Guides and analyses

Each guide supports a tool: it explains what the calculation alone doesn't, with sources and numbers you can check.

Bar chart comparing 9 kW advertised with 6.4 kW measured, a −29 % gap
Pool
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.
  • 14 min read
  • 10 models compared