Sinclair Air Systems
Sinclair Air Systems is a HVAC provider serving La Verne, CA. Rated 4.7★ with 35 Google reviews. See services, review signals, and request a quote.
HVACLa Verne, CA
On this page
Company overview
- TradeHVAC
- Service areaLa Verne, CA
- Google rating4.7★ (35 reviews)
- Phone(626) 331-4541
- Address1935 McKinley Ave Suite D, La Verne, CA 91750, USA
- CSLB License724978 (ACTIVE)
Photos
Photos from Sinclair Air Systems
What customers say
“Sinclair Air Systems installed our Daikin mini-split. Showing up on time as promised, the crew was very professional with precision, knowledge and skills and they even finished in one day while keepin…”
“Sinclair Air Systems did an excellent job installing our new HVAC system. The pricing was fair and the quality of work was top-notch. Professional crew and great results. Would definitely use them aga…”
“Had Sinclair Air Systems install a new HVAC system and couldn't be happier. Fair pricing with no surprises, and the quality of work was outstanding. Professional team, clean installation, and the syst…”
“Sinclair Air Systems installed a mini-split in our ADU last month. Crew showed up on time, did clean work, and finished in one day. They were honest, fair, and knowledgeable. Would use them again.”
“My family and I woke up to a broken AC system, which later became 87 degrees in our home. Our unit is probably 35 years old and Sinclair Air Systems could have easily tried to up sell us. Instead th…”
Key highlights
Strengths
- Highly rated (4.7★ average)
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 Sinclair Air Systems offer?
Sinclair Air Systems provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in La Verne, CA.
What is Sinclair Air Systems's rating?
Sinclair Air Systems has a 4.7 out of 5 star rating based on 35 Google reviews.
Is this company licensed in California?
Yes. License number: 724978. Status: ACTIVE. You can verify on the Contractors State License Board (CSLB) lookup at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx.
Does Sinclair Air Systems 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 2026-04-24. Reviews refreshed 2026-04-24.
Licensing data: Contractors State License Board (CSLB) · Company data: verified business records + Google Business profile
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