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Dostal Geothermal Systems, Inc.

"Dostal Geothermal Systems, Inc."

About Us

Dostal Geothermal Systems, Inc. was founded in 1999 by Dennis Dostal, a lifelong Rice Lake resident with a passion for sustainable energy and a commitment to serving his community. What started as a small operation has grown into one of Barron County’s most trusted names in geothermal heating and cooling.

For over two decades, we’ve specialized in environmentally responsible solutions that help homeowners and businesses reduce their energy costs while minimizing their carbon footprint. Our services include geothermal heating and cooling systems, expert installation and repair, high-efficiency geothermal heat pumps, closed loop systems, and commercial refrigeration. Every project we take on is backed by years of experience, a dedication to quality, and a genuine desire to do what’s right for our customers and the planet.

We’re proud to call Rice Lake home and to serve the surrounding communities with integrity, reliability, and innovation. Whether you’re building new, upgrading your current system, or facing an unexpected breakdown, our team is here to help with prompt, professional service—including emergency support when you need it most.

At Dostal Geothermal Systems, Inc., our mission is to deliver sustainable, high-performance heating and cooling solutions that improve comfort, reduce environmental impact, and build lasting relationships with our customers. We believe in doing the job right, standing behind our work, and helping our community thrive—one system at a time.

Areas Served

Barron County, WI | Rice Lake, WI

What We Offer

Our Specialties include:

At Dostal Geothermal Systems, Inc., geothermal heating isn’t just a service—it’s a specialty rooted in innovation and sustainability. By tapping into the consistent temperatures beneath the earth’s surface, our geothermal systems deliver reliable, energy-efficient heating and cooling for homes and businesses alike. We pair this technology with expertly installed heat pumps that maximize comfort while minimizing energy costs. Whether you're upgrading your current system or starting fresh, our team brings deep expertise and a passion for helping customers transition to smarter, greener solutions.

Our Services include:

Installation and Repair: At Dostal Geothermal Systems, Inc., we believe in doing things right the first time. Whether you're installing a brand-new geothermal system or need expert repair on an existing one, our team brings decades of hands-on experience and a commitment to quality craftsmanship. We treat every home and business like our own, ensuring your system runs efficiently and reliably for years to come.
Geothermal Heat Pumps: Harness the power of the earth with our high-efficiency geothermal heat pumps. These systems provide heating and cooling by tapping into the stable temperatures underground—offering a sustainable, cost-effective solution for year-round comfort. Our technicians are trained to install and maintain these systems with precision, helping you reduce your carbon footprint while saving on energy bills.
Closed Loop Systems: Our closed loop geothermal systems are designed for maximum efficiency and minimal maintenance. Whether you're building new or retrofitting an existing property, we’ll help you choose the right configuration—horizontal, vertical, or pond loop—to suit your land and energy needs. Every loop we install is built to last, with durable materials and expert engineering.
Commercial Refrigeration: From walk-in coolers to large-scale refrigeration systems, we provide tailored solutions for businesses that rely on consistent cooling. Our commercial refrigeration services include installation, maintenance, and emergency repairs—keeping your products fresh and your operations running smoothly.
Emergency Services Available: When your system goes down, you need help fast. That’s why Dostal Geothermal Systems, Inc. offers emergency services to get you back up and running—day or night. Our responsive team is just a call away, ready to diagnose and fix issues with speed and professionalism.

Our Brands include:

Service All Makes & Models for Heat Pumps
Go Comfort
TTherm Geo

Our Products include:

Locally Owned & Operated
Geothermal Specialists
Full-Service Provider

Testimonials

On 7/17/2020 Russell Westrich had this to say:
I had supposed experts look at my geothermal unit and did the work they recommended. Spent $3000 for repairs but still not working well. Called Dennis Dostal and he came out and found problem in an hour. He came back & put part in . My unit has been working better than it's ever worked before. Knows what he's doing. Thank you. Testimonial written by Russell Westrich on this site.

Contact Us

Dostal Geothermal Systems, Inc.
Rice Lake, WI 54868
Phone: (715) 859-6699
Email: dostlgeo@citizens-tel.net

Where To Find Us

Payment Types Accepted

Personal Checks

Our Hours

Holiday Hours May Vary. Please Call For Details.

Monday: 8:00 AM - 5:00 PM
Tuesday: 8:00 AM - 5:00 PM
Wednesday: 8:00 AM - 5:00 PM
Thursday: 8:00 AM - 5:00 PM
Friday: 8:00 AM - 5:00 PM

FAQ

What types of heating systems do you specialize in?

We specialize in Geothermal Heating and Heat Pumps, offering energy-efficient solutions for both residential and commercial properties.

Do you offer installation and repair services?

Yes, we provide installation and repair services for all our systems, including geothermal heat pumps and closed loop systems.

What is a geothermal heat pump?

A geothermal heat pump uses the stable temperature of the ground to heat and cool your home or business. It’s an eco-friendly and cost-effective alternative to traditional HVAC systems.

What is a closed loop system?

A closed loop system circulates a fluid through underground pipes to exchange heat with the earth. It’s a common setup for geothermal heating and cooling and is known for its efficiency and low maintenance.

Do you work with commercial refrigeration systems?

Yes, we offer commercial refrigeration services, including installation and repair for businesses that require reliable cooling solutions.