About Cornerstone HVAC
Cornerstone HVAC is an established locally-owned hvac contractor serving homeowners across Boston, MA since 1989. Services include central AC and furnace install and repair, heat pump conversions, ductless mini-split installs, ductwork design and replacement, indoor air quality systems, and the increasingly popular spring/fall maintenance plans that keep manufacturer warranties intact. The technicians on staff carry NATE certifications and are happy to walk customers through a Manual J load calculation before quoting any system replacement, so you never end up with an oversized or undersized system.
Cornerstone HVAC serves homeowners across Boston, MA and surrounding ZIP codes including 02108, 02115, 02125, 02127, 02130. Pricing is up-front and quoted in writing before any work begins, with no obligation if the estimate isn't right for your project.
Services offered
- Manufacturer warranty work
- Heat pump conversion
- Commercial RTU service
- Refrigerant leak detection
- Ductwork design & sealing
- Indoor air quality systems
Service area
Cornerstone HVAC covers Boston and the surrounding metro, typically responding to addresses within 25–35 miles of 02127. Same-day appointments are commonly available for non-emergency requests booked before noon, and 24/7 emergency dispatch is offered for active leaks, electrical hazards, no-heat/no-cool calls, and lockouts when applicable.
Licensing & insurance
FixNearMe verifies that Cornerstone HVAC holds an active MA contractor license (#MA-596658) and carries general liability insurance covering work at residential properties. We re-verify licensing annually and remove any pro whose status lapses or whose review pattern deteriorates.
How to request a quote
Use the free quote form on this page to send your job details directly to Cornerstone HVAC and up to two other nearby hvac pros in Boston. You'll receive up-front written quotes — usually within an hour during business hours — so you can compare apples to apples before booking.