· Hyannis, MA · Hyannis, MA
Verified record
Timothy J O'brien is an HVAC contractor based in Hyannis, MA. His Massachusetts HVAC licence, 7451-SM-M1, is active on the state registry. BuildZoom shows 18 projects for him.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Timothy J O'brien. 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
Specializes in
Languages
No changes recorded yet — last scanned Sep 27, 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
