Air Source Heat Pumps & Installation in Hampshire

Air source Heat Pumps, also referred to as ASHP’s deliver heat at lower temperatures than traditional fuels like gas and oil and operate more efficiently because they extract heat from the air. Throughout winter, a well-designed ASHP system may be used constantly to heat your home efficiently. It works well when combined with both underfloor heating and high surface area, low temperature radiators. ASHPs can be a viable alternative to gas boilers in providing domestic hot water. Depending on the fuel that you will be replacing when having an ASHP installed, you will have a good chance of reducing your carbon footprint.

An air source heat pump system absorbs heat from the outside air and transfers this to a fluid. The fluid then passes through a compressor to increase the temperature so it can provide the heat for heating and hot water requirements within the home. These systems can extract heat from outside temperatures as low as -15o C, however the efficiency of the system will decrease during particularly cold spells of weather. The electricity consumption of a heat pump is affected by the amount the heat pump needs to lift the temperature. If the heat pump only needs to lift the temperature from an outside air temperature of 10°C to 35°C it will work much more efficiently than having to lift from 0°C to 45°C. The SPF (Seasonal Performance Factor) or sometimes called the SCOP (Seasonal Coefficient of Performance) defines how efficiently the heat pump will run on average across all seasons. ASHP’s can either heat air to water or air to air systems.

Air to water systems pass heat to any wet central heating system, and because the ASHP runs at a lower temperature than traditional boilers, these deliver energy saving efficiencies. These systems are great when heating underfloor systems and larger radiators which produce lower temperatures and work over a longer period of time. Air to air systems work in a simplified way, in which warm air is circulated by fans to heat your home, these systems do not normally provide hot water. We have detailed below the information you will need when considering the installation of your new Air Source Heat Pump system. Please take time to read our proposal carefully and should you have any questions, please don’t hesitate to ask, we’re only a phone call away.

There has never been a better time to invest in a heat pump. The government’s Warm Homes Plan, published in January 2026, is the biggest public investment in home upgrades in British history, and heat pumps sit right at the heart of it. Here is a plain-English breakdown of every scheme available to Hampshire homeowners right now.

The Boiler Upgrade Scheme (BUS)

The Boiler Upgrade Scheme is the primary grant available to homeowners replacing a fossil fuel boiler with a heat pump. It is administered by Ofgem on behalf of the Department for Energy Security and Net Zero (DESNZ), and it is entirely grant-funded, not a loan, not repayable, and not means-tested.

Current grant amounts:

The scheme provides £7,500 towards the cost of an air source heat pump (ASHP) or ground source heat pump (GSHP) installation, or £5,000 towards the cost of a biomass boiler. For the first time, air-to-air heat pumps are now also included in the scheme, with a £2,500 grant available for eligible installations.

Who qualifies:

You must own your property, which must be a home or small non-domestic building in England or Wales. Your current heating system must be fossil fuel based, such as gas, oil, LPG or coal. New build properties are not eligible.

A valid EPC issued within the last 10 years is required, but loft or cavity wall insulation is no longer mandatory, though installers may recommend upgrades to maximise efficiency.

How it works:

The scheme is entirely installer-led. Homeowners cannot apply directly. All applications must be submitted by an MCS-certified installer on your behalf, with the value of the grant deducted from your final bill. As SolarPowerful are MCS-certified, we manage the entire process for you from application through to installation.

Funding and timeline:

The government has confirmed a budget of £295 million for the 2025/2026 financial year. The scheme runs until 2028 as part of the Warm Homes Plan. With record application numbers being processed, we recommend acting sooner rather than later to secure your voucher.