Heat Pump Maintenance in Willis, Michigan

Temprasure maintains every brand of air-source heat pump in Willis, from the dual-fuel systems installed on top of gas furnaces in the 1950s–80s rural ranches and farmhouses with scattered 2000s builds around the Augusta-Sumpter township line to the standalone units with electric backup in the newer 48191 subdivisions. Two visits a year, both instrument-based, both ending with a written report of the readings. The service agreement bundles them with priority scheduling for the January night the unit ices over, and Washtenaw County homeowners on the plan get first pick of fall and spring dates. No parts get replaced that are still in spec.

Willis houses and what that means for heat pump maintenance

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 standalone heat pumps with electric backup strips, and those are the systems where deferred maintenance hurts most. The strips are sized to carry the house if the heat pump fails, and they do, silently. A 48191 homeowner whose defrost sensor drifted in November may not notice anything until the DTE Energy bill in January, because the house stayed warm the whole time on resistance heat. Our fall tune-up for these homes tests the strips and sequencer so they work when needed, and tests the defrost system so they are not needed when they should not be. The report tells you which heat source carried the house during the visit.

Willis winters are long enough that a furnace runs more hours in a year here than an air conditioner runs in five. We maintain and repair the gas furnaces in the 1950s–80s rural ranches and farmhouses with scattered 2000s builds near Paint Creek and the Willis Post Office, the hot-water boilers in the older houses around Hitchingham Road area, and the furnaces in newer subdivisions out toward Rawsonville Road north toward Bemis where builder-grade equipment hits its first real failures around year ten. The shop is 10 miles away, the truck carries the parts that fail, and a heating call in Willis ends with heat on the first visit far more often than not.

Local details we plan around in Willis

• Permits for Willis addresses go through Washtenaw County's building department, and inspections are scheduled on the county's southern-township rotation.
• Spring flooding in crawlspaces near Paint Creek is routine, so we recommend elevating any furnace or water heater that sits below grade.
• 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.
• 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.