Get matched with top central humidifier installers and replacers in Alto, MI

SULLIVAN Heating, Cooling & Plumbing is West Michigan’s most trusted provider for residential HVAC and plumbing services. We specialize in installation, repair, maintenance, and emergency service for furnaces, air conditioners, water heaters, boilers, and plumbing systems. Our certified technicians deliver reliable, energy‑efficient solutions tailored to your home’s needs.\nFrom keeping your family warm through harsh Michigan winters to ensuring cool, dependable comfort in the dog days of summer, our team is here to help. Homeowners choose Sullivan for our fast response times, honest recommendations, quality workmanship, and 5‑star customer care.\nWhen Your Comfort’s in Trouble, Call SULLY on the Double!

I’m a small, local HVAC company with 6 years experience. Licensed and Insured.

"Great service. Fixed the problem in a day or less. Worked at night as well. Am definitely going to use him again.
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"They've maintenanced my furnace before I required a new one and they've always maintenanced the new one since I got it replaced about 3 years ago. Very easy to work with. I think I've been using them since 2008."

"When my old air conditioner started failing, I knew it was going to be a larger project since it was using a discontinued refrigerant. Since the furnace was roughly the same age, getting everything replaced made the most sense to avoid the likelihood of having to redo a bunch of work in a couple of years. I felt comfortable throughout the process of assessment through installation, with any questions I had being expertly and timely handled."

"I was able to reach the owner during his vacation, which surprised me. He was very prompt at visiting the hoiuse and sending a quote for the A/C and Furnace replacement. The work was completed on the date selected and in very little time. I'm impressed. I would eagerly recommend this contractor to anyone."

"The installation went well.  Chris was pleasant, professional and did a very neat job.  They did a thorough cleanup.  I was very happy with the results and would definitely recommend the company.
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"I would highly recommend this company they did a great job, cleaning my air ducts very professional and very good team of workers."

"Technician came to the house and analyzed the problem. It was determined that the cost of repair was over the allowable Choice Home Warranty limit and it should be replaced. Choice Home Warranty issued their replacement cost. This cost was unacceptable and I challenged their figure. After some negotiation I was offered an increased settlement amount. I still balked at their offer but I was told to take it or repair my old microwave. I finally accepted their amount, even though it is still well below what it will cost me to replace the unit. I might add that the existing microwave has the convection feature and I want to replace with same features. The cost that I will receive also does not include any removal, disposal or installation costs. At this time I am debating whether I will continue with Choice Home Warranty or consider other options."

"He removed the old unit, and put in the new unit. A little difficulty getting the old unit out of the wall mount, but he got it out, and aided with the disposal of the old unit."