be used to provide heating and hot water. This system can be classified as a renewable energy source because the heat in the air is replenished by the sun.

There are two types of ASHP   "Air to air" and "air to water".

Air to water heat pumps release the energy into a water circuit which is then used in a wet heating system such as radiators or under floor.

Air to air pumps release the captured energy through an air heat exchanger, which is then forced, by fan, around the dwelling through trunking or directly into the room.

Air source heat pumps are between three and four times more efficient than a modern gas boiler. Once operating, you can expect to reduce your fuel bills by 30% to 60%.

Renewable Heat Premium Payment? 

The RHIwill pay a fixed amount per year to those who opt to change from heating systems operated by fossil fuels to renewable options The RHIpays participants of the scheme that generate and use renewable energy to heat their buildings. By increasing the generation of heat from renewable energy sources (instead of fossil fuels), the RHIhelps the UK reduce greenhouse gas emissions and meet targets for reducing the effects of climate change.


There are two parts to the RHI:

  • Domestic RHI– launched 9 April 2014and open to homeowners, private landlords, social landlords and self-builders
  • Non-domestic RHI– launched in November 2011 to provide payments to industry, businesses and public sector organisations

How will it work?

The payments made will either be made on the exact amount of heat produced or on the amount it is anticipated the installation will provide. The former means you’ll need to have a meter fitted to your system, in the same way as gas and electricity is metered, to account for the heat produced while the latter is paid on an estimate.

And unlike the Feed-in Tariffs which limits payments to installations with a maximum of 5MW, the RHI will apply to heat installations of any size.

The Government has confirmed that payments will be made on a quarterly basis over seven years. The following tariff rates for the domestic RHIapply:

Solar thermal panels (flat plate and evacuated tube)


Ground source heat pumps


Biomass boilers and biomass pellet stoves with a back boiler


Air source heat pumps (air-to-water)


Households with biomass boilers and heat pumps who install a metering and monitoring package will also receive additional payments per annum of £200 and £230 respectively.

To be eligible for RHIpayments you will be required to have a Green Deal assessment and where appropriate have cavity wall insulation and a loft insulated to a minimum of 250mm. If you have a biomass system the installation will need to adhere to fuel sustainability and air quality requirements. 





If you are considering a installation contact Space Renewable Energy Ltd  on 02392 341835 or use the following link to find out  more about the Renewable Heating Incentive, The Home Energy Assessment or further details about the Green Deal.