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Black-Haak demonstrated inconsistent service quality, with technicians providing responsive visits and knowledgeable diagnostics, but accountability issues arose when installation work was incomplete and warranty claims were denied for technician error. Response times were generally fast with same-day service availability, though pricing exceeded customer expectations in some cases.
Based on Google reviews
About the Contractor
Black-Haak Heating is an established HVAC and geothermal contractor serving Greenville and the greater Fox Valley region of Wisconsin. With over ten years of geothermal experience and more than 200 ground-source installations, Black-Haak works with the GeoComfort geothermal heat pump line across both closed-loop and open-loop configurations, and offers both vertical and horizontal boring to suit different lot sizes and soil conditions. Beyond geothermal, the company provides plumbing, commercial HVAC, ductless mini-splits, boilers, and indoor air quality services, making it a multi-trade resource for homeowners and businesses across Outagamie County and the surrounding Fox Valley communities. Black-Haak carries NATE certification across its technicians. Verified active operator per https://black-haak.com/geothermal-systems/ + black-haak.com (WI bundle audit 2026-06-02)
Over 10 years of geothermal expertise with 200+ installations across a 30+ community area from Fond du Lac to Green Bay, owning excavation equipment in-house for efficient vertical and horizontal loop installation tailored to challenging Wisconsin soil conditions.
Service Details
schedule
Years in Business
70 years
precision_manufacturing
Boring Methods
Vertical, Horizontal
emergency
Emergency Service
24/7 Available
factory
Brands Installed
GeoComfort
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24/7 Emergency
Regulatory Context
Geothermal Permitting in Wisconsin
Geothermal heat pump installations in Wisconsin require specific permits and compliance with state regulations regarding well drilling, loop installation, and refrigerant handling. Contact your local building department for specific requirements in your area.
How much can I save on heating and cooling costs with a geothermal system installed by Black-Haak in Greenville?add
Black-Haak's geothermal systems deliver heating at a fraction of traditional fuel costs and cooling at approximately half the expense of conventional air conditioning. Geothermal units last approximately 25 years with minimal maintenance, making them a long-term cost-effective investment for Greenville homeowners.
What types of geothermal loop systems does Black-Haak install in the Greenville area?add
Black-Haak specializes in horizontal, vertical, and open-water closed-loop systems. The company provides detailed loop field design and installation using slinky and race-track trench configurations, as well as vertical drilling methods particularly suited for challenging soil conditions in Door County and similar areas.
Does Black-Haak offer emergency geothermal service in Greenville?add
Yes, Black-Haak maintains 24/7 service availability with technicians on call around the clock. The company does not charge overtime fees on weekends, ensuring you can get emergency repairs and service whenever needed.
Does Black-Haak have experience with geothermal installation in new construction projects?add
Yes, Black-Haak can incorporate geothermal systems into both new construction and remodeling projects. The company has completed more than 200 geothermal installations across its service area and provides expert design and installation support for construction work.
What makes Black-Haak qualified to install geothermal systems in Greenville?add
Black-Haak has over 10 years of specialized geothermal expertise with more than 200 completed installations from Fond du Lac to Green Bay. The company owns its own excavation equipment for efficient job completion and maintains an A+ BBB rating with an apprenticeship program supporting technician development.
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If you need to reach Black-Haak Heating directly: (920) 750-7138
Geothermal heat pump installations in Wisconsin may require drilling permits, environmental site assessments, and compliance with local well and thermal energy regulations. Requirements vary by jurisdiction and system type (vertical, horizontal, open-loop). Contact your local municipality, state energy office, or a licensed geothermal installer for specific permitting requirements in your area.
