Solar and Underfloor Heating

By Home Solar Guide Team||guide
Independently written | Evidence-based | Sources cited
Solar underfloor heating
Solar + heat pump + underfloor heating: the most efficient home heating combination.

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Can solar panels power underfloor heating?

Solar panels + underfloor heating (UFH) via a heat pump = the most efficient home heating system available: WHY IT WORKS: UFH operates at 35-45°C (low temperature). Heat pumps are most efficient at low temperatures (COP 4-5 at 35°C vs COP 2-3 at 55°C for radiators). Solar powers the heat pump — free heating. THE NUMBERS: Heat pump running cost with solar: £200-£400/yr (vs £800-£1,200 on gas boiler). Solar offset of heat pump electricity: 30-50% directly, 60-80% with battery. COST: UFH (retrofit): £3,000-£6,000. Heat pump: £3,500 after BUS grant. Solar (4-6kW): £5,500-£9,000. Total: £12,000-£18,500. SAVINGS vs gas: £600-£1,000/yr. Combined payback: 10-15 years.

Frequently Asked Questions

Related: Home Heating Systems

Solar panels are most powerful when combined with an efficient heating system. Heat pumps use solar-generated electricity to heat your home at 300-400% efficiency — making them the ideal partner for solar.

air source heat pump guide

Learn more about how air source heat pumps work alongside solar panels.

heat pump grants and the BUS scheme

The Boiler Upgrade Scheme offers £7,500 towards heat pump installation.

comparing heat pumps to gas boilers

When your boiler needs replacing, a heat pump powered by solar is the most efficient option.

From our sister site Home Heat Pump Guide

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