An air to water heat pump extracts heat from the air outside and uses it to warm your radiators, underfloor heating and hot water. It works even when it's cold, yes, even on a typical British winter morning, and runs on a fraction of the energy of traditional electric heating. WorldsEnergy installs MCS-certified air source systems from leading brands across Essex, London and the UK.
What are air to water heat pumps?
Air to water heat pumps absorb warmth from outdoor air and transfer it indoors via a refrigeration cycle. They need a small amount of electricity to run, but produce far more heat energy than they consume. Think of it as an air conditioner running in reverse, except instead of cooling your living room, it's keeping you cosy and supplying your hot water.
How do air to water heat pumps work?
An outdoor unit draws in air and extracts its heat. A compressor raises the temperature, and the warmth is transferred to water circulating through your heating system and hot water cylinder. Modern units are quiet, efficient and designed for UK climate conditions.
Air to water vs air to air
Air to water systems heat water for radiators, underfloor circuits and hot taps. Air to air heat pumps warm the air directly via indoor units, great for heating (and cooling) but they don't provide hot water. Need both heating and hot water? Air to water is usually the answer. Compare with ground source heat pumps if you have suitable land.
Air to water heat pumps we install
Air source heat pump installation in Essex and London
The outdoor unit mounts on an external wall or on the ground, with clear airflow around it. We'll identify the best position during a site survey at your property in Essex, London or further afield. Indoor components connect to your existing or new heating system and hot water cylinder. Every installation is MCS-certified, properly commissioned, and eligible for documentation you'll need for grant applications. Book a free consultation to get started.
Why choose a heat pump?
- Lower running costs, Well-designed heat pumps can significantly cut heating bills compared to oil, LPG or old electric systems, especially when paired with good insulation.
- Smaller carbon footprint, Heat pumps use renewable energy from the air or ground, helping you heat your home without relying on fossil fuels.
- High efficiency, For every 1kWh of electricity used, a heat pump can deliver 3–4kWh of heat, and that's the clever bit.
- Year-round comfort, Air to water systems handle heating and hot water; air to air models can heat and cool your home.
- Built to last, With MCS-certified installation and regular servicing, modern heat pumps are a long-term investment in a warmer, greener home.
Common questions
Do air to water heat pumps work in cold UK winters?
Yes. Modern air to water heat pumps operate efficiently well below freezing and are widely used across the UK and Scandinavia. Correct sizing, insulation and commissioning are what matter most for comfortable winter performance.
Can an air source heat pump replace my gas boiler?
In many homes, yes. Air to water heat pumps can supply radiators, underfloor heating and hot water. We review your existing system, heat loss and cylinder setup during a survey to confirm the best approach.
Which air source heat pump brands does WorldsEnergy install?
We install MCS-accredited systems from leading manufacturers including Panasonic, Mitsubishi and LG, selected to suit your property, budget and performance requirements.
