C2S Energy LLC provides energy efficiency services to Massachusetts homeowners, including no-cost Mass Save inspections, insulation, heat pump installation, mold remediation, roofing, and windows. Based in New Bedford, the company handles projects from inspection through financing to installation in-house. Services include high-efficiency ducted or ductless heat pump systems with available rebates, no-cost weatherization for eligible homes, and certified HERS ratings. The company also offers expert guidance for builders, architects, and developers. Mass Save financing includes loans up to $25,000 over seven years, and eligible customers can receive up to 100% off air sealing and insulation services through participating utility companies including National Grid, Eversource, and Unitil.
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