Sinclair Air Systems installs new air conditioning and heating air systems, as well as provides repairs and services for older air conditioning and heating units in Southern California. Sinclair Air Systems believes in educating our customers as much as possible. Part of our efforts to educate about heating and air conditioning systems is providing this page, our "Knowledge and Information Center."If there are some terms that, you may be unfamiliar with, visit the glossary. If you are just starting to look at heating or cooling units, or have not shopped for an upgrade in a long time, the FAQ page is a good place to begin. Looking for a deal? Check out the Ads and Specials page to see what discount we are currently honoring. Have a more specific question or are you looking for homeowner tips? The Resources page is full of the best resources on the net. Sinclair Air System's newsletters will be available soon on our website so you can keep up with the latest Sinclair Air News.