Heat Pump, Solar and Battery, Winchmore Hill N21
An 11.2kW Mitsubishi Ecodan designed room by room to run at 55°C, with ten solar panels on the rear pitch and a 9.5kWh battery.
- Heat pumpMitsubishi Ecodan 11.2kW
- Hot water250-litre cylinder
- Postcode areaN21
A Mitsubishi Ecodan, solar and a battery in Winchmore Hill
We installed a Mitsubishi Ecodan 11.2kW heat pump with a 250-litre cylinder, a 4.45kW solar system of ten panels and a 9.5kWh battery in Winchmore Hill N21. Every room was checked against its existing radiators so the system could run at 55°C, which gives it a designed seasonal efficiency (SCOP) of 3.99. A SCOP of 3.99 means almost 4 units of heat for every unit of electricity over a year. The £7,500 grant was applied, and at 32dB the unit sat within permitted development, so no planning application was needed.
The heat loss survey went room by room, comparing what each room loses on a cold day with what its existing radiator can give at 55°C. The design confirmed the radiators could stay, which kept the job simpler and the house familiar. Ten panels across the rear roof slope give 4.45kW of generation. Through the middle of the day the heat pump can run on the house's own electricity, and the battery keeps the surplus for the evening.
The Ecodan stands far enough off the boundary fence that the fan does not blow straight back off it, which is what makes a badly sited unit sound louder than it is.
The job in short
- Where: Winchmore Hill N21, London Borough of Enfield
- Heat pump: Mitsubishi Ecodan 11.2kW
- Hot water: 250-litre cylinder
- Solar: 10 panels, 4.45kW
- Battery: 9.5kWh
- Design: Room-by-room heat loss, 55°C flow, SCOP 3.99
- Planning: Not needed: 32dB, within permitted development
Photos from the job
Thinking about a heat pump in Winchmore Hill?
We measure every room, calculate the heat loss, check the radiators and the space for a cylinder, and send a written price with the grant already taken off. No cost and no obligation.
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