Furnace & Boiler service and repair

Serving residential and commercial customers in Southern Wisconsin

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We’re your local heating experts

Rock Valley HVAC of Janesville, Wisconsin, wants to be your trusted heating contractor. The cold, harsh Wisconsin winters are rough on a heating system.

When you need service, put your trust in Rock Valley HVAC to provide fair pricing, free quotes, and excellent customer service!

Rock Valley HVAC takes care of your heating needs

It takes a lot to keep your home or business warm. From deciding to replace your comfort system to scheduling maintenance or repairs, Rock Valley HVAC has you covered on all fronts.

Whether your unit stops working mid-morning or the middle of the night, Rock Valley HVAC will be out to repair your comfort system in no time. We service, repair and install most heating equipment including furnaces, boilers, radiant systems, package units and more.

Replacing your comfort system is a big step

Do you know where to begin? Don’t worry; we’ll help you determine which heating unit is best for you based on the size of your home or business, your air quality requirements, budget, and desired energy efficiency.

We will work with you every step of the way, from selecting the best heating system and financing solution, to executing an expert equipment installation.

Don’t forget about maintenance

Equipment maintenance is an important part of the dependability of your comfort system. You can’t completely prevent your heating system from breaking down, but you can help thwart it with regular preventive maintenance.

Rock Valley HVAC’s comprehensive 23-point heating system tune-ups help you save in two ways. First, a well-maintained unit will run more efficiently and uses less energy. Second, proper maintenance means fewer costly repairs.

Heating system services:

Furnace Replacement

We offer affordable furnace replacement for residential and commercial properties.

Furnace Service

Don’t risk your comfort and property by putting off the furnace service you need.

Furnace Repair

Whether the problem is a quick fix or a larger job, we can handle it.

Furnace Cleaning

Giving your furnace a clean and check is an important part of the dependability of your heating system.

Boiler Service

Our 23-point tune-up will have your boiler system running as efficiently and safely as it was intended.

Boiler Replacement

When the time comes to have a boiler replaced, count on Rock Valley HVAC to help you through the process.


Rock Valley HVAC offers many different types of thermostats to fit your preferences.

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Why Choose Us?

Nearly 25 years experience in the HVAC/mechanical field

More than 15 years serving southern Wisconsin

Expert service, repair, and installation services

Financing available through Synchrony Financial