All-Phase HVAC LLC

We’re a family-owned HVAC team in Waupun, Wisconsin, with 30 years of combined experience. At All-Phase, we make your comfort and peace of mind our top priorities. We proudly serve families throughout Fond du Lac, Dodge, Columbia, and Green Lake counties, taking the time to understand each household’s needs and budget before recommending a system or solution.

Our certified technicians provide heating system repair, maintenance, replacement, and installation. We work on furnaces of every make and model and offer equipment from American Standard, Lennox, and Coleman. Our options also include high-efficiency boilers, mini-split systems, air conditioners, and geothermal systems. Whether your current equipment needs attention or you’re considering a complete upgrade, we can help you find an appropriate solution. We also offer financing options and equipment warranties that include 15-year parts and 10-year labor coverage.

Wisconsin winters demand dependable heating, so we provide furnace cleaning and maintenance to help keep systems ready for cold weather. We also specialize in boiler repair and installation, combining training and experience to deliver first-rate, cost-effective service. Same-day boiler service is available, and we can often have hot water running again within hours. During the summer, we handle air-conditioning repairs and replacements to help keep your home cool and comfortable.

Beyond heating and cooling equipment, we provide whole-home duct cleaning and dryer vent cleaning. Our goal is to keep your family safe, warm, and comfortable throughout the year. When you call All-Phase, you’re inviting our family to take care of yours.