Pump Power Calculator

Calculate pump power requirements for hydronic systems based on flow and head.

Pump flow rate.
GPM
Total dynamic head (pressure + friction + elevation).
ft
Overall pump efficiency (typical 60-85%).
%
Motor efficiency (typical 85-95%).
%

Results

Water Horsepower-hp
Brake Horsepower-hp
Required Motor Power-hp
References: ASHRAE Handbook - HVAC Systems and Equipment, Chapter 44. Pumps. Power calculations per Hydraulic Institute standards.