What is an Air Source Heat Pump?
An air source heat pump, sometimes referred to as an air-to-water source heat pump, transfers heat from the outside air to water, which heats your rooms via radiators or underfloor heating. It can also heat water stored in a hot water cylinder for your hot taps, showers and baths.
Heat from the air is absorbed into a fluid. This fluid then passes through a heat exchanger into the heat pump, which raises the temperature and then transfers that heat to water.

Government Funding for Heat Pumps
Boiler Upgrade Scheme
The Boiler Upgrade Scheme is a government incentive that will assist with the upfront cost of upgrading your heating system with one of our air to water and ground source heat pumps.
In addition, there is now no VAT on heat pumps – reducing the cost even further.
Boiler Upgrade Scheme
- £5,000 off the cost and installation of an air source heat pump
- £5,000 off the cost and installation of a biomass boiler
- £6,000 off the cost and installation of a ground source heat pump
7001iW Outdoor Unit and Indoor Unit
Ideally suited for new build and full home renovations our 7001iAW air to water heat pumps utilise high efficiency, low-carbon home heating technology to deliver a green energy source for home heating and hot water.
Guarantee Lengths
- Standard Guarantee – 2 years
- With Alto Energy’s MCS umbrella scheme – 7 years
