Serving Southeast Michigan from the Ohio Line to Flint.

Therma-Tech is based in Milan and runs service calls across a wide corridor of Southeast Michigan, south to the Ohio state line, north through Monroe, Adrian, Jackson, Ann Arbor, and the Detroit Metro area, and up to Flint. If you're somewhere in that range, there's a good chance we can get to you.

A travel fee applies beyond 20 miles from our base in Milan. Not sure if you're in range? Call or text us we'll tell you straight.

  • "Furnace went out on a Wednesday night in January. Called at 8pm half expecting to get a voicemail. He picked up, was there within two hours, and had it running before 11. Didn't charge me a penny extra for the time. That's rare."

    — Kevin in Monroe

  • "Had a new dual fuel system put in last fall. He walked me through exactly what I was getting and why, didn't oversell me, and the install was clean. Heating bills are down noticeably compared to last year."

    — Brenda in Tecumseh

  • "Our walk-in went down on a Friday before a busy weekend. He came out same day, diagnosed it fast, and had us back up before dinner service. Knows commercial equipment cold. Won't use anyone else."

    — Tony in Saline

  • "I'm picky about who I let in my house. He was on time, explained what was wrong without talking down to me, fixed it, and cleaned up after himself. Straightforward guy. Exactly what you want."

    — Sandra in Ann Arbor

Our Service Area

We run calls on a regular basis in the following areas. If your town isn't listed, call us.

  • Tecumseh, Adrian, Blissfield, Dundee, Onsted, Hudson, Britton, Tipton, Palmyra Township, Raisin Township, Madison Township

  • Monroe, Dundee, Milan, Petersburg, Carleton, Ida, Temperance, Lambertville, Erie, Frenchtown Township, Bedford Township

  • Ann Arbor, Ypsilanti, Saline, Milan, Chelsea, Dexter, Manchester, Bridgewater Township, York Township, Augusta Township

  • Jackson, Brooklyn, Cement City, Concord, Napoleon, Spring Arbor, Grass Lake, Leoni Township, Blackman Township

  • Downriver communities, Flat Rock, Rockwood, Trenton, Wyandotte, Southgate, Taylor, Brownstown Township, Huron Township

  • Wixom, Milford, Novi, Farmington Hills

  • Howell, Brighton, Pinkney

Work With Us
  • A utility room with HVAC system and water heater, partially enclosed wooden framing, unfinished ceiling, and a concrete floor.

    Natural Gas Furnace

  • Water Heaters

  • A white Rinnai tankless water heater mounted on a white brick wall, with copper and black pipes connected.

    Tankless Water Heaters

  • An outdoor heat pump unit by Bosch placed on a concrete pad next to a brick wall with a small window.

    Dual Fuel Heat Low Ambient Pumps

  • A Bosch HVAC unit installed in a basement or utility room, with visible pipes and a small white GeneralAire box nearby, standing on a concrete floor.

    Residential HVAC System

  • Rinnai Combi boiler

    Ultra High Efficient Combi Boilers