Renewables
Tools and write-ups for home energy: working out what it takes to heat a house with a heat pump, and getting at the data and controls inside solar inverters, batteries and EV chargers.
Free tool
Heat Loss & Heat Pump Calculator
Room-by-room heat loss for a UK home, and the heat pump, radiators, pipework, hot water, running costs and noise that follow from it.
- Room-by-room heat loss from a floor plan you draw
- Heat pump, radiator and pipe sizing
- Seasonal efficiency, running costs and payback
- Hot water and MCS 020 noise checks
Open the calculatorFree to use. Your projects stay in your browser.
