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Count on our team of experts to professionally service any furnace or boiler.

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Maintenance helps keep the heat on, for less.

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Dehumidifiers 101: Types of Units and Their Benefits

How can dehumidifiers keep you healthier and more comfortable at home? Find out with a little help from the pros at Gross Heating & Air Conditioning. The Benefits Dehumidifiers...

For Just-Right Comfort, Trust the HVAC Experts at Gross Heating & Air Conditioning

If you’re looking for ordinary heating and cooling service, you may start with an internet search, compare online ratings, or simply choose the first company offering a discount on HVAC service. But if you want extraordinary home comfort care, ask around—only a real person can tell you about personal service. And in the Brookfield and Metro Milwaukee area, people will tell you that Gross Heating & Air Conditioning is the company you can trust for quality installations, repairs, maintenance, and more.

Brookfield and Milwaukee Suburbs Turn to Gross for the Most

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 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 has been recognized as a top Carrier Factory Authorized Dealer, meeting the industry’s most rigid training and service standards. In fact, the vast majority of problems we see in homes and commercial facilities are due to improper installation, so all our technicians undergo continuous training and are NATE- and EPA-certified.

100 Percent Satisfaction Guarantee on All Furnace and AC Services

We offer all of our customers a 100 percent satisfaction guarantee. If, for any reason, you are not happy with your Carrier equipment within one year of installation, we will repair, replace, or refund your money.

In the heating and air conditioning business, trust is vital. For over 90 years, the Gross Heating family has helped homeowners and businesses stay comfortable, no matter the weather. We know that every call we take and every job we perform is an opportunity to build a long-term relationship with a customer, so we treat everyone like family, from start to finish. We’re proud of the awards we’ve earned from Carrier and Angie’s List, and of our 5-Star rating on Google, but for us the greatest honor of all is simply a referral from a happy customer.

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.

Gross Heating Knows How to Help

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For warmth when you need it, trust us to install, service, repair, or replace your furnace, boiler, or alternative heating system. Call us if you have an emergency, or for maintenance that prevents problems.


Don’t be phased by hot days—Gross Heating installs and repairs air conditioners and heat pumps to put you in control of your comfort. With regular maintenance, we’ll also help you control cooling costs.

Air Quality

Our experts can test indoor air quality with AirAdvice for Homes, then recommend air purifiers and other products to clean your air and control humidity. Ask us about programmable thermostats and CO alarms, too.


We have answers to all of your heating and cooling questions.

When is the best time to replace my furnace?

Don’t wait until your furnace dies to consider replacing it. In an emergency—usually in the dead of winter—you’ll be in such a rush to restore heat that you might not carefully weigh all your options for service and savings, plus it will be more difficult to schedule an install in a timely manner. If you have annual maintenance performed, we’ll be able to catch early warning signs and give you recommendations for a new installation.

Is it cheaper to install an AC with a furnace?

Yes, upgrading your air conditioning or adding air purifying products during a furnace installation will save you an extra trip charge and labor fees. Your Gross Heating technician knows exactly how they work together and is happy to take care of several comfort needs in a single trip.

How often should I service our furnace or boiler?

Annual maintenance is recommended to ensure safe, reliable, and efficient heating through the winter. It’s always a good idea to test and adjust your system before you really need it, so call us up before the temperatures go down.

How often should I replace my furnace filter?

Recommended intervals are as follows: one-inch disposable filters should be replaced monthly while four-inch media cartridges or high efficiency particulate air (HEPA) filters only have to be replaced every six to 12 months. If you smoke indoors, burn candles, have pets, or have construction in your neighborhood, it’s likely you’ll need to replace them more often.

Doesn’t my furnace or AC filter clean the air?

Yes, to some degree, but its primary purpose is to prevent dust and other particles from getting inside the system and slowing it down. An air purifier, however, is designed to eliminate these pollutants from the air you breathe. In fact, a Carrier® system with Captures & Kills™ technology removes up to 99 percent of all airborne impurities, including mold and bacteria that can make you sick.

What can I do about rooms that are always too hot or too cold?

The HVAC experts at Gross Heating have solutions to make every room just-right. Zoning is an option that uses motorized dampers inside your ductwork to direct treated air where it’s needed most, without wasting energy or leaving certain areas over-serviced. Ductless split systems are also a great choice if you have specific rooms that don’t have ducts or don’t receive enough heating or cooling. These small units utilize a heat pump to control temperature one room at a time.

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

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