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Verified record
The Maine HVAC license MS20005063 held by Darin D. Hallett is active on the state registry. On Google, Prompt Plumbing & Heating holds 5 stars from 1 rating.
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No changes recorded yet — last scanned Oct 30, 2026.
Typical Maine range for this kind of work, from regional averages — not a quote from Prompt Plumbing & Heating. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$4,500 – $10,300
Typical HVAC project around $7,400
21 years in businessNot yet rated
Combi system replaced in one day3.9
Propane conversion3.9