CALL: (715) 425-6162

24-Hour Emergency: (715) 425-6162

CALL: (715) 425-616224-Hour Emergency: (715) 425-6162

About Us

Hi, it's nice to meet you. We're Hi-Tech.

Company History

As Hi-Tech Service Company owner and chief engineer Dennis DeMar puts it, “We’ve been installing energy-efficient geothermal systems ever since I founded the company in 1996, but in 2004 we made the decision to specialize in geothermal.” Today the company is known for providing “Consistent, Clean Comfort” and serves west-central Wisconsin and eastern Minnesota with expert design and installation by Dennis and his team of fully trained specialists.

Hi-Tech assures customers of the finest products and services available today. The company is an IGSHPA-accredited installer and employs EPA-certified service technicians.

The High Tech Difference

  • BBB Rating of A+
  • EPA Certified Service Technicians
  • Licensed, Insured, and Bonded
  • "Hi Tech is exceptional. They are honest, thorough and thoughtful. After they fixed some of our poorly installed geothermal equipment, we have saved 20% on our monthly electricity bill. Dennis was efficient and the fix was reasonable. Great company!"

    - Jason G.
  • "The Hi-Tech team has worked on our house several times over the years. When we get our new one, we know exactly who to call to make sure we are taken care of! Thanks for all you have done over the years!"

    - Paul B.
  • "I am grateful for Dennis and his crew at Hi-Tech for their excellent installation and service. My system has reduced my costs on both heating and A/C. My home temperature is very comfortable and worry free. My system is running perfectly and performs just as you said."

    - Tony M.

Now that we've met, let's schedule an appointment.


Hi-Tech Service Company
930 Chapman Drive
River Falls, WI 54022

Contact Us

Phone: (715) 425-6162
Send us a message.


Mon-Fri: 7a-5p
© Hi-Tech Service Company