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Air Source Heat Pumps

Go Green

ASHP’s reduce your carbon footprint, and contribute to a greener and more sustainable future.

0% VAT To Pay

The whole installation including your new hot water cylinder, radiators, and underfloor heating are 0% VAT

£7,500 grant

We handle all of the grant paperwork and claim the grant on your behalf.

Free Surveys

We offer FREE room by room heat loss surveys and check your current radiators for suitability.

How does the process work?

Free home survey

We understand the dilemma consumers face when trying to obtain multiple quotes for heat pumps. Therefore, to ease this process, we offer FREE room-by-room heat loss surveys. This allows you to receive an accurate quote for your installation, including any radiators that may need upgrading.

Once we have confirmed the initial suitability for a heat pump, we can then proceed directly with the room-by-room heat loss calculations. While this can take a bit of time, it is necessary to ensure we gather all the essential information.

However, we only offer this service to single domestic dwellings within our service area, and the calculation data will only be shared if you decide to proceed with our quotation.

Quotation

Once we have worked out all the technical details, we will then send over an initial proposal for the work. This comprehensive proposal will detail any radiators that need upgrading, the make, model, and output of the selected heat pump, as well as the flow temperature and the Seasonal Coefficient of Performance (SCOP) of the heat pump. Additionally, the proposal will include a system performance estimate to give you a clear understanding of how your new heating system will function.

We can also amend certain technical details, such as flow temperatures, to better suit your needs. For example, by adjusting the flow temperatures, your SCOP may increase, leading to a more efficient heating system. However, please keep in mind that some radiators might need modification or replacement to achieve these efficiency gains. Throughout this process, we are committed to working closely with you to ensure that your heating system is optimised for both performance and efficiency.

Installation

Once you are satisfied with the quotation, we will send over the contract documents for your review and signature. Our team will guide you through the contract details, ensuring everything is clear and addressing any questions you may have. After you sign the contract, we will work with you to agree on an installation date that fits your schedule.

Next, our expert team, composed of certified technicians and experienced installers, will handle the entire installation process for your heat pump and its components. We will manage all aspects, including setting up the indoor and outdoor units, as well as the necessary piping, electrical connections, and integration with your existing heating system.

After the installation is complete, our commitment to you continues with comprehensive support. This includes regular servicing to maintain the optimal performance of your heat pump. Additionally, our team is always available to address any technical issues or questions that may arise.

Ultimately, our goal is to ensure your complete satisfaction and comfort with your new heating system.

Air Source Heat Pump FAQ’s

Homeowners no longer have to install cavity wall or loft insulation to use the boiler upgrade scheme, which offers grants of £7,500 off the cost of heat pump installation.
The indoor equipment such as hot water cylinder, buffer vessel, and control panel will need a cupboard height of at least 2 meters, and the cupboard floor area should be a minimum of 0.8 meters x 0.8 meters.
Not necessarily, we will check each radiator and advise accordingly on if it will suit the system. You may be surprised to know that a lot of radiators are considerably oversized so can run at the lower temperature.
Yes, we install radiators and underfloor heating. We can install low profile retro-fit underfloor heating from as little as 20mm high.
In England, most air source heat pump installations are considered permitted developments and generally do not require planning permission. However, placing the heat pump within 1 meter of the property’s boundary, potential noise issues to neighbouring properties, having multiple air source heat pumps or air conditioning units, or if your property is located in a World Heritage Site, conservation area, or is a Listed Building could mean planning is needed.
We can do an online search to check if you have a valid EPC. If not, no worries, we can arrange for this on your behalf from £75.
Yes, Heat pumps are designed to operate in a wide range of temperatures, and modern units can work efficiently in temperatures as low as -20°C (-4°F) or even lower, depending on the model.
Generally, after the BUS grant the consumer would end up paying between £2500 – £7500 but there are a large number of factors that come in to play. Contact us today for a free quote!

SCOP stands for Seasonal Coefficient of Performance, and it’s a metric used to measure the energy efficiency of a heat pump over a heating season. SCOP is calculated by dividing the total amount of heat delivered by the total amount of energy consumed over the same period.

What SCOP do I need to be cheaper than a gas boiler?

Due to the constant change in energy prices and Tariffs this is difficult to pin down exactly, however we see that SCOP’s of 3.3 will generally match or beat most gas boilers. We aim to go beyond this if possible.

All residential installations, including radiator upgrades and any other items related to the installation of your air source heat pump, qualify for zero VAT. You can find more information on the GOV.UK website under Energy-saving materials and heating equipment (VAT Notice 708/6).
We apply and claim for the BUS grant on your behalf and deduct the value from your invoice.
Your self-build property is eligible if you are building it yourself or you paid a builder to construct it, and it has never been owned by a business or organisation.
A typical an air source heat pump installation takes around 5 days to install and commission.
Yes, sometimes installing a buffer vessel on the system is necessary so that you won’t have to worry about upgrading your pipework. 
Yes, air source heat pumps (ASHPs) and unvented hot water cylinders need annual servicing to ensure they operate safely, efficiently, and reliably. Regular servicing can extend the lifespan of the heat pump, improve its performance, and prevent potential issues.
Manufacturers require annual servicing as a condition of their warranty. Failure to service the heat pump could void the warranty.
Rest assured that Cambs Heating can service your heat pump and cylinder when the time comes.
You will receive a system performance estimate detailing your estimated running costs with your quotation. If you can provide us with your current energy usage we can use this data to give you a realistic annual running cost. We generally strive to achieve higher SCOP’s to ensure you make a saving on your bills.
We install all brands of air source heat pumps such as Vaillant, Samsung, Mitsubishi and Daikin.

R290 is the preferred gas to use in a heat pump or air conditioning units due to it having a lower GWP (Global Warming Potential). R290 is pure propane so has limitations on where it can be installed. You cannot install these units too close to air bricks or other openings in the building fabric such as windows. R290 units can often reach flow temperatures of 75C.

R32 has a higher GWP (although still much lower than most other refrigerants). These units are much more flexible on the installation location due to R32 being classed as only mildly flammable. R32 units often reach flow temperatures of 65C.

Efficiency – System design is the most important thing here, both refrigerants can obtain similar SCOP’s, the main factors for choosing which to go for would be the installation location, the maximum flow temperature required, and the consideration for GWP.