La Grange HVAC Services

Residential & Commercial Services in La Grange, WI

H.J. Faust, Inc. has been the HVAC contractor of choice for residential and commercial customers across southeastern Wisconsin since 1978. With more than 20,000 clients served and over four decades of hands-on experience, we bring a level of knowledge to La Grange that a newer or higher-volume contractor can’t match. Whether you need a quick repair, a full system replacement, or a design-build project for new construction, we handle the complete scope of heating and cooling work under one roof. We’re a BBB-accredited business and a Lennox Premier Dealer, credentials that reflect the standard we hold ourselves to on every job.

Our tagline is Get Control of Your Comfort, and it guides every call we take, every system we install, and every maintenance visit we make across Walworth County.

Ready to schedule service or get a free estimate for your La Grange home or business? Call us any time at (262) 418-0700. Our technicians are available 24/7.

Heating & Cooling Repair

When a furnace stops producing heat in a Wisconsin winter or an air conditioner fails on a July afternoon, you need a technician who can diagnose the problem accurately and address it properly. Our NATE-certified, factory-trained technicians are fully licensed and insured, and they’re equipped to service furnaces, air conditioners, heat pumps, ductless mini split systems, boilers, and all major brands, including Carrier, Daikin, Goodman, Honeywell, Trane, and Bryant.

Every repair call starts with a thorough inspection. We identify the actual cause of the problem before recommending any solution, and we don’t suggest more work than your system really needs. If you’re noticing signs of trouble, no warm or cool air from vents, unusual rattling or cycling, a discolored pilot light, or a sudden jump in energy bills, contact us before a minor issue becomes a costly failure. Free estimates are available, and our emergency line is staffed around the clock so you’re never left without help when it matters most.

Installation & System Replacement

Not every system can or should be repaired. A unit that’s 10 to 15 years old, breaks down frequently, or struggles to maintain temperature is often a better candidate for replacement than continued repair. When that’s the case, we can walk you through your options honestly, assessing your property, your comfort goals, and your budget before recommending a system. We install Lennox equipment as well as other major brands, and we handle projects of every scale, from single-family home upgrades to new construction and design-build commercial work.

Our assessment-first process means you won’t be oversold on equipment you don’t need. We size and specify systems based on what your space actually requires. Free estimates are available for all installation work. Contact us before committing to a direction, and we can help you make the right call.

What Sets H.J. Faust, Inc. Apart

The difference between an average HVAC contractor and a great one often comes down to how their technicians are trained. Ours go through the state-approved Associated Builders and Contractors (ABC) Apprentice Program, a structured five-year curriculum that pairs classroom instruction with hands-on fieldwork under direct Senior Mechanic supervision. Beyond that foundational training, every field and office employee completes a minimum of four additional training sessions per year to stay current on new equipment, technologies, and processes. That investment in our people shows up on every job.

Customers have noticed. We’ve earned an Excellent rating across hundreds of Google reviews, with consistent feedback about our promptness, clear communication, and thorough work.

Annual Maintenance Agreement:
Our Annual Maintenance Agreement is one of the most practical ways to protect your investment. It includes a furnace check-up, an air conditioner check-up, a 30-point inspection, priority scheduling, no overtime charges for after-hours calls, and a 10% discount on all parts and labor when repairs are needed. We recommend one spring check-up for your cooling system and one fall check-up for your heating system. Staying ahead of problems is often less expensive than reacting to them.

Lennox Feel the Love Program:
Each year, in partnership with Lennox, we nominate a deserving local household, a family facing financial hardship or someone who’s made a real difference in our community, and work with Lennox to donate and install a new system at no cost to the recipient. It’s a program we’re proud to participate in because it connects directly to the work we do every day.

Community Commitment:
We’re a privately held company with real roots in this area. We sponsor the Tall Tales Music Festival, the Burlington Turkey Trot benefiting Love, Inc., and the Transitional Living Center of Burlington, and we support local schools, athletic programs, and the Chamber of Commerce. On every job, we recycle all eligible material and dispose of the rest responsibly.

Get Comfortable. Contact Our La Grange HVAC Techs.

If you’re a La Grange homeowner or business owner looking for HVAC services you can trust, we’d like to be your contractor. Free estimates are available for repairs and installations, and flexible scheduling means we can work around your timeline. Competitive pricing and honest guidance are what we’ve built our reputation on for more than 45 years.

We’re available day or night, including weekends and holidays, so a system failure never leaves you stranded. Reach out online or call us directly to get started.

Call H.J. Faust, Inc. now at (262) 418-0700 to schedule service or request your free estimate for HVAC services in La Grange, WI.