About
Northern Temp LLC is a family-owned HVAC and geothermal contractor based in Charleston, Maine, delivering ground-source heat pump installation and maintenance for residential and commercial clients. The company specializes in geothermal energy systems that harness stable underground temperatures for efficient, eco-friendly heating and cooling. Services include geothermal system installation, regular maintenance plans, emergency repairs, and ground loop and distribution system inspections. Beyond geothermal, Northern Temp offers ductless mini-split systems, central heating and cooling solutions, air quality services, plumbing, and PFAS water testing and treatment. The company provides free consultations, preventative maintenance plans with priority scheduling, and 24/7 emergency service. Operating hours are 7 a.m. to 5 p.m. Reach them at (207) 659-3663 or [email protected]. Verified active operator per northerntemp.com (live site, 2026-05-28) + Yelp listing (Charleston ME, updated September 2025) (Bundle 3 audit 2026-05-28)
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Northern Temp LLC — Charleston, Maine
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