One of the most common questions homeowners ask before switching to renewable hot water is simple — how much will it cost to run? The good news is that air source hot water cylinders with built-in heat pumps are among the most efficient systems available today.
Understanding How Running Costs Work
An air source hot water cylinder captures up to 80% of its heating energy from the surrounding air and just 20% from electricity. That means lower bills and consistent hot water all year round.
Average Cost Per Tank
- • 80L–150L cylinder: typically costs £0.30–£0.60 to heat fully.
- • 200L cylinder: around £0.80.
- • 250L cylinder: less than £1 (≈€1.15) on an overnight tariff.
How to Reduce Costs Even Further
Pairing your cylinder with a solar energy system can further cut energy consumption, especially in summer when sunlight is abundant. Many of Gaia’s models are fully solar compatible — perfect for households looking to go greener.
Key Takeaway
With the right setup, an air source hot water system can deliver reliable hot water at a fraction of the cost of traditional systems — often saving 30–50% on bills.
Next Steps
See our full range of Air Sourced Hot Water Cylinders and calculate your estimated savings. Every litre counts when your system runs this efficiently.
Traditional systems often require complex pipework or boiler integration. Air source cylinders with built-in heat pumps are easier to install, need only water piping, and come in sizes 80–250L. They’re also compatible with solar for even greater efficiency.
