Comfort you can count on,season after season.
Heating, cooling, and air-quality experts serving South Lyon, Novi, and Southeast Michigan with honest, master-level care — for homes and businesses alike.
Licensed & Insured
Master mechanics on every job
24/7 Availability
Emergency repairs, day or night
Honest Pricing
Upfront, transparent quotes
Satisfaction Guaranteed
We stand by our work
A family-run shop with three decades of honest, hands-on craft.
At Alison Mechanical Heating & Cooling, we treat your home like our own. For over 31 years, Dave and our team have kept South Lyon and Novi comfortable — with reliable furnace repairs, careful AC installations, and the kind of personal service that keeps neighbors coming back.
Locally owned and proudly hands-on, we handle everything from emergency no-heat calls to full system replacements — always with upfront pricing and a guarantee we mean.
Read our storyHeating & cooling, done right.
Expert repair, installation, and maintenance for residential and commercial properties throughout Southeast Michigan.
Residential Services
Complete climate comfort solutions for homes across South Lyon, Novi, and Livingston County.
Residential HVAC
Integrated heating, ventilation, and air conditioning precision systems engineered for home comfort.
Commercial HVAC
Engineered commercial rooftop units, chillers, and split systems for retail, offices, and warehouses.
Commercial Services
Full-spectrum mechanical, environmental, and facility air handling services for Michigan businesses.
Furnace Repair & Installs
Fast diagnostics, certified repairs, and flawless installations for gas & electric furnaces.
Furnace Replacement
Upgrade to cutting-edge 96%+ AFUE furnaces that dramatically slash heating bills.
The kind of care you only get from a neighbor.
We take pride in honest, reliable work — and in treating every customer like part of the family. With over 30 years under our belts, that's a promise we keep.
Expertise You Can Trust
Decades of hands-on HVAC installation, repair & maintenance.
Family-Owned & Local
A South Lyon & Novi business that prioritizes its community.
Comprehensive Solutions
From AC installs to furnace repairs — we handle it all.
Satisfaction Guaranteed
We stand by our work until you're completely satisfied.
Kind words from our neighbors.
Over 31 years of honest service in South Lyon, Novi, and Southeast Michigan.
“Alison Mechanical came out within a couple hours of me calling (with no prior customer experience) to fix my furnace on a very cold winter day. The service tech was polite and explained the issue. He also gave me a few tips on some minor fixes to try before having to call for service. Highly recommend!”
“Amazing customer service. Honest and professional. They obviously care about their customers. Bill came to my house on a Saturday to get my furnace running. Probably one of the best service experiences I've ever had. Will definitely call them first for any future furnace issues.”
“In the 20 years I've been having service calls in South Lyon, this was one of the best experiences. Bill was able to work us in for an AC service call, and while here, helped with another water heater issue. I HIGHLY recommend and will be using again.”
Ready for reliable comfort?
Get a free, no-obligation quote from Michigan's trusted HVAC team — we'd love to help.