HOMEOWNER TOOLS

Your quote says 7 kW.
What can it deliver?

Check the published output of your proposed heat pump at the temperatures your home has been designed for.

Research preview · 15 brandsFree to use. No account needed.
1

Enter your proposal

You’ll find these details in your quote or design.

Your proposed heat pump

Match the full model code in your proposal.

Your home’s design conditions
kW

Use the heat loss calculated at the outdoor temperature below.

°C
°C

Outdoor is the cold-weather temperature used in the heat-loss calculation.

Flow is the water temperature the heat pump supplies to your heating at those conditions.

2

Your capacity comparison

At your home’s design conditions.

Look beyond the label.

A model’s advertised size is only part of the story. Enter your details to compare its published output with the heat your home needs.

Published output Your home’s heat loss

This checks published output against the heat loss you enter. Your installer must confirm the complete system design.

UNDERSTANDING YOUR RESULT

The conditions matter.

Two heat pumps described as “7 kW” can have different outputs at the same outdoor and flow temperatures. This checker puts the published figures alongside your home’s heat loss.

Where does the output data come from?

From model-specific manufacturer technical documents and certification records. Every model carries its source links, available conditions and data notes. The catalogue is a dated research snapshot, with coverage shown below.

Why might a result be labelled an estimate?

When your conditions fall between published points in a suitable table, the checker estimates between the surrounding values. It shows the points used and never extends the table beyond its published range. Graph-derived readings are separately labelled as approximate and show their chart-reading uncertainty. Model-specific interpolation restrictions are respected.

What about defrost and electric backup?

Capacity needs to be assessed on a consistent basis. The result shows whether defrost and supplementary heat are included, excluded or unconfirmed. It applies no generic defrost deduction. Rated or partial-load test figures are not treated as maximum heating capacity.

My exact model or conditions aren’t covered.

The checker will say when it cannot make the comparison. Ask your installer for the exact model’s heating-capacity table at your outdoor and flow design temperatures, including the defrost and backup-heater basis.

Explore the data coverageResearch preview · 15 brands

Coverage reflects the documents available for this version. A listed model may have limited test points or unresolved operating conditions.