Franklin HVAC Services

Full-Service HVAC in Franklin, WI for Homeowners & Businesses

H.J. Faust, Inc. has been delivering heating and cooling solutions to residential and commercial customers since 1978. With more than 20,000 clients served and an Excellent rating built on hundreds of Google reviews, we’ve earned the trust of Franklin families through consistent, thorough work. Whether your furnace has stopped mid-January or you’re planning a new system before summer, we bring over four decades of HVAC experience to every call.

We serve Franklin homeowners and light commercial customers with a complete range of HVAC services, from routine tune-ups to full system design-build installations. BBB accredited and backed by NATE-certified technicians, we’re equipped to handle whatever your system needs.

Call (262) 418-0700 to schedule HVAC service in Franklin, WI. We’re available 24/7 for emergencies and offer flexible scheduling for routine appointments.

HVAC Services We Offer in Franklin

We handle every aspect of home comfort, from cooling system installs to indoor air quality upgrades:

• AC installation & replacement
• AC repair
• Heating services
• Mini split installation
• Furnace services
• Heat pump services
• Indoor air quality solutions

Signs Your Heating or Cooling System Needs Attention

Not every HVAC problem announces itself with a full breakdown.

Recognizing early warning signs can help you avoid a more costly repair down the road:

• Strange sounds: Rattling, buzzing, squealing, or grinding can indicate loose components or mechanical wear that needs prompt evaluation.
• Rising utility bills: A sudden increase without a clear cause may mean your system is working harder than it should because of restricted airflow or aging equipment.
• Uneven comfort: Hot and cold spots or an inability to hold the thermostat setting can point to equipment trouble, duct problems, or insulation concerns.
• Short cycling: A unit that turns on and off repeatedly may signal a thermostat issue or a system under strain.
• Air quality changes: Extra dust, musty smells, or lingering odors may indicate a need for filter replacement, duct inspection, or a deeper system review.
• Aging equipment: Systems in the 10- to 15-year range often see more frequent repairs and reduced efficiency compared to current models.

What Sets H.J. Faust, Inc. Apart from Other HVAC Contractors

Our training pipeline is something many HVAC companies don't replicate. Every mechanic at H.J. Faust, Inc. moves through the state-approved Associated Builders & Contractors (ABC) Apprentice Program, a structured five-year curriculum that combines classroom instruction with hands-on field work under direct Senior Mechanic supervision. This isn’t a short certification course. It’s the foundation for the technical depth our customers experience on every visit. All field and office employees also complete a minimum of four training sessions per year to stay current on new equipment and processes.

Our technicians are NATE-certified, meaning they meet the nationally recognized credentialing standard for heating, cooling, ventilation, and refrigeration set by North American Technician Excellence. They’re also fully licensed, insured, and factory-trained. We install Lennox residential systems and service all major brands, including Carrier, Trane, Bryant, Daikin, Goodman, and Honeywell.

Our approach to diagnosis sets the tone for everything. We begin with a thorough inspection before recommending a solution, and we don’t recommend more than your system actually requires. That honest repair-versus-replace guidance is something our hundreds Google reviewers mention regularly.

When heating or cooling fails outside of business hours, our technicians are available around the clock. Emergency HVAC service for Franklin customers is available 24 hours a day, seven days a week. And each year, through the Lennox Feel the Love program, we nominate a deserving household in our community to receive a full heating or cooling system installation at no cost.

Our Annual HVAC Maintenance Agreement

We recommend scheduling a spring tune-up for your air conditioning system and a fall tune-up for your heating system each year. Catching small issues before peak season keeps your equipment running efficiently and can help prevent unexpected breakdowns when demand is highest. Our Annual Maintenance Agreement formalizes that schedule and adds meaningful value on top of it.

Agreement members receive:

• Both a furnace check-up and an air conditioner check-up included annually
• A 30-point inspection covering your system’s key components
• Priority scheduling so you’re not waiting when you need service most
• No overtime charges for after-hours service calls
• A 10% discount on parts and labor whenever repairs are needed

For Franklin homeowners who want consistent care without the guesswork, the Annual Maintenance Agreement is a cost-effective way to protect your investment.

HVAC Installation in Franklin, WI

When it’s time to replace an aging system or install equipment in a new construction project, the quality of the installation matters as much as the equipment itself. We’re a certified Lennox installer, and our team handles system selection based on your home’s size, layout, and efficiency goals, not a one-size-fits-all approach. Every install is performed to manufacturer requirements so your equipment can perform the way it was designed to.

Our scope goes beyond standard residential swaps. We handle design-build projects, system upgrades, new construction, and sheet metal fabrication, giving our customers end-to-end capability from a single contractor. Financing is available for qualifying equipment installations to help make the right system more accessible.

Indoor Air Quality Solutions for Wisconsin Homes

Wisconsin winters keep homes sealed tight for months, and that closed environment can concentrate airborne particles, allergens, and moisture imbalances indoors. Summer brings the opposite challenge: excess humidity that affects both comfort and system performance. H.J. Faust, Inc. offers air purifiers, whole-house humidifiers, and ventilation solutions to address what standard filtration alone often misses. We evaluate your space and recommend IAQ improvements based on what you’re actually experiencing, not a generic checklist.

Schedule HVAC Service in Franklin Today

Whether you need a seasonal tune-up, an urgent repair, or a full system replacement, H.J. Faust, Inc. is ready to help Franklin, WI homeowners and businesses get comfortable and stay that way. Our team is available around the clock for emergencies and can work around your schedule for planned service.

Contact us at (262) 418-0700 today to get started.