BTU from GPM Calculator

Calculate heat transfer in hydronic systems from flow rate and temperature change.

Water flow rate through system.
GPM
Temperature of water entering heat exchanger.
°F
Temperature of water leaving heat exchanger.
°F
Percentage of glycol in solution (0-50%).
%

Results

Heat Transfer Rate-Btu/h
Cooling/Heating Tons-tons
Heat Transfer-kW
References: ASHRAE Handbook - HVAC Systems and Equipment, Chapter 13. Hydronic heating and cooling system calculations.