New Home HVAC Inspection in Willis, Michigan
Willis is about 18 minutes from our shop in Ypsilanti. A general home inspector turns the furnace on and notes that it ran. We open it, test it, read the heat exchanger and the refrigerant charge, and tell you what you are actually buying before the contingency expires.
A pre-purchase HVAC inspection in Willis from Temprasure is the same instrument-based look we give our own customers' systems, applied to a house you are about to buy. We decode the serial numbers for real ages, inspect the heat exchanger, measure combustion and carbon monoxide, test the air conditioner under load when the weather allows, check the water heater and its venting, and walk the basement and attic ducts of the 1950s–80s rural ranches and farmhouses with scattered 2000s builds homes common in Rawsonville Road north toward Bemis. The report flags safety items first, describes what each system is likely to need, and gives you what you need to ask the seller for a credit or a repair in Washtenaw County.
Willis houses and what that means for pre-purchase inspection
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.
New construction in the subdivisions around Willis benefits from an inspection as much as the older stock. Builder installs in Washtenaw County are done quickly and commissioned rarely, and a new system in Rawsonville Road north toward Bemis can have a refrigerant charge set by pressure alone, a condensate trap that was never primed, flex duct crushed by other trades in the attic and a furnace left on the default blower speed. All of that is a warranty conversation the buyer wants to have before the builder's final walkthrough, not after the first summer. We test the new system the way we commission our own installs and put the findings in a report you can hand the builder.
Willis is 10 miles from our shop, which is close enough that a maintenance visit or an inspection fits easily into a route and far enough that we schedule it rather than squeeze it in. The 1950s–80s rural ranches and farmhouses with scattered 2000s builds near Hitchingham Road area and Tuttle Hill Road south of Willis are exactly the homes where a twice-a-year tune-up pays for itself: furnaces on DTE Energy that have never had the flame sensor cleaned, air conditioners near Lincoln Consolidated Schools campus with capacitors drifting out of tolerance, and water heaters that have not been flushed since they were installed. We catch those before they become a January phone call.
Local details we plan around in Willis
- Private wells supply every home, and the water is hard with iron and sometimes sulfur, which eats water heater anodes and leaves sediment that needs flushing.
- Spring flooding in crawlspaces near Paint Creek is routine, so we recommend elevating any furnace or water heater that sits below grade.
- Abandoned fuel-oil tanks and oil-era chimneys are common in the older ranches, and venting a new gas furnace into one of those chimneys often requires a liner.
- 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.
What Willis homeowners call about
You are waiving or shortening the inspection
In a competitive Ann Arbor or Saline bid, a focused HVAC inspection can be done fast and gives you the most expensive piece of information in the house even when the general inspection is abbreviated.
House was a rental or a flip
Deferred maintenance is normal in rentals, and flips often get a new thermostat and a cleaned furnace cabinet in front of equipment that was never serviced.
Rooms felt uneven during the showing
A cold upstairs or a warm back bedroom in a quick walkthrough points to ductwork, and duct problems are not something a general inspector evaluates.

Covered on a Willis visit
- Furnace age, model identification and heat exchanger inspection
- Flame sensor, ignitor, inducer, pressure switch and limit operation
- Evaporator coil, condensate drain, pan and float switch condition
- Thermostat function and wiring, humidifier condition
- Written buyer's report with photos, delivered within a day
- Gas pressure, temperature rise and static pressure measurements
How a pre-purchase inspection call works
Book inside the contingency window
Call or text with the address and the deadline. We coordinate access with your agent or the listing agent and schedule within days, often sooner.
Age, condition and permit history
Serial numbers decoded for manufacture dates, equipment matched against what the listing claims, and township permit records checked where they are available online.
Call to walk through it
We go through the report with you by phone so you can decide what to ask the seller for. If you buy the house, the report becomes its service history with us.
Reviews from nearby homeowners
★★★★★Temprasure is one of the best-managed companies I've ever come into contact with. Not only did Al do a great job but he did so in a timely manner. He worked as if it was his home in need. I would recommend him to anyone who has heating and cooling needs.
Pre-Purchase Inspection questions from Willis
Can you test the AC if it is cold out?
Not under load below about 60 degrees. We inspect the condenser, coil, electrical and age, and the report lists what could not be verified so you can ask the seller for a credit or a spring test.
What problems are common in 1950s–80s rural ranches and farmhouses with scattered 2000s builds houses in Rawsonville Road north toward Bemis?
Orphaned water heaters on oversized chimneys after a furnace upgrade, panned joist returns pulling basement air, rust on heat exchangers in damp basements, and R-22 air conditioners with slow leaks.
Will you sell me a new system based on the inspection?
No. The report describes condition and likely needs. If the equipment in the Willis house is old but sound, it says so. Replacement estimates are free if you buy the house and want one.
Do you check permit history in Washtenaw County?
Where the township or city has records online, yes. An unpermitted furnace or AC replacement in 48191 is worth knowing about before closing.
What do you check that the home inspector did not?
The heat exchanger, combustion and carbon monoxide readings, refrigerant charge by superheat and subcooling, capacitor and contactor condition, water heater venting and draft, and the ductwork in the basement and attic of Willis homes.
Serving every part of Willis
If you are under contract on a house in Willis, the furnace and air conditioner deserve more than the three minutes a general inspector gives them, because they are the most expensive things in the house that can fail. Call or text Temprasure at (313) 701-9471 with the address and your inspection deadline, and we will coordinate access with your agent, test everything that can be tested, and have a buyer's report in your hands before the contingency expires.
Neighborhoods and areas we run to regularly: Rawsonville Road north toward Bemis, Willis Road east toward Sumpter, the Willis crossroads at Willis and Rawsonville Roads, Hitchingham Road area, Arkona Road area, the Augusta-Sumpter township line, and the rest of Willis.
More in Willis
Pre-Purchase Inspection nearby
New Home HVAC Inspection in Willis, quoted before we start
Call or text (313) 701-9471. Willis is a 18-minute run for us and we are open around the clock.