DG
DG is a HVAC provider serving San Jose, CA. Rated 4.9★ with 174 Google reviews. See services, review signals, and request a quote.
HVACSan Jose, CA
On this page
Company overview
- TradeHVAC
- Service areaSan Jose, CA
- Google rating4.9★ (174 reviews)
- Phone(408) 669-3496
- Address1040 Commercial St #104, San Jose, CA 95112, USA
Photos
Photos from DG, Robert Junger, Eric Wang
What customers say
“DG is great to work with, the staff is friendly and knowledgeable. I appreciate that this company values Veterans and provided a military discount for our Mitsubishi Heat Pump system. We have had the …”
“I choice DG after contacting 5-6 installers and obtained 3 quotes to install a heatpump. I was not shopping for price, more concern with their installation procedure and quality of work since the line…”
“Excellent service from DG Heating and Air! Brandon was fantastic - he provided quick, efficient service and gave us straightforward, honest advice. Instead of trying to oversell us, he focused only on…”
“DG is our go-to HVAC company across all of our projects for the past five years. They are the best and their customer service is second to none. Their office is very responsive and rarely do we ever h…”
“I have been dealing with DG Heating and Air Conditioning since the very early days of the company. My furnace and AC system were installed by them. Annual maintenance is provided by them. Every employ…”
Key highlights
Strengths
- Highly rated (4.9★ average)
- Large review volume (174 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 DG offer?
DG provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in San Jose, CA.
What is DG's rating?
DG has a 4.9 out of 5 star rating based on 174 Google reviews.
Is this company licensed in California?
All listed providers have a verified California contractor license at time of publication. You can verify on the Contractors State License Board (CSLB) lookup at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx.
Does DG 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: Contractors State License Board (CSLB) · Company data: verified business records + Google Business profile
Request a quote from DG
Enter your ZIP and we will line up a free estimate alongside other top local pros.
Own or manage this business? Claim this listing to earn a verified-owner badge.