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Northern Temp LLC
Geothermal heating system service4.0
Greenbush, MECardville Rd, Greenbush, ME 04418
Verified record
Marks Precision Plumbing and Heating is a plumbing and heating outfit in Greenbush. A 2025 customer said Mark installed a gas boiler and water heater to replace oil, walked them through the entire process and kept them informed. A Maine plumber license, MS90012744, is active on the state registry in the name of MARK A. PATTI JR.
Mark installed a gas boiler and water heater to replace oil. He walked us through the entire process and kept us well informed. His work is wonderful.
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1 change recorded — last scanned Oct 31, 2026.
Typical Maine range for this kind of work, from regional averages — not a quote from Marks Precision Plumbing and Heating. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$240 – $590
Typical plumbing job around $420
Geothermal heating system service4.0
