Verified record
J.P. Karos Plumbing & Heating, LLC holds an active New Hampshire plumbing licence (MBE2201473) on the state registry. A Massachusetts plumbing licence (4668-PL-C) held by JP Karos Plumbing and Heating is also active on that state's registry. The company's website describes work on plant rooms, food plants and facilities across three states, and says it is run by a master plumber with 21 years in the trade. The service area it lists runs through Merrimack, Haverhill, Methuen, Kittery, Portsmouth and Dover, and the site advertises 24/7 emergency service.
Specializes in
Service area
Languages
No changes recorded yet — last scanned Oct 23, 2026.
Typical New Hampshire range for this kind of work, from regional averages — not a quote from JP KAROS PLUMBING & HEATING. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$240 – $580
Typical plumbing job around $410
Water treatment installs5.0
Prompt repair visits5.0