Live demo
Radiator check
Heat pumps run radiators cooler than boilers do, so some radiators may need to be bigger to keep a room as warm, and others already have capacity to spare. Four short steps, with no tape measure: the boiler’s heating control, the rooms, which get warm enough, and the type of each radiator. Then, room by room, which are likely fine at 40–55°C, which are a straight swap for a deeper radiator in the same space, and the flow temperature the home could run at now.
How this works: method, sources and limits.
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Answers “will I have to change all my radiators?” before a survey. On a paid plan, the result can come to you as an enquiry.
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A 3D cutaway of an all-electric home: heat pump, hot water, radiators, solar, a battery, car charging and cooking, with a guided tour of how it fits together.
Watt's House
The same all-electric house, explored with Watt the cat. Send him round the house and whatever he sits beside is explained.