Grand Traverse County • 20+ Years Experience • Locally Owned • Licensed & Insured • 5.0 on Google
Where We Work
Towns We Serve in Grand Traverse County
Pick your town for local details, from heating fuels to well water.
Traverse City
The county's oldest housing, from lumber-era Victorians to new builds.
Acme
East Bay shoreline, private wells and plenty of second homes.
Williamsburg
Whitewater Township, where propane is the most common heating fuel.
Long Lake Township
Newer homes around Long Lake, many due for a first replacement.
Interlochen
Green Lake Township homes and lake cottages that run on groundwater.
Kingsley
Natural gas in the village, mostly propane out in Paradise Township.
Grawn
Blair Township, with a township water system and gas available throughout.
Fife Lake
An older village, lake cottages and a township that is half state forest.
We also work on the Old Mission Peninsula and across the county's other townships, including East Bay, Garfield, Grant, Mayfield and Union. Not sure we cover your road? Call 231-631-3476 or see our Grand Traverse County page.
Our Services
One Local Team for Heating, Cooling and Plumbing
The same crew handles your furnace, your air conditioning and your water heater.
Heating
Furnace installs, repairs and fall tune-ups for homes across the county.
Air Conditioning
Central air installation, repair and spring maintenance.
Heat Pumps & Mini-Splits
Cold-climate heat pumps and ductless systems for rooms the ducts never reached.
Plumbing
Water heaters, well pumps, water softeners, gas lines and leak detection.
Indoor Air Quality
Humidifiers, air purifiers and UV lights for dry winter air and dust.
Maintenance Plans
Spring and fall tune-ups on one schedule, from $25 a month, with member repair discounts.
Planning a bigger project? Ask about financing through GoodLeap.
Across the County
What Grand Traverse County Homes Have in Common
Not much, and that is the point. Census figures put the county’s median home at 1986, while the Traverse City part of the county sits at 1963 and Long Lake Township at 1994. A furnace job in a century-old house near downtown looks nothing like one in a 2000s build off North Long Lake Road.
Heating fuel changes as you leave town, too. Only about 12% of homes in the county heat with propane, but in Whitewater Township it is about 49%, and roughly two out of three homes in Paradise Township outside Kingsley use it. If you heat with propane or electric baseboard, a cold-climate heat pump is worth pricing. Our article on heat pumps in Northern Michigan winters explains how they hold up.
Much of the county runs on groundwater, through private wells or township and village systems fed by wells. The U.S. Geological Survey reports calcium and bicarbonate as the main minerals in that water, which is what leaves scale in water heaters and on fixtures.
Selling near the water? Since January 1, 2026, the county has required most homes with a well or septic system within 300 feet of a lake, stream or other surface water to have those systems evaluated by a county-certified evaluator before sale.
Reviews
What our customers say
★★★★★
"Beyond impressed! Jason set me up with a schedule to repair an issue caused by another company. They came out, found the issue, repaired their mistake, and got me up and running. They are very professional and obviously know their business. I will highly recommend them to others and they will now be my go-to HVAC people. Thanks for great service and a very fair price."
Kim W., Google review
★★★★★
"The Mammoth Mechanical team is exceptional and was 5-star quality from the start to the finish for our job."
Trent C., Google review
★★★★★
"Their explanation was clear and easy to understand. I had my furnace replaced, and the work was completed efficiently."
Frank B., Google review
Rated 5.0 from 10 Google reviews.
Service area questions
Coverage, wells, home sales and maintenance plans