Air source heat pump installation in Essex and beyond

Air Source Heat Pumps are the future of residential heating, offering renewable, low-cost heating for UK Homes. With government incentives available, air source heat pump installation is more affordable and accessible than ever. We are qualified and reputable air source heat pump installers in Essex, however, we install all over the UK.

Receive up to £11,500 tax free in Renewable Heat Incentive payments

Use electricity to heat your home rather than gas or oil

Use solar and batteries to supply electricity to the air source heat pump for even cheaper running costs

Reduce your carbon contribution drastically

A rise in air source heat pump installation

We have seen an enormous uptake in air source heat pump installations in the last year mainly due to the well received Renewable Heat Incentive. This incentive was due to finish April 2021 and was extended for 12 months.

If you’re considering an air source heat pump, there has never been a better time to capitalise on the generous Renewable Heat Incentive currently available. Get in touch with our air source heat pump installers in Essex today.

Our Process


Initial Consultation

Get in touch with a member of the team and one of our renewable energy experts will discuss your enquiry in more detail. 


Arrange Heat Loss Survey

Your account manager will arrange for a heat loss survey to be completed. An independent and accredited surveyor takes a variety of measurements which helps specify equipment and necessary works.


Receive Your Quote and Proposal

Once we have received the survey data, we provide a quote for the installation, RHI payment projections and all the new system information. Digest everything in your own time without any pressure.


Pre-installation Survey

Our in house leading heat pump engineer will come to the property to discuss heat pump location, assess pipe routes and ensure the installation goes smoothly start to finish.


Heat Your Home and Receive Your RHI Payments

Heat your home with your low energy heat pump, start saving and begin receiving up to £12,000 tax free in RHI payments.



At K Cahill Renewables we pride ourselves on thorough pre-sales care as well as our after-sales care. If there are any matters that require our assistance, we're a phone call or email away.


Heat Pumps we’ve installed at properties across the UK

Air Source Heat Pump Installation

Frequently Asked Questions

How does an air source heat pump work?

An air source heat pump works much like a fridge, only it’s in reverse so it heats your home. Outside air is blown over a network of tubes filled with a refrigerant. This warms up the refrigerant and it turns from a liquid into a gas. The refrigerant transfers its heat to water, making it warm. This warm water is sent around your radiators or underfloor heating just like a conventional gas or oil system would, heating your home.

How much does air source heat pump installation cost?

The cost of heat pump installation depends on a number of factors. For a typical UK 3 bedroom house built in the last 60 years, the cost of the heat pump ranges from £1,500 to £3,000. The remainder of the cost is for installation as well as other factors such as home insulation. Installation costs can vary depending on accessibility, the size of the house, the existing plumbing and your location. It’s best to get in touch with our heat pump engineers to discuss pricing in more detail.

Is an air source heat pump reliable?

Air source heat pumps normally have a life span of 20 years or more if they’re well looked after and serviced regularly, making the heat pump an excellent choice for a long term heating option for the home. As they’re designed to process air rather than a physical substance such as fuel or water, a heat pump can be more reliable than boilers and oil heaters.

Are ASHPs difficult to maintain?

Once installed, an air source heat pump is very easy to maintain, however, it will need attention on a regular basis. Seasonal checks between 2 to 4 months are recommended in order to prolong the life of the heat pump, get ahead of any issue and maintain the heating efficiency of the unit.

Can I get money off of the installation of an air source heat pump?

There is a UK Government finance scheme accessible called “The renewable Heat Incentive’’ (RHI) in which owners of air source heat pumps can actually earn money for 7 years for green electricity supplied back to the grid. As long as you meet the criteria for the size of the heat pump at your home (and other factors), your heat pump may pay for itself after a number of years! 

A government grant of £5000 is applicable for eligible homes from April 2022. We’re yet to find out the exact details of the grant, but get in touch with us today and discuss whether you can qualify for the boiler replacement grant and save £5,000 towards the cost of your air source heat pump installation.

Are you ready to start your project?

At Cahill Renewables, we make it easy for you to find the perfect system to manage your energy better and reduce your bills. Whether you are looking for advice and guidance from an expert, or just want to understand the different systems available, we are here to help. Speak with one of our trained engineers today.

We would love to hear from you!

Colchester CO2 8JX

We are based in the heart of Essex.

Got a question? Drop us a line!