COMPLETE Heating
& Cooling Service

Professional service for your furnaces, air conditioners, heat pumps, and more.

About Us

For the most value, the most experience, and the most dependable products, home and business owners in your area have been relying on Gross Heating & Air Conditioning since 1925. We service virtually all makes and models of heating and cooling equipment, but we’re proud to recommend Carrier® for years of reliable, energy-efficient comfort. Gross Heating & Air Conditioning has been recognized as a top Carrier Factory Authorized Dealer, meeting the industry’s most rigid training and service standards.

Gross Heating & Air Conditioning service trucks.

What Our Customers Say

“Gross was fast to get back to us and fast to schedule on the coldest day in years!!

John G was a superstar, diagnosing our problem quickly and effecting repairs in a hard to reach and painful location.

Thanks to the whole team!!”
- Jeff A.

“I always request Randy for any job on my furnace because he does an outstanding job of answering all my questions and explaining everything he's doing and making sure everything is working properly before leaving. He even gives me good tips along the way.”

- mary m.

Ask Us About Financing for Your New Heating or Cooling System

Man, woman, and child in a field.

How Our Maintenance Agreement Saves You Time and Money

A maintenance agreement from Gross Heating & Air Conditioning gives you peace of mind. It’s a great way to reduce or eliminate unexpected repair bills, ensure top performance, save money, and prolong the life of your equipment. Here’s how you can benefit even more with a maintenance agreement from Gross Heating & Air Conditioning:

  • Equipment lasts longer
  • Regular maintenance prevents costly repairs
  • 15% discount on repair parts
  • Possible 10-30% monthly energy bill savings
  • Use your maintenance contract as a selling point
  • If you move, your maintenance agreement will automatically transfer to the new owners
  • Priority scheduling even during our busy seasons
  • Reminders for a clean and check

Our News

Maintaining the Best Humidity Level in a Wisconsin Winter

Warmth is only a part of the comfort equation when the outdoor temperature dips in . Another factor that affects your health and heating bills is indoor humidity. What Is Indoor Humidity? Simply put, humidity refers to the amount of water vapor present in the air. It can rob you of comfort if it is…

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How to Keep Warm During Extreme Cold Weather

We receive countless calls every time the temperatures drop below normal ranges, as homeowners here in encounter problems with their home’s heating system. With the record-low temperatures and extreme conditions most of the country is currently experiencing, our professionals want to share some insights and tips with you to keep your indoors cozy while Old…

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2026 presidents award. Carrier factory authorized dealer logo. NATE cerfication seal. Distinguished Carrier logo. BBB logo. Air Quality logo.