Walworth HVAC Services

Residential & Commercial HVAC Services in Walworth, WI

Since 1978, H.J. Faust, Inc. has been the heating and cooling company Walworth, WI, residents and businesses call first. With more than 20,000 clients served across the region, NATE-certified and factory-trained technicians, and BBB accreditation, we’ve built our reputation on doing the job right. Our customers back that up: we’ve earned an Excellent rating from hundreds of Google reviews, with consistent praise for promptness, clear communication, and thorough work. We’re available 24/7 for emergencies and offer flexible scheduling for routine service.

We provide a full range of HVAC services for homes and businesses in Walworth, including:

• AC installation & replacement
• AC repair
• Mini split system installation
• Heating installation
• Heating repair
• Indoor air quality solutions
• Commercial cooling & heating

Ready to schedule HVAC service in Walworth, WI? Call H.J. Faust, Inc. today at (262) 418-0700. 

What Sets H.J. Faust, Inc. Apart

Our technicians aren’t just certified. They’re trained through the state-approved Associated Builders and Contractors (ABC) Apprentice Program, a structured five-year curriculum that pairs classroom instruction with hands-on field work under direct Senior Mechanic supervision. That foundation is reinforced year-round: every field and office employee attends a minimum of four training sessions annually to stay current on new equipment, technologies, and processes.

We start every service call with a thorough inspection before recommending any solution, and we don’t suggest more than your system actually requires. We install Lennox systems and service all major brands, including Carrier, Daikin, Goodman, Honeywell, Trane, and Bryant. So whatever equipment you have, we can work on it. We also offer competitive pricing and flexible scheduling to fit your situation.

Each year, we participate in the Lennox Feel the Love program, nominating a deserving member of our community, such as educators, first responders, veterans, or families facing hardship, and donating and installing a new heating or cooling system at no cost to them. It’s one way we put our values to work beyond the job site.

Annual Maintenance Agreement

Wisconsin’s climate demands a lot from both heating and cooling systems. We recommend one spring check-up for your air conditioner and one fall check-up for your furnace each year, helping catch developing issues before they become expensive failures and helping keep equipment running efficiently season to season.

Our Annual Maintenance Agreement makes that routine easier. Members receive:

• Furnace check-up and air conditioner check-up each year
• 30-point inspection on every visit
• Priority scheduling
• No overtime charges for after-hours emergency calls
• 10% discount on all parts and labor when repairs are needed

Air Conditioning Services in Walworth

Wisconsin summers bring enough heat and humidity to make a reliable air conditioner non-negotiable. Whether you need a new system installed, an existing unit repaired, or routine maintenance before the season starts, our team handles it. When we recommend a new AC system, we factor in your home’s size, budget, and cooling requirements, and our technicians work on all types and brands of equipment.

Heating Services in Walworth

Wisconsin winters place sustained demand on furnaces and heat pumps, and a system that underperforms in January isn’t just uncomfortable. It’s a real problem. H.J. Faust, Inc. provides furnace installation, heat pump repair, and routine heating maintenance to help keep your system running reliably and efficiently through the coldest months of the year.

24/7 Emergency HVAC Service

Heating and cooling failures rarely happen at a convenient time. Our technicians are available around the clock for emergency service calls in Walworth and the surrounding area. Annual Maintenance Agreement holders pay no overtime charges for after-hours calls. It’s one more reason the agreement can often pay for itself.

Commercial HVAC in Walworth, WI

We provide commercial HVAC services for businesses throughout Walworth, including new system installation, commercial heating, commercial cooling, routine maintenance, and repairs. Our goal is to keep your building comfortable and your systems running with as little disruption to your operations as possible.

Indoor Air Quality Solutions

Air quality inside your home or business affects day-to-day comfort in ways that aren’t always obvious. Our team assesses your indoor air quality and recommends targeted solutions, including air purifiers and humidifiers. Humidity control is especially important in Wisconsin, where summer moisture and winter dry air both create distinct challenges for indoor comfort.

Signs Your HVAC System Needs Attention

Not every HVAC problem announces itself clearly. 

Watch for these warning signs:

• Unusual noises: Grinding, banging, or rattling can signal loose parts, motor problems, or component failure
• Uneven temperatures: Inconsistent comfort from room to room may point to airflow issues or declining system performance
• Rising energy bills: A sudden, unexplained increase often means your system is working harder than it should
• Frequent short-cycling: The system switching on and off repeatedly may indicate a thermostat issue, an oversized unit, or another underlying problem

If something about your system seems off, even if it’s not on this list, our inspection-first approach means we can find the actual cause before recommending any repair or replacement.

Schedule Service in Walworth, WI

From routine maintenance to emergency calls, H.J. Faust, Inc. is ready to help Walworth homeowners and businesses with dependable HVAC services backed by decades of experience and NATE-certified technicians.

Call us at (262) 418-0700 or reach out online to schedule service today.