How do I use the Commercial Geothermal Loop Field & Borehole Sizer?

Enter your specific project or financial parameters into the input fields above. The engine recalculates outputs dynamically in real time and updates visual charts and summary metrics.

Can I export and share these results?

Yes, you can generate shareable state links, export clean CSV spreadsheets, or print high-resolution executive reports with a single click.

Is this calculator free to use?

Yes, all calculation engines on ToolsVault are 100% free with no account registration or paywall required.

Commercial Geothermal Loop Field & Borehole Sizer

🏢 1. Facility Thermal Load Profile

Peak Cooling Load (Tons)

Peak Heating Load (MBH)

Building Type / Occupancy Cycle

🪨 2. Geotechnical & Borehole Geology

Subsurface Geological Formation

Borehole Depth (ft/well)

Borehole Spacing (ft on-center)

Drilling & Pipe Cost ($/ft)

Grout Thermal Cond. (k)

💰 3. Incentives & Utility Rates

IRA Section 48 ITC (%)

Electric Tariff ($/kWh)

Displaced Gas Cost ($/Therm)

Baseline Chiller COP

Loop Field Geometry

60 Boreholes

24,000 Total Trench/Bore Ft

Net GHEX CapEx

$436,800

After -$187k Section 48 ITC

Annual OpEx Savings

$64,800/yr

6.7 Yrs Simple Payback

Ground Heat Exchanger (GHEX) Physical Footprint Grid Array Configuration

Recommended Grid 6 × 10 Array 20 ft on-center square pitch

Surface Land Required 0.55 Acres Usable as parking, lawn, sports field

Sizing Metric 200 ft / Ton Design entering water temp: 45°F-90°F

HVAC Plant Efficiency & Energy Intensity Comparison

Ground-Source Geothermal Heat Pump (Cooling COP 5.8 / Heating COP 4.6) 55% Less Energy

Baseline Conventional System (Rooftop DX VAV + 82% Gas Boilers) 100% Baseline

Turnkey Subsurface Geothermal CapEx Schedule

Scope / Line Item	Metric Quantity	Unit Rate	Total ($)

25-Year Cumulative Lifecycle Value

$1,385,000 Net Savings

Closed-loop HDPE SDR-11 piping has a 50+ year design life (zero cooling tower water evaporation, zero Legionella chemical biocides, and zero outdoor condenser coil salt-spray corrosion).