Reduce your carbon footprint and energy bills with an air source system

We first launched our Lewington Renewable division in 2000, since then the installation of air source heat pumps has become our speciality. We specialise in all the leading brands including Mitsubishi EcoDan, Grant Aerona & Worcester Bosch; in fact, we won a Worcester Bosch Environment award for our renewable installation in 2020. Our renewable offering allows you to reduce your energy bills while protecting the environment, it’s a win-win!

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“We’re really proud to be endorsed by Which as being a Trusted Trader. To become one of only a select few within our area is testament to our commitment to providing a friendly, efficient, and cost-effective service to the homes within the Leicestershire area.”


Air source systems capture heat from the outside air to heat your homes. Even on chilly winter nights, there is still heat in the air that can be captured by air source systems. In fact, they work in temperatures as low as -15°C!

Using the air that surrounds us to heat your home significantly lowers your fuel bills, whilst also reducing your carbon footprint.

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Air source heat pumps draw energy from the air into your home, saving you money and helping the environment!


Air source heat pumps (ASHPs) use the air from the outside to heat your home and water. They are installed outside of your home (usually attached to exterior walls) and use a fan to draw in air which is compressed to create heat.

Using a renewable source and a heat pump can reduce your heating costs by up to 65%. The exact figure will depend on where you live, the size of your house and the fuel you are replacing. Heat pumps can halve your home’s carbon emissions as there is no combustion process involved, which is much kinder to the environment.


Air source heat pumps work by harnessing latent energy from the air to boil a refrigarant which is then compressed to generate heat which is used for heating and hot water.

The only input required is a small amount of electricity to run the Air source heat pump. For each 1kw of electricity required, the air source system produces 4kw of heat!


There are many benefits to installing air source heat pumps, these include:

  • A reduction to your fuel bills, particularly if you are replacing an electric heating system
  • Heating both your home and your water from one source
  • Lowered carbon footprint due to renewable technology
  • Few maintenance requirements
  • Potential reimbursements from the Government RHI scheme
  • They are easy to install, as they do not require invasive landscaping


In 2014, the UK government began their Renewable Heat Incentive (RHI) scheme. This entitles those who have certain renewable systems to seven years of quarterly cash payments for their investment in sustainable practices. Air source heat pumps are eligible for the scheme, meaning that our customers could receive income for their investment! You can also pay VAT at the reduced rate of 5% on certain RHI-qualifying technologies. Find out if you are eligible for RHI scheme, and contact us about a cost effective ASHP installation today.


The UK Government offers a variety of grants and financial incentives to encourage UK homes to swap to renewable heating systems.
Learn about the most recent and upcoming grants available on our funding page.

Learn more

Delivering the best results everytime

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To get an estimate of how much it will cost to install your renewable energy source, use our quick quote tool. Alternatively, use our contact form to drop us a message we’ll get back to you within 48 hours.

    Customer FAQs

    First and foremost, you need to have a well-insulated house, due to the low running temperatures of an heat pump you need to be able to retain the heat in the property.

    Find out more here https://www.lewington-heating.co.uk/is-a-heat-pump-right-for-me

    A heat pump will typically deliver a flow temperature of 40 – 45 degrees so your existing rooms will need to be able to cope with the lower radiator surface temperature. If not, you may be advised to increase the size of the radiator or look at alternative fan assisted radiators.

    Yes, heat pumps are perfect for underfloor heating as it works hand in hand with the heat pump temperature of 40 – 45 degrees.

    No, the typical noise from the outdoor unit is similar to a fridge working.

    Yes, all heat pumps will require a hot water cylinder and suitable space around to conceal all the equipment.

    There is currently the RHI scheme which is due to finish at the end of March 2022. This is being replaced with a one-off payment of £5000 from the government towards replacing your existing boiler for a heat pump. https://www.lewington-heating.co.uk/funding


    We operate Monday – Friday from 8.00am – 5.00pm. Should you wish to contact us out of hours, click here or you can leave a voice mail on 01858 433333.

    Yes, we have specialist engineers who can install and service hot water solar thermal systems.

    Yes, we appreciate that many people also work in the daytimes, so we carry out our on-site quotations in the evenings or on Saturdays to suit you.

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