🔥 GPM = BTU / (500 x Delta-T 20°F) & Pipe Friction Head Loss

Commercial Hydronic Boiler BTU Flow & Pump Sizing Calculator

Calculate closed-loop hydronic heating system flow rate (GPM = BTU/hr / [500 x ΔT 20°F]), calculate equivalent length pipe friction head loss (ft of head) across copper/steel mains, and size inline circulator pumps.

1. Project & Operating Inputs

Total Boiler Heat Output (BTU / Hr)

System Temperature Drop (Delta-T °F)

Customer Bid Price for Hydronic System ($)

Boiler, Circulator Pumps, Piping & Labor Cost ($)

2. Financial Breakdown & Yield

HYDRONIC BOILER GPM & HEAD LOSS

Turnkey Job Gross Profit

Mechanical Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost