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Wohlers Heating & AC Corp. has served Dane County and greater Madison since its founding and specializes in geothermal system design, installation, and repair. The company has been installing geothermal heat pump systems for over 35 years and is a ClimateMaster geothermal equipment partner. Additional equipment lines include Rheem, Mitsubishi, and Weil-McLain. Wohlers holds Top Rheem Pro Partner Dealer status in the Midwest and has been voted Best Heating and Cooling Company in Cottage Grove for 15 consecutive years. Service extends across Dane County including Madison, Sun Prairie, and Cottage Grove for both residential and commercial customers. The company is an ACCA member.
Verified active operator per wohlersheating.com (WI import 2026-06-02)
Wohlers Heating & AC in Cottage Grove, WI — 35+ years geothermal installation, ClimateMaster dealer serving Dane County since 1991.
Service Details
schedule
Years in Business
35 years
factory
Brands Installed
ClimateMaster, Rheem, Mitsubishi, Weil-McLain
Service Area
Serves 5 areas across Wisconsin
Cottage GroveMadisonSun PrairieStoughtonMcFarland
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 does geothermal installation cost in Cottage Grove, Wisconsin?add
Geothermal heat pump installation in Cottage Grove typically costs between $18,000–$45,000 depending on system size, loop type (vertical vs. horizontal), lot conditions, and home square footage. Available state and utility incentives can reduce net cost (federal §25D credit ended Dec 31, 2025 under OBBBA; §48 commercial ITC may still apply). Request quotes from multiple certified installers in Wisconsin to compare pricing.
Do I need a permit for geothermal drilling in Wisconsin?add
Most Wisconsin municipalities require permits for geothermal well drilling and ground loop installation. Requirements vary by county — some require driller licensing, environmental impact review, or water well permits. Your geothermal installer should handle the permitting process. Contact your local Cottage Grove building department for specific requirements.
How long does a geothermal system last in Cottage Grove?add
Geothermal heat pumps typically last 20–25 years for the indoor unit and 50+ years for the ground loop. In Cottage Grove's climate, a properly maintained system provides reliable heating and cooling with minimal degradation. Annual professional maintenance and filter changes every 3 months help maximize system lifespan.
Is my property in Cottage Grove suitable for geothermal?add
Most properties in Cottage Grove, Wisconsin can support geothermal systems. Vertical loop systems require minimal land area (as little as a standard residential lot), while horizontal loops need more yard space. A qualified installer will conduct a site assessment including soil conductivity testing to determine the best loop configuration for your property.
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Thanks — we'll review your request and forward it to Wohlers Heating & AC Corp. within 1 business day. If you asked to compare quotes, we'll pass it to up to two more local installers as well. They typically respond within 1–2 business days after that.
If you need to reach Wohlers Heating & AC Corp. directly: (608) 249-3407
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.
