Cornerstone Services
Cornerstone Services is a HVAC provider serving Graniteville, NY. Rated 4.9★ with 479 Google reviews. See services, review signals, and request a quote.
HVACGraniteville, NY
On this page
Company overview
- TradeHVAC
- Service areaGraniteville, NY
- Google rating4.9★ (479 reviews)
- Phone(315) 353-4515
- Address32 S Main St, Norwood, NY 13668, USA
Services offered
- installation
- repair
- emergency
Photos
Photos from Cornerstone Services, John Quinn, Michael Gokey
What customers say
“Cornerstone staff when called were prompt courteous. When our furnace was out, they provided space heaters. The installers,Bill and Liam were very knowledgeable, Hard-working, Kind, helpful, pleasant,…”
“Cornerstone was amazing! We had issues with our heat, our bedroom was 80 degrees and the rest of the house was 68. They came and identified the issue, presented a solution and finished in a timely man…”
“My furnace went out on a 1° night, and they sent someone out check it at 2:30 a.m. They sent a tech — Russell — back at 9 a.m. to fix it, and he had it running in about 10 minutes. He was polite and i…”
“The installation of my new furnace was a positive experience. Thanks to Tom Sochia, Sales Manager, for locating a compatable unit available. Thanks to Nate and Derrick the technicians that installed t…”
“I contacted Cornerstone when our furnace stopped working. Luke showed up that afternoon and, after thoroughly examining our system, shared that our furnace had several issues. Tom provided us with a d…”
Key highlights
Strengths
- Highly rated (4.9★ average)
- Large review volume (479 reviews)
Things to ask
- Confirm availability for your area and timeline
- Ask about warranty terms on parts and labor
- Request a written estimate before work begins
- Ask about payment plans or financing
Explore nearby research
Frequently Asked Questions
What services does Cornerstone Services offer?
Cornerstone Services provides: installation, repair, emergency. They serve residential and commercial customers in Graniteville, NY.
What is Cornerstone Services's rating?
Cornerstone Services has a 4.9 out of 5 star rating based on 479 Google reviews.
Is this company licensed in New York?
All listed providers have a verified New York contractor license at time of publication. You can verify on the New York Department of State (consumer protection) plus local licensing (NYC DCWP, county Consumer Affairs) lookup at https://a858-elpaco.nyc.gov/CitizenAccess/.
Does Cornerstone Services offer emergency service?
Contact them directly to ask about emergency availability and after-hours service.
How do I request a quote?
Use the CTA below to submit your ZIP. You can message this company alongside two or three other local pros for easy comparison.
Licensing verified 2026-04-22. Reviews refreshed 2026-04-22.
Licensing data: New York Department of State (consumer protection) plus local licensing (NYC DCWP, county Consumer Affairs) · Company data: verified business records + Google Business profile
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