Get matched with top central humidifier installers and replacers in Sand Lake, 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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"Getting the cost estimate and doing the actual work went very quickly and efficiently. The installation looks fine.But then there was a month-long delay in then getting the final paperwork to me, which included the information on how to arrange for the building inspector to come out. But the work did pass the inspection, which was good.
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"I highly recommend Shane Diffin from Mid Michigan Duct Cleaning. He immediately responded to my request and did the work the next day. He sent a video while he was on the job as I was unable to be home. Easy and reasonable payment available through Venmo."

"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."

"Our A/C stopped functioning. They removed dust and debris from the coils in the 'inside' unit. They also cleaned the drainage hose that took condensation out. Unfortunately, they missed an overflow tray which filled up a few days later, overflowing above the ceiling of our living room. It soaked the plaster. We are still getting bids to fix it, but the bids are hovering in the ~$500-$700 range. VanderHyde was apologetic and fixed the problem promptly when notified, but the damage had been done. I think it was an honest oversight. But that oversight doubled the cost of the repair. I would still use them again.
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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."