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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

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 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 7/10/2025 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.

On 11/22/2024 Dennis Dischinger had this to say:
Can’t say enough about Hi-Tech Geothermal! Dennis is your guy for all things geothermal. Prompt, knowledgeable, reasonable, and experienced, Hi-Tech will be my only call from now on for my 15 year old Econar heat pump - be it maintenance, repair, or replacement. Save yourself the time and energy I spent searching for help before I got in touch with Hi-Tech - you will not regret it!

Contact Us

Hi Tech Geothermal Heating
930 Chapman Dr. River Falls, WI 54022
Phone: (715) 425-6162
Fax: (715) 425-2378
Email: dennisdemar@yahoo.com

Where To Find Us

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

You could qualify for a 30% Federal tax credit if you install before the end of the year!

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.

On 12/1/2024 this was posted:
Winterize your home with Hi Tech Geothermal Heating in River Falls, WI. Our geothermal systems offer efficient heating to keep you warm during the coldest months.

On 11/1/2024 this was posted:
Give thanks for warmth and comfort with Hi Tech Geothermal Heating in River Falls, WI. We ensure your home is cozy for holiday gatherings with reliable heating solutions.

Info

How Geothermal Works