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About Us

Senior & Veteran Discounts

Sometimes our elderly get financially taken advantage of in the HVAC industry . At Sinclair Air Systems, we give a discount to all seniors and Veterans.


Sinclair Air Systems actively participates in our community by providing sponsorship to our local youth sports teams, High school Booster Clubs, Charities, and aids in fundraising for our local Church Programs. Sinclair Air Systems is also a licensed contractor recognized by the City of Covina. The Covina Chamber of Commerce presented Sinclair Air Systems with the Bob Russo Business Award in 2004, recognizing outstanding business practices.

Established in 1980

Sinclair Air Systems is a family-owned and operated HVAC business that takes pride in serving its community and surrounding areas. A majority of our business is generated by word of mouth (referrals) because we take pride in our customer service & ensure quality work specific to your needs. We use integrity when dealing with our patrons, who eventually call us friends.

Going Green

We provide our customers with literature to promote energy-efficient products and offer Residential & Commercial options for Energy Star products. We are glad to provide information to our customers that will help aid in our environment's sustainability and reduce your carbon footprint & bills.

Sinclair Air Systems 721 E. San Bernardino Rd. Covina, Ca 91723 California State Contractors License #724978

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