About Us

For decades, Gross Heating & Air Conditioning has been earning the trust of area homeowners and keeping families safe and comfortable.

New Owners, Same Exceptional Service

Exciting news—Gross Heating has new owners! Alan Ruesch has retired after more than 40 years at our company, leaving the business in the very capable hands of long-time employees Jerry Nee and Joe Mechenich. Jerry has been with us for 23 years as a service technician and service manager while Joe has 21 years of experience as a service tech and installer, including six years as a Comfort Consultant for Gross Heating. 
 


Joe and Jerry are supported by the same staff you already know and trust—you’ll hear the same friendly voices on the phone and see the same experienced techs and installers that you’ve counted on for years. 

Jerry and Joe thank Alan for building the great company they now call their own and look forward to carrying on his tradition of providing the very best in comfort for every customer.

Our Family Treats Your Family Just-Right


Gross Heating was founded by William Gross as a coal and oil business in 1925. After William died in the 1940s, his brother took over, but soon realized it was not for him and began looking for another “family” member to buy the business. That family member was employee, Mike Ruesch. The legacy was passed to Alan Ruesch, Mike’s son and also a Gross team member, in 1996 and the company continued to flourish under his leadership for almost 25 years. In early 2019, Alan retired and sold the business to Jerry Nee and Joe Mechenich.

At Gross Heating, our employees are family. And we know our customers feel the same way. If you look at our customer testimonials, many of our team members are mentioned by name and that’s important to us. There is no one person that is the “face” of Gross Heating—that’s what sets us apart from other companies.

Our Core Business Is Quality Heating and Cooling Installations


Our work goes far beyond basic residential and commercial heating and cooling systems. We can install any type of energy-efficient indoor comfort system, whether it’s for new construction or an existing building which has outgrown its capacity. We install quality Carrier® products that feature all the latest technologies—and have a full inventory of parts for 24/7 emergency service on all makes and models of systems. No matter your comfort needs, count on our pros here at Gross Heating.

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As Milwaukee and its suburbs grow, trust our employees—the face of Gross Heating & Air Conditioning—to keep pace with your heating and cooling needs and bring you innovative ideas that work. Alan Ruesch

Owner, Gross Heating & Air Conditioning

Four Reasons to Choose Gross Heating

  1. Comprehensive Design

    We evaluate the layout of your space, listen to your concerns, and then design a comfort system that fits both your space and budget.

  2. Experienced Team of Professionals

    Our staff doesn’t sell, they listen. We will help you select the right heating, cooling, and indoor air quality products for your needs.

  3. Quality Installations

    Proper installation is key to ensure that your unit works correctly. We supervise every phase and test your system to guarantee your satisfaction.

  4. 24-Hour Emergency Service

    We know emergencies happen at the worst times. Call our service department any time, 365 days a year, for assistance with your equipment.

Contact Us

This form is monitored during regular business hours, and a member of our team will contact you to confirm your requested appointment. If you have an emergency, please call 262-783-6000.

Maintenance Agreements

Maintenance agreements from Gross Heating & Air Conditioning are designed for your peace of mind. They’re a great way to reduce or eliminate unexpected repair bills, ensure top performance, save money, and prolong the life of your equipment.

$100 Refer-A-Friend Program

Love Gross Heating? Tell your friends and family about us and you’ll get $100 cash back when they have a furnace, AC, or boiler installed. Have a lot of friends and family? That’s great because there’s no limit! Ask for details.

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Gross Heating & Air Conditioning
3260 N. 126th Street
Brookfield, WI 53005
Phone: 262-783-6000
24-Hour Emergency Service Available
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