🌍 ASHRAE / IGSHPA GSHP (150-250 Ft Borehole / Ton, U-Tube HDPE Thermal Res)

Commercial Geothermal Borehole Calculator

Size vertical closed-loop ground heat exchanger borefields for commercial Ground-Source Heat Pump (GSHP) installations under ASHRAE & IGSHPA standards: calculate required borehole linear footage (150 to 250 ft per ton based on ground undisturbed temperature and building heating/cooling imbalance), borehole spacing (15 to 20 ft grid), and geothermal drilling profits.

1. Project & Operating Inputs

Building Peak Heat Pump Capacity (Tons e.g. 150 TR Commercial GSHP)

Design Borehole Depth (Feet e.g. 400 ft Deep Vertical Boreholes)

Customer Bid Price for Drilled, U-Tubed & Grouted Borefield ($ / Ft)

Mud Rotary Drilling Rig, 1-1/4" HDPE DR11 Loops, Thermally Enhanced Grout ($)

2. Financial Breakdown & Yield

ASHRAE IGSHPA GEOTHERMAL BOREHOLES

Turnkey Geothermal Borefield Profit

Geothermal Drilling Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost