Business Details
19 Years
experience
Emergency
services
Your Trusted Partner for HVAC & Geothermal Solutions
Since 2007, Advanced Custom Geothermal has been delivering comprehensive HVAC solutions to residential and commercial clients across Wisconsin. Founded by Sean Steffes, our team combines decades of industry experience with specialized expertise in geothermal technology, positioning us as the state's leading WaterFurnace Geothermal contractor. We maintain Geo Pro Master Dealer status, a distinction held by fewer than 5% of WaterFurnace dealers nationwide, demonstrating our technical proficiency and commitment to quality. Our services span traditional HVAC systems including gas furnaces, air conditioning, and commercial refrigeration, alongside energy-efficient geothermal installations that leverage the earth's natural temperature for sustainable heating and cooling.With multiple customer testimonials highlighting significant energy savings and exceptional service, we emphasize personalized system design, transparent communication, and long-term client relationships. Our team provides free energy analyses to quantify potential savings, while our commercial division offers specialized geothermal consulting and architectural sheet metal fabrication. Backed by federal tax credits and Wisconsin-specific incentives, we ensure clients maximize financial benefits while maintaining optimal indoor air quality through services like duct cleaning and UV air purification.
Services
Geothermal Heating & Cooling
HVAC Installation & Repair
Air Duct Cleaning
Commercial HVAC
Refrigeration Services
Details
- Year established: 2007
Highlights and features
- We have over 15 years of experience in Wisconsin HVAC solutions
- Our team holds exclusive Geo Pro Master Dealer certification
- We provide free energy analysis to quantify savings potential
- We offer 24/7 emergency HVAC repair services
- We guarantee system optimization for Wisconsin climate conditions
Associations and certifications
- Geo Pro Master Dealer
- WaterFurnace
What people say
Excellent performance
Fantastic savings
Excellent employees
Beautiful system
Highly recommend
Services
Geothermal Heating & Cooling
Geothermal systems utilize underground temperatures for efficient climate control. Our WaterFurnace installations reduce energy costs by up to 70% while qualifying for federal tax credits and Wisconsin incentives. With over 15 years of experience, we design customized systems that integrate with existing infrastructure, providing year-round comfort through underground loop systems that outperform traditional HVAC solutions.
HVAC Installation & Repair
We offer comprehensive HVAC services for residential and commercial properties. Our certified technicians install and service gas furnaces, air conditioning units, and commercial refrigeration systems. With expertise in both traditional and geothermal technologies, we provide emergency repair services 24/7 while maintaining strict adherence to manufacturer specifications and industry safety standards for optimal system performance.
Air Duct Cleaning
Professional duct cleaning improves indoor air quality and system efficiency. Our NADCA-certified technicians use specialized equipment to remove contaminants from residential and commercial ventilation systems. This service extends equipment lifespan, reduces allergens, and enhances airflow distribution while complying with EPA guidelines for healthy indoor environments through thorough cleaning of ductwork, registers, and HVAC components.
Commercial HVAC
We provide tailored HVAC solutions for commercial buildings including geothermal design consulting and architectural sheet metal fabrication. Our services cover installation, maintenance, and repair of large-scale systems with emphasis on energy efficiency and code compliance. With specialized expertise in commercial refrigeration and light industrial HVAC, we ensure optimal climate control for businesses while maximizing cost savings through customized system designs.
Refrigeration Services
Our refrigeration division handles commercial installations and repairs including walk-in coolers, ice machines, and freezers. Certified technicians perform preventive maintenance and emergency repairs while ensuring proper refrigerant handling compliance. We specialize in energy-efficient systems that maintain precise temperature control for food service operations and industrial applications, backed by 24/7 service availability and comprehensive system diagnostics.
People
Sean Steffes
Owner
Sean Steffes founded Advanced Custom Geothermal in 2007 and has led the company's growth into Wisconsin's premier geothermal contractor. With extensive HVAC industry experience, he maintains active involvement in system design and customer relations while ensuring technical excellence across all installations.
Questions
How much can I save with a geothermal system?
Geothermal systems can reduce heating and cooling costs by 50-70% while qualifying for federal tax credits and Wisconsin state incentives.
Do you service both residential and commercial properties?
Yes, we provide HVAC and geothermal solutions for both residential homes and commercial buildings across Wisconsin.
Are financing options available?
We can help connect you with financing programs that offer low-interest loans for energy-efficient home improvements.
What emergency services do you offer?
We provide 24/7 emergency HVAC repair services for both residential and commercial clients throughout Wisconsin.
How long does installation take?
Most residential geothermal installations complete within 5-7 business days depending on system complexity and site conditions.
Do you offer maintenance plans?
Yes, we provide preventive maintenance agreements for both traditional HVAC and geothermal systems to ensure optimal performance.
