Heat Pump Repair in Willis, Michigan

Not every HVAC company in Washtenaw County is comfortable with heat pumps, and some will tell a Willis homeowner to replace a unit that needs a defrost sensor. Temprasure is not one of them. We repair air-source heat pumps throughout Willis, MI, we understand the balance point on a dual-fuel system and why it matters for your DTE Energy bill, and we show you what failed before quoting a flat-rate repair. The owner answers the phone, the truck is stocked with defrost boards, sensors and contactors, and Willis is about 18 minutes away from our shop.

Willis houses and what that means for heat pump repair

The typical Willis house is a 1950s–80s ranch on a crawlspace or a shallow block basement, built by a farm family or an auto worker on a piece of split-off land, and heated by a furnace that has been replaced once or twice without anyone enlarging the ductwork. Many of these were originally on fuel oil, and we still find abandoned oil tanks in basements and oil-to-gas conversion furnaces that are long past their design life. The farmhouses along Bunton and Tuttle Hill Roads are 1870s–1920s two-stories with Michigan basements and a forced-air system threaded in after the fact, usually with cold upstairs bedrooms as the result. Scattered 1990s–2010s acreage homes are colonials and ranches on full basements with 80 or 90 percent furnaces, more often propane than natural gas. Manufactured and modular homes are a larger share of the housing here than in the rest of the county, and their package units and small downflow furnaces are a regular part of our work.

The newer subdivisions in Willis have a different heat pump population: standalone units with electric strip backup, often installed by the builder as the cheapest way to meet code. These systems lean hard on the strips when anything goes wrong, and because strip heat still warms the house, the failure is invisible until the DTE Energy bill arrives. We get those calls from Willis, MI in February, after two months of a defrost board or a low charge quietly shifting the load to the strips. The repair is usually straightforward; the money already spent is not recoverable. That is why we also push annual heat pump maintenance for these homes.

Heating calls from Willis come in two waves: the first real cold night in November and whatever stretch of January the polar vortex decides to visit. Both times we are 18 minutes away with ignitors, flame sensors, pressure switches and inducer motors on the truck. The 1950s–80s rural ranches and farmhouses with scattered 2000s builds around Arkona Road area and Tuttle Hill Road south of Willis mostly burn DTE Energy natural gas, and the furnaces in them are old enough that a heat exchanger inspection is part of every visit, not an upsell. Near the Willis Road and Rawsonville Road corner and out toward Rawsonville Road north toward Bemis, we also see high-efficiency furnaces whose exterior vents ice over in a storm, which looks like a dead furnace and is a ten-minute fix.

Local details we plan around in Willis

• DTE gas follows Rawsonville Road and Willis Road through the crossroads, but most side roads are propane-only, and we confirm fuel type before quoting any equipment.
• Spring flooding in crawlspaces near Paint Creek is routine, so we recommend elevating any furnace or water heater that sits below grade.
• All homes are on septic, and high-efficiency furnace condensate needs a neutralizer or a discharge point that does not feed the drain field.
• Willis is as flat as anywhere in Washtenaw County, and drainage is slow enough that ditches and field tiles run most of the spring. Crawlspaces near Paint Creek and along the lower stretches of Bunton Road stay wet into June, and that moisture finds its way into ductwork and furnace cabinets. Winter wind crosses the fields unbroken, and summer brings long humid stretches with little shade outside the old farmstead windbreaks.