About Us

Exceptional Service From Your Neighborhood Heating and Cooling Guys
When Alan Ruesch retired after more than 40 years at Gross Heating & Air Conditioning, he left the business in the very capable hands of long-time employees Jerry Nee and Joe Mechanich. Jerry has been in the industry as a service technician for more than 27 years—25 of those with Gross—while Joe has 24 years of experience as a service tech and installer, including 10 years as a Comfort Consultant.
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.
Four Reasons to Choose Gross Heating
- 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.
- 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.
- 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.
- 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.

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