CalculHouseCalculHouse

Tools that make decisions simple

CalculHouse brings together free calculators, assessment tools and comparison tables — get a clear answer in a few clicks, no sign-up.

Our tools

Power dial showing a 10 to 13 kW range at ± 15 %, above a water surface
Pool & spa

What power for your pool heat pump?

Size your pool heat pump in 5 questions — instant, personalised result.
Bar chart comparing 9 kW advertised with 6.4 kW measured, a −29 % gap
Pool & spa

Pool heat pump: 9 kW advertised, 6.4 kW real in shoulder season

A survey of 10 spec sheets: ‑29 % on average between the advertised power and the power at 15 °C.

We add new calculators and comparison tools regularly. Have one in mind? Suggest a tool