North American GeoThermal
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Claim This BusinessAbout North American GeoThermal
North American GeoThermal operates from Fairfax, Virginia, delivering geothermal heating and cooling solutions throughout Northern Virginia. The company holds a 4.8-star average across 115 client reviews, reflecting consistent delivery of professional installations and repairs. Serving both Herndon and Fairfax communities, the contractor specializes in residential geothermal system work, including ground-loop installations and WaterFurnace heat pump servicing.
The contractor distinguishes itself through precise system sizing methodologies, employing Manual-J calculations to ensure equipment matches home heating and cooling demands. Reviews document installations featuring more than 800 feet of vertical ground loops, demonstrating capacity for substantial residential projects. The team handles component-level repairs including control board replacements and electrical fuse diagnostics, avoiding premature full-system replacements when individual components fail.
What Customers Say
All six accessible reviewers award five stars, with customers specifically praising technicians Will and Curtis. Multiple reviews note same-party responsiveness, with one technician arriving equipped with components onboard. Customers consistently highlight thorough diagnostic efforts extending nearly three hours in complex repair scenarios.
Working Hours
| Sunday | Closed |
| Monday | 7 AM–5 PM |
| Tuesday | 7 AM–5 PM |
| Wednesday | 7 AM–5 PM |
| ThursdayToday | 7 AM–5 PM |
| Friday | 7 AM–5 PM |
| Saturday | Closed |
Services
Geothermal System Installation
Complete residential geothermal installations featuring vertical ground-loop drilling exceeding 800 feet and full system commissioning.
Heat Pump Repair
Component-level repairs including control board replacement, performed efficiently with parts stocked on service vehicles.
Diagnostic Services
Thorough troubleshooting identifying root causes like burned-out fuses rather than recommending unnecessary system replacements.
System Replacement Consultation
Evaluation of existing ground-loop integrity before recommending heat pump replacement, ensuring homeowners move forward confidently.
Preventive Maintenance
Annual service visits checking unit performance and providing maintenance assessment for geothermal systems.