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ABOUT US

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Our family-owned business makes your comfort our top priority. We have a combined experience of 30 years in the HVAC field. At All-Phase Heating, Cooling, and Geothermal, we focus on peace of mind. That's why we offer American Standard, Lennox, and Coleman brands of furnaces and air conditioners. We offer high-efficiency boilers, mini-splits, and geothermal systems as well! Equipment comes with 15-year parts and a 10-year labor warranty, so you can relax knowing you'll be comfortable all year long for years to come! Did we mention that we also offer whole-home duct AND dryer vent cleaning?

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Whether you need a repair to your current system or an upgrade to a brand new system, All-Phase has you covered! We proudly serve Fond du Lac, Dodge, Columbia, and Green Lake counties. Give us a call and let our family take care of yours!

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We Offer Financing

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HEATING

We provide high-quality heating system repair, maintenance and installation that will stand the test of time. 

GEOTHERMAL

Free and renewable energy providing the most efficient and cost-effective heating and cooling available

SERVICES

COOLING

Our certified technicians will keep you cool all summer long. Talk to us about AC repair or replacement!

BOILERS

Modern, high-efficiency boilers can not only help trim your energy costs but increase your overall comfort.

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