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Hi Tech Geothermal Heating
"Consistent, Clean, Comfort"
About Us
Hi Tech Geothermal Heating in River Falls, WI, has been focused on personalized customer service and quality since 1996. We have the expertise to provide the best in energy-efficient heating and cooling systems. With over 30 years of experience in the design and installation of geothermal systems, you can be assured you'll receive the finest products and service currently available.
Ask us about our special financing options!
Our Story
Hi-Tech Geothermal Heating in River Falls, WI, has been delivering expert heating and cooling solutions with a personal touch since 1996. Founded by owner and chief engineer Dennis DeMar, the company began as Hi-Tech Service Company, offering energy-efficient heating options to the local community. In 2004, Dennis and his team made a pivotal decision to not only work on geothermal systems, but to provide services for all your heating and cooling needs, a move that has defined the company’s mission to provide “Consistent, Clean Comfort” to homeowners and businesses across west-central Wisconsin and eastern Minnesota.
With over 30 years of hands-on experience in geothermal design and installation, Hi-Tech Geothermal Heating is a leader in providing ultra-high efficiency heating and cooling systems that are built to last. These systems, now branded under Enertech (formerly GeoComfort), are made in the USA and installed by fully trained, IGSHPA-accredited, and EPA-certified technicians. The company is licensed, insured, bonded, and maintains an A+ rating with the Better Business Bureau, ensuring professionalism, safety, and peace of mind for every customer.
Geothermal heating and cooling systems offer unmatched benefits over conventional systems. They don’t rely on fossil fuels, meaning zero toxic emissions, and they use minimal electricity—making them not only energy-efficient but environmentally friendly. In fact, geothermal systems can be up to 500% efficient, earning them recognition by the U.S. EPA as the most efficient option available today. With a typical lifespan of 20–24 years, and an indefinite life expectancy for the underground loop field, these systems also offer the lowest life-cycle cost in the industry. Many homeowners even enjoy free hot water, thanks to the system’s ability to reclaim heat during operation—reducing water heating bills by up to 60%.
Hi-Tech Geothermal Heating also offers a wide range of other services, including radiant floor heating, traditional air conditioning, air-sourced heat pump installation and repair, indoor air quality solutions, hot water boilers, gas and oil furnace services, garage heating, gas fireplaces, and air exchange systems. For clients who prefer standard systems, Hi Tech installs conventional heating and cooling products that are efficient, reliable, and backed by expert local service.
At Hi-Tech Geothermal Heating, every project is guided by experience, integrity, and a commitment to doing what’s best for the customer and the planet. Whether you’re upgrading your home’s comfort or building a new energy-efficient system from the ground up, Dennis and his team are ready to deliver outstanding results. Experience the difference that decades of expertise and a passion for clean energy can make.
Areas Served
St Croix County, WI | Pierce County, WI | Polk County, WI | Anoka County, MN | Chisago County, MN | Dakota County, MN | Hennepin County, MN | Isanti County, MN | Ramsey County, MN | Washington County, MN | Goodhue County, MN | River Falls, WI | Hudson, WI | Ham Lake, MN | Andover, MN | Stillwater, MN | Scandia, MN | Forest Lake, MN | Hugo, MN | North Branch, MN | Cambrige, MN | Nowthen, MN | Princeton, MN | Milaca, MN | Harris, MN | 100 mile radius
Our Professional Associations
- Better Business Bureau A+ Rating
- Wisconsin Geothermal Association
- St. Croix Valley Home Builders Association
- National Home Builders Association
Our Certifications
- IGSHPA Accredited Installers
- Licensed Heating and Cooling Technicians
- EPA Certified Service Technicians
- Manufacturer Certified Training
- Insured and Bonded
What We Offer
Our Specialties include:
- Geothermal Heating, Cooling, Design and Troubleshooting
- Service Maintenance Programs
- 30% US Tax Credit Available
Our Services include:
- Geothermal Heating, Air Conditioning, Indoor Air Quality, Radiant Floor Heat, Service Gas Fireplaces, Hot Water Boilers & Air Exchange Systems
- Furnace, Boiler, Oil Furnace, Garage, and Heat Pump Repair
- Service Maintenance Programs Available
- Garage Heater, Boiler, Oil Furnace
- Installation - Repair - Service
- Air Sourced Heat Pump
- UV Light Systems
- We Are The Local Experts At Geo Comfort
- We Offer Special Financing
- No Interest
- Pay Over The Phone Via Credit Card
- 30% US Tax Credit Available
- After-Hours Service
- Free Consultation and Estimates
- Weekend Hours by Emergency Only
- Commercial & Residential
Our Brands include:
Our Products include:
- Air Filters
- Humidifier Pads
- Furnace and Filters
- Boiler
- Geothermal
- Air Conditioner
- Gas Fireplaces
- Energy Efficient
- Heat Pump
- Water and Solar Hot Water Heaters
- Flow Center
- Heat Exchanger
- Geothermal Tech
- Lifetime Warranty and Compressor
- Geo Comfort Compass Series
- ECM Blower
- Radiant Geothermal
- Water 2 Water
- Geothermal, Ducted, Hybrid and Dual Fuel Geothermal System
- Forced Air Application
- Eco-Friendly
- Lower Utility Bills and Operational Cost
- Efficiency Rating of 400-500 Percent
- Environmental Friendly
- Twin Speed and Dual Capacity Equipment
- Quiet and Consistent Air Comfort
- Dehumidifiers
- Bonus Hot Water
- Geo-Thermal Retro Fit
- Green Living
- Existing Older Homes Can Benefit from Geothermal
- De-Super Heater - Used to Supplement your Hot Water
- Closed Loop System
Testimonials
On 8/14/2025
Todd Rehnelt
had this to say:
Dennis at Hi Tech Geothermal Heating is the best in the business.
On 7/22/2025
Terri
had this to say:
Fantastic experience. Ben is always so wonderful and thoughtful. Will always recommend!
On 7/17/2025
Barbara Mann
had this to say:
Great service! Installed whole house air conditioning in a very short time and I avoided suffering in the 90°+ weather! Very grateful, satisfied customer!
Testimonial written by Barbara Mann on this site.
On 7/17/2025
Barbara Mann
had this to say:
Great service! Installed whole house air conditioning in a very short time and I avoided suffering in the 90°+ weather! Very grateful, satisfied customer!
Testimonial written by Barbara Mann on this site.
On 7/10/2025
Jeffrey Carlson
had this to say:
Dennis and Ben were fantastic. This is my second Geothermal system, and I love it! Dennis and Ben took the time to go through our needs and provided us with a superior system. The job was professionally done and no mess. I highly recommend them.
Contact Us
Hi Tech Geothermal Heating
930 Chapman Dr. River Falls, WI 54022
Phone: (715) 425-6162
Fax: (715) 425-2378
Email: dennisdemar
Where To Find Us
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Payment Types Accepted
Visa, MasterCard, Personal Checks, Financing
Our Hours
Holiday Hours May Vary. Please Call For Details.
Monday: 7:30 AM - 4:30 PM
Tuesday: 7:30 AM - 4:30 PM
Wednesday: 7:30 AM - 4:30 PM
Thursday: 7:30 AM - 4:30 PM
Friday: 7:30 AM - 5:00 PM
News
On 4/1/2025 this was posted:Prepare for spring showers with preventative maintenance from Hi Tech Geothermal Heating in River Falls, WI. Keep your heating system in peak condition for year-round comfort.
On 3/1/2025 this was posted:
Spring into savings with a heating system tune-up from Hi Tech Geothermal Heating in River Falls, WI. Ensure your system is efficient and ready for the upcoming season.
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