Geothermal.contractors

Endless Energy is a Marlborough, Massachusetts-based HVAC, plumbing, and electrical company in business since 1980 with over 10,000 heat pump systems installed across the state. As a member of the Mass Save Heat Pump Installer Network, they are qualified to install ground-source (geothermal) heat pumps and facilitate the Mass Save rebate pathway for GSHP projects — though their primary public-facing marketing emphasizes air-source and ductless mini-split systems. They hold Massachusetts licenses in HVAC (HIC #202202), plumbing (#4926), electrical (#8197 A1), and sheet metal (#934), and carry a Mass Save Home Performance Contractor designation since 2015 as well as Mitsubishi Diamond Contractor status. The company operates out of offices in Marlborough, Needham, and Randolph, serving central and eastern Massachusetts for heating, cooling, plumbing, and electrical work. Verified active operator per goendlessenergy.com (Bundle 4 import 2026-05-28)