Calculators
Sizing Calculators
Free tools to help size the right commercial hydronic equipment for your job.
Boiler BTU Sizing
Estimate required heating output for a replacement boiler.
Circulator Pump Sizing
Calculate GPM and total dynamic head to select the right pump.
Expansion Tank Sizing
Determine the minimum expansion tank size for a closed hydronic system.
Air & Dirt Separator Sizing
Find the right separator connection size based on system flow rate.
Balancing Valve Sizing
Determine the right circuit balancing valve size for a branch flow rate.
Tankless Water Heater Sizing
Estimate required BTU input based on fixture flow demand.
Backflow Preventer Sizing
Get the right assembly type and size based on your application and flow rate.