Providing Your Business with the Best Service and Value

When you call on Bay Heating Service, you know you’ll receive prompt and courteous service. Our factory-trained service technicians are experienced in repairing all major brands of heating, cooling, and ventilation equipment. You’ll feel confident you’ll be able to run your business even if an emergency arises, because our service department is on call 24 hours a day, seven days a week. We provide service to most of northeastern Wisconsin.

Offering You Only the Highest Quality Products

If it’s time for a new system, you’ll be glad you called on Bay Heating Service. We sell and install only the highest quality equipment in the marketplace. Whether you want new equipment or tenant improvement installations, our team of highly trained and qualified installation technicians will quickly get the job done for you.

Because it’s our mission to achieve excellence in customer satisfaction, we provide our installation technicians with additional training each year. That’s why you can count on them to be skilled at their trade and knowledgeable about the system you purchase.

Efficient Equipment Helps Improve Your Bottom Line

We want to help you save money, and one of the best ways to do that is to upgrade your Heating Ventilation and Air Conditioning (HVAC) system to newer equipment with higher energy efficiency standards. For nearly 50 years, we’ve helped businesses reduce their operating costs by implementing new ideas for HVAC efficiency.

We also offer several types of maintenance packages specifically designed to reduce operating costs and prevent premature equipment replacement. Our Energy Savings Agreement enables you to be proactive and minimize wear-related failures, prevent unexpected down time, and correct operating irregularities. We’re proud to offer you the benefits of a complete service program at an affordable cost.

Purifying the Air You Breathe

The Environmental Protection Agency has conducted studies showing that the air inside a facility can be at least 20 times more polluted than outside air. We can improve your indoor air quality by adding an American Standard AccuClean electronic air filtration system, which captures 99.98 percent of unwanted particles and allergens from filtered air down to .3 microns and helps extend the life of your system.

Customer Support

The best in Customer Service. Give us a call!

24 Hour Service

When that old furance quits on you in the middle of the night, we are here to help!


Come home to pure comfort with a Bay Heating Service installed comfort system.


Our technicians are trained and certified for your commercial project.


Don't be left in the cold. Trust Bay Heating to keep you warm during the next polar vortex.

Air Conditioning

Can't take the heat? Our certified technicians are ready to cool you down this summer.