Heating upgrade estimator
What this works out
The steps
Work through these calculators in order. Each one takes the measurements from the step before.
- Heat loss, room by room
- Radiator sizes
- Boiler size: if you're keeping a boiler
- Heat pump size: if you're switching to a heat pump
- Hot water cylinder
- Expansion vessel
Questions for your heating engineer
- Will you do a full room-by-room heat loss survey before choosing the boiler or heat pump?
- What flow temperature will the system run at, and will the radiators need changing?
- Is the existing pipework big enough for the new flow rate?
- Where will the cylinder and the heat pump go, and is there space for them?