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Verified record
License not state-verified. We could not confirm a current registration in the state registry. Insurance is self-reported. Look up in the official Massachusetts registry ↗
- 3 reviews in the last 6 monthsNo negatives
- 1 work photo
Highlights
- Same-day AC repair — a recent customer was all set within six hours
- A condenser replacement — a recent customer said Mal ran a new line set
- Furnace service — a 2026 customer said Malachy arrived when he said
On a 90-degree day, a recent Google customer's central AC stopped working, and Malachy came to their rescue with a same-day diagnosis and repair. He found a replacement for their fan motor and braved a 140-degree attic, and the customer said they were all set in less than six hours from first contact. Kelliher HVAC Services says on its website that its team handles heating system installation, repair, troubleshooting and annual service, and it carries a 4.9-star Google rating from 58 ratings. In a recent review, a customer whose AC started blowing warm air said Mal diagnosed the leak, replaced the condenser and ran a new line set, completing the work in 1.5 days. A recent customer said the company was responsive and got everything taken care of quickly. A 2026 customer wrote that Malachy came out to service their furnace, showed up when he said he would and gave a thorough explanation of the work that was needed. A 2025 customer said that when they had trouble with their heat, Malachy answered right away, came first thing in the morning and got everything working pretty quickly.
What does heating and cooling work cost in Greater Boston?
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Kelliher Hvac Services. 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
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