Best HVAC Companies in Plymouth, MI (2026)

Based in Livonia, next to Plymouth, Crain Heating and Cooling serves Plymouth and residential customers across Southeast Michigan. The company repairs and replaces furnaces, installs and maintains air conditioning, and sells air purification and filtration systems. Maintenance plans are available, and the website mentions financing and a warranty. Reviewers mention technicians who explain the issue, lay out options and give a plan for the future. Others describe new furnace and AC installs where the crew arrived on time, worked through the day and walked them through each system. One reviewer notes that pipe rerouting during a replacement was neatly done.

Superior Comfort Heating.Cooling is in Livonia, next to Plymouth, and serves Plymouth homes. Furnace installation, repair and maintenance are main services, along with AC repair and installation. The company also handles thermostats, humidifiers, air purifiers and generators. The website mentions same-day service, financing, a warranty and its licensing. Reviewers describe technicians who explain what they are doing, share readings from the system and clean up debris around outdoor units. One describes a broken air conditioner fixed about two hours after calling on a hot day. Others mention crews who were on time, polite and wore shoe covers inside the house.

For Plymouth homeowners, MDI Comfort Systems, Inc. works out of Livonia, next to Plymouth, and serves Plymouth homes. The company covers furnace repair, air conditioning, heat pumps, HVAC installation and indoor air quality, with maintenance plans listed on its website. The site also mentions its licensing and a warranty. Reviewers mention fast responses when a furnace or AC fails, including the owner arriving within hours and a new furnace installed early the next day. A remodeling contractor describes steady communication and phone calls that always get answered. Another reviewer describes a full replacement of furnace, AC and ductwork finished quickly after a difficult renovation.

Colonial Heating & Cooling is in Plymouth and handles heating, cooling and indoor air quality for homes and businesses. Furnaces, boilers, heat pumps and air conditioners are all on the service list, along with thermostats, air purifiers and whole-home dehumidifiers. An energy savings agreement covers ongoing maintenance, and the website lists 24/7 emergency repairs, generators and a warranty. Reviewers mention installers who were knowledgeable and polite, cleaned up, hauled away old equipment and left working AC overnight during a two-day install. Others describe a technician who explained the problem and checked everything before leaving, and an office that kept the process organized.

Working from Livonia, next to Plymouth, Airtech Mechanical Heating & Cooling serves Plymouth homes and businesses. Its heating work covers furnace repair, maintenance and installation, plus boilers and heat pumps. On the cooling side, it offers AC repair, tune-ups and installation, along with indoor air quality and commercial HVAC. The website also mentions financing. Reviewers mention technicians who track down problems quickly, including one that other companies had missed. Others describe a morning call answered with a fix by noon, thorough annual maintenance visits and tips for keeping a furnace and air conditioner running efficiently. A whole home system install is described as clean and punctual.

If you are weighing a furnace or AC replacement, Cappy Heating & Air Conditioning, Inc. is in Livonia, next to Plymouth, and serves Plymouth homes and businesses. The company installs and services furnaces, air conditioning and ductwork, and handles indoor air quality. Reviewers mention installs completed in one day, crews that left the house clean and new systems that run more quietly and hold temperature better. One reviewer says the company's price beat two other quotes. Others describe a technician who stepped in to help on a hot day, and a team that worked with the manufacturer to diagnose a heating and cooling issue over several visits.

Located in Plymouth, Horton Plumbing, Heating, Cooling, & Remodeling works on homes and businesses across Southeast Michigan. Heating service covers furnaces, boilers and heat pumps, and the company also handles cooling and air quality. Maintenance plans are offered, and the website lists 24/7 emergency service and its licensing. Reviewers mention a technician arriving within about half an hour of an evening call for a frozen, broken pipe. Others describe drain visits where the technician explained the cause and how to prevent it from happening again. Longtime customers say they have used the company with success over the years.