Built for New England. Owned by neighbors.
Black Diamond Energy is a Massachusetts heating and cooling company. We install systems that keep homes comfortable through the winter without punishing the utility bill.
We started Black Diamond because Boston deserved better HVAC.
After two decades in the field, our founders kept seeing the same thing: homeowners paying good money for repairs that never addressed the real problem, which was usually an undersized or worn-out system.
We started this company to do it differently. We take the time to size the system correctly, install it cleanly, and leave the house the way we found it.
What we stand for
Efficiency first
We recommend what will actually lower your bills, not what is easiest to sell.
Transparent
Written estimates, a clear scope of work, and no surprise fees.
Easy to work with
We speak plain English, respect your time, and clean up after ourselves.
High standards
We install equipment we would put in our own homes and we stand behind it.
Ready for a home that heats and cools like it should?
Free in-home estimates across Massachusetts, with same-week installs on most systems.