How efficient is your boiler?
Use this calculator to estimate the mean boiler efficiency of a condensing boiler system given a return water temperature and percent load at different time intervals.
Unit Type
Operation Profilei
Hours running
Boiler Load % of rated capacity
Total Hours Runnings
Return Water Temperature °C
0%
0%
Did you know?
Condensing boilers can achieve thermal efficiencies up to 98%. However, boiler efficiency is highly dependent on the return water temperature of your system and the percentage of the full load capacity that your system operates at.