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Heating and Cooling Contractor in Wisconsin Rapids, WI    

Having served the community since 1953, our HVAC business knows a thing or two about keeping your home or business comfortable. We complete furnace repairs during winter’s coldest months and provide air conditioning services when temperatures start to rise. Get the best service in exchange for your hard-earned money by hiring Guelzow Heating & Air Conditioning Service for your heating or cooling job. We promise to arrive as scheduled, work tirelessly, and clean our work area before leaving. 




Hire us and enjoy peace of mind knowing your high-efficiency furnace, boiler, or radiant floor heating will operate all winter. Through the years, we have built a reputation for providing affordable and friendly service.

Overheating is bad for your body and downright uncomfortable. Relax in the cool air this summer after letting our expert technicians perform preventative maintenance on your unit.
Air Quality

Don’t wait until something goes wrong before you improve the air quality inside your home or business. Our duct-cleaning services will remove pollutants and help with your allergies.
About Guelzow Heating & Air Conditioning
Over 60 Years in the Business!

We’ll Keep You Comfortable

Wisconsin knows a cold like no other state, and when it's winter, you want to make sure that you and your family can come home to a warm and comfortable home. Similarly, don't let a sweltering summer heat drive you insane when the perfect air conditioning system is only a phone call away. Guelzow Heating & Air Conditioning Service, LLC in Wisconsin Rapids will provide the products and services you need to keep your home cozy year-round. Our fantastic team has years of experience with homes of all types throughout the area and, as such, can install and maintain your system with an unmatched level of professionalism and efficiency.

With nearly 60 years in the business, Guelzow Heating & Air Conditioning Service has stood the test of time. Clint Guelzow started his business in 1953. To put into perspective how long ago that was...the company's first phone number was "65"! Clint's son, Mark, purchased the business from his father in 1983. Tyler Stanczyk and Joel Berry have owned Guelzow Heating and Air Conditioning since 2009. This means that we were here in 1953 and plan to be here in 2053 and beyond. For more information on our services or available financing options through Greensky call today!


Joel - Owner


Jim - Salesmen


Tyler - Owner


Top-Quality Products

We offer top-quality heating, cooling, and ventilation products from brands, like Bryant®, Armstrong Air, and Aprilaire®! We provide comfort solutions with the best products available, and we believe in the equipment that we sell. The technology, efficiency, and reliability of the equipment is only part of the story. Add the peace of mind that comes with the best warranties in the industry and you have a winning combination. Of course, those quality products are only as good as the installation and the service that back it up. Pride in workmanship is not a lost art at Guelzow Heating & Air Conditioning Service.

Honest and Reliable Service

When you’re looking for expert heating and air conditioning repair and installation services, look no further than Guelzow Heating & Air Conditioning Service. Our service and experience by far surpass competitors in air conditioning and heating contracting, leaving customers not just satisfied but happy. For years, we’ve kept the beautiful people of Wisconsin Rapids cozy and comfortable by providing quality, specialized service that’s honest and reliable. Our team offers commercial refrigeration repair, expert air duct cleaning, and more! Contact us today!

The next time you find yourself in need of HVAC services, reach out to us at Guelzow Heating & Air Conditioning Service. We have the experience you need and prices you’ll love! Call (715) 423-1086 now!



We had our thermostat go out at 10pm on Christmas. Within an hour after calling, someone was to our house and had it fixed! Their service was great! Thank you!
- Colin Reffner
Called at 8 a.m. Monday to have them look at a water heater and by 11 a.m. it was replaced and working great. Also had them put in an air conditioning unit last spring and a new furnace before that; every time I have been very happy with the work done!!!
- Kylie Dampier
I had to have my furnace replaced. Guelzow handled the installation promptly and professionally. They were very helpful and pleasant to work with. I would highly recommend them.
- Bernice Thomas