HVAC Services in Fontana-on-Geneva Lake

Full-Service Heating & Cooling for Fontana-on-Geneva Lake Homes & Businesses

Since 1978, H.J. Faust, Inc. has served residential and commercial customers across the greater Geneva Lake area, building an install base of more than 20,000 clients along the way. Our technicians are fully licensed, insured, factory-trained, and NATE-certified, so they meet nationally recognized standards in heating, cooling, ventilation, and refrigeration on every call. We’re BBB accredited and have earned an Excellent rating across hundreds of Google reviews, where customers consistently point to our promptness, clear communication, and thorough work.

We serve Fontana-on-Geneva Lake with the full range of HVAC work, from routine maintenance and urgent repairs to complete system installations and design-build projects. And when something goes wrong after hours, we’re available 24/7 so you’re never without help when it matters most.

Ready to schedule service or get answers to your HVAC questions? Call us any time at (262) 418-0700, and we’ll take it from there.

Air Conditioning Repair, Installation & Maintenance

Fontana-on-Geneva Lake summers bring heat and humidity that put real strain on cooling systems. If your AC isn’t keeping up, runs constantly without reaching temperature, makes unfamiliar noises, or causes your energy bill to climb without explanation, those are signals worth acting on before the season peaks. Short cycling, refrigerant leaks, and uneven cooling from room to room are among the most common issues we see, and catching them early can help prevent larger failures down the road.

Our technicians perform a thorough inspection before recommending any solution, and we don’t suggest more than your system actually needs. If repair makes sense, we’ll repair it. If replacement is the better long-term value, we can walk you through your options clearly and honestly. We offer competitive pricing and flexible scheduling for AC repair, installation, and maintenance.

Heating Services for Wisconsin Winters

Wisconsin winters aren’t a comfort question, they’re a safety one. H.J. Faust, Inc. handles the full spectrum of heating work for Fontana-on-Geneva Lake, WI, residents and commercial properties, from single-component repairs to complete system replacements and new construction installations. We install Lennox systems and service all major brands, including Carrier, Daikin, Goodman, Honeywell, Trane, and Bryant.

Furnace Installation & Repair

Furnaces are the most common primary heating system in Wisconsin homes, and keeping one running reliably through a Geneva Lake winter requires skilled hands. We handle installations, repairs, and system upgrades. If your furnace is aging, cycling irregularly, or producing uneven heat, we can diagnose the cause and recommend a straightforward path forward.

Heat Pump Installation & Repair

Heat pumps handle both heating and cooling from a single system, and they’ve become an increasingly practical choice for homeowners weighing energy efficiency. We install and service heat pump systems and can help you determine whether one makes sense for your property.

Boiler Services

Older homes in the Geneva Lake area frequently rely on boiler systems, and those systems require periodic maintenance and timely repairs to stay safe and efficient. Our technicians are experienced with boiler service across multiple brands and configurations.

Indoor Air Quality Services

The same lake that makes Fontana-on-Geneva Lake a desirable address contributes to elevated summer humidity that can work against your indoor environment. High humidity can accelerate mold growth, contribute to structural moisture issues, and make air conditioning work harder. Come winter, the opposite problem surfaces: dry air that leads to respiratory discomfort and static. Humidity control addresses both ends of that range throughout the year.

Beyond humidity, our IAQ services include air filtration and purification to remove dust, pollen, pet dander, and other contaminants from indoor air, as well as radon mitigation. Radon is a colorless, odorless gas that can accumulate in enclosed spaces, and Walworth County homes can carry elevated levels. Testing and mitigation are straightforward steps that help protect the people inside. We serve both residential and commercial customers across all three service areas: humidity control, air purification and filtration, and radon mitigation.

Annual Maintenance Agreement

We recommend one spring check-up for your air conditioning system and one fall check-up for your heating system each year. Catching worn components before peak seasonal demand is one of the most reliable ways to help avoid mid-season breakdowns, keep efficiency up, and extend equipment life. Our Annual Maintenance Agreement includes a furnace check-up and an air conditioner check-up, a 30-point inspection, priority scheduling, no overtime charges for after-hours emergency calls, and a 10% discount on all parts and labor when repairs are needed. For a community that sees meaningful temperature swings in both directions, those benefits add up quickly.

How We Train Our HVAC Technicians

Our mechanics are trained through the state-approved Associated Builders and Contractors (ABC) Apprentice Program, a structured five-year curriculum that combines classroom instruction with hands-on field work under direct Senior Mechanic supervision. It’s how we produce technicians who can handle complex installs and diagnostics, not just routine calls. Beyond that foundation, every field and office employee attends a minimum of four training sessions per year to stay current on new equipment, technologies, and processes.

We’re also a privately held company with genuine roots in the communities we serve. Each year, we participate in the Lennox Feel the Love program, nominating a deserving community member and donating and installing a new heating or cooling system at no cost to them. We also support the Tall Tales Music Festival, the Burlington Turkey Trot benefiting Love, Inc., the Transitional Living Center of Burlington, and local athletic programs, schools, and the Chamber of Commerce. On every job, we recycle all eligible material and dispose of the rest responsibly.

Get in Touch with H.J. Faust, Inc.

Whether you need emergency service tonight or want to schedule a seasonal check-up, we’re ready to help. Our technicians are on call 24/7 for heating and cooling emergencies, and we offer competitive pricing with flexible scheduling options to fit your situation.

Call H.J. Faust, Inc. at (262) 418-0700 to schedule HVAC services in Fontana-on-Geneva Lake, WI, or to get answers before you book.