Verified record
McDonough's own website lists a service area of Wakefield, Wolfeboro, Milton, Rochester, Dover, Somersworth, Alton, Farmington, Barrington and Portsmouth. In a recent review, a customer says they got service on a weekend and were walked through how to resolve an issue on a video call, which saved their vacation. In a 2025 review, a customer with a mini-split problem said Steve talked them through a quick and easy solution on the phone, without waiting on a service call. In another 2025 review, a customer whose mini split Steve did not install said he came out first thing the next morning, fixed the problem after some troubleshooting, and was polite, professional and reasonably priced. In a 2025 review, a customer said Steve installed two separate units in their house; six months after one of the installs it failed due to a factory defect, and Steve came out and immediately put in a brand new outdoor unit. In a separate 2025 review, a customer said S.D. has installed four Mitsubishi mini-splits in their house, including one of the brand new "Sumo" models, and called him totally honest, a neat worker, with extremely competitive prices.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from McDonough. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$5,000 – $11,400
Typical HVAC project around $8,200
Amazing service on a weekend. Walked me through how to resolve an issue on a video call. Saved our vacation!
I had a problem with my mini-split, and Steve talked me through a quick and easy solution on the phone!!! Here I was panicked, and he calmly helped me without having to wait on a service call or anything. Does this man know his mini-splits and the idiots that own them or WHAT!! Thank you, thank you, thank you!!!!!!
I called Steve when our mini split that he did not install was not working. I told him I had a time constraint. He came right out first thing the next morning. He was polite, professional and fixed the problem after doing some trouble shooting. He was extremely helpful and reasonably priced. I highly recommend Steve for any job!
Steve installed two separate units in my house. 6 months after one of the installs,it failed due to a factory defect. Steve came out and immediately put in a brand new outdoor unit. Couldn't be happier!
S.D. has installed 4 Mitsubishi mine-splits in our house, including one of the brand new "Sumo" models, one step beyond "Hyper Heat". I highly recommend him. Totally honest, a neat worker who takes pride in the quality of his work, very low-key and pleasant to deal with, and...his prices are extremely competitive.
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2 changes recorded — last scanned Sep 30, 2026.
Transparent diagnostics5.0
Broad plumbing and HVAC range5.0
Repeat, years-long customers5.0
Water heater and boiler installs5.0
Two AC technicians out within a few hours5.0