Heat loss
Room-by-room heat loss helps show what the system must actually deliver.
Heat pump guidance
Heat pumps: what should be checked before quotes?
A heat pump is a heating design project, not just a boiler swap. The important questions are heat loss, emitters, hot water, controls and expected flow temperature.
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Quick answer: Before getting a heat pump quote, ask for heat-loss work, emitter checks, hot water design, controls strategy and outdoor unit placement. The quote should explain how the system will heat the home, not just name the equipment.
Before quotes
What to check first.
These checks help separate useful guidance from product pressure.
Emitters
Radiators, underfloor heating and flow temperature affect comfort and performance.
Hot water and controls
Cylinder space, household demand and controls should be explained before installation.
Comparison table
Questions to separate before quotes.
| Decision area | Why it matters | Question to ask |
|---|---|---|
| Heat loss | Sets the load the system must meet. | Can I see the room-by-room heat-loss calculation? |
| Emitters | Radiators or underfloor heating affect flow temperature. | Which emitters need changing and why? |
| Hot water | Cylinder sizing and location affect cost and practicality. | What hot water arrangement is being proposed? |
| Controls | Controls affect comfort and day-to-day use. | How should the system be run in normal weather and cold weather? |
Installer questions
Ask better questions before you compare prices.
Use these prompts to make the quote conversation more specific and less sales-led.
- What flow temperature is the design based on?
- Which rooms are most likely to need radiator changes?
- How will hot water be stored and controlled?
- What assumptions are used about insulation and draughts?
Next-step route
Check the heat pump route status.
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Disclosure
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No. Some homes may need radiator or emitter changes, but this depends on heat loss, design temperature and the existing system.
Often it should be considered early. Lower heat demand can make heating design easier, but the right order depends on the property.
It should explain heat loss, emitters, hot water, controls, outdoor unit position and the design assumptions behind the recommendation.