Best Heating & Air Conditioning / HVAC In Covina

“Mike and his staff always provide great service. Very professional and always make sure everything is working as it should be before leaving the job site. Company will do a follow up call to see how everything is working. Highly recommend them.“

“Sinclair Air Systems has been our go-to for years. They are the absolute best! When we have temperatures in excess of 100° and no a/c, it’s a problem. Sinclair Air is incredibly responsive, professional and efficient from beginning to end. They are thorough in their evaluation, making sure to properly assess and diagnose the issue. They treat their customers like family and it truly makes all the difference.“

“Great service very knowledgeable and friendly, goes beyond the call of duty. A friend of mine recommended Joesph Choy last year when my heater stopped working. My husband passed a few months before so my daughter suggested I get other quotes which I did and Joseph's was the best quote. However, while grieving I couldn't make a decision but I kept Joesph's number, 1. because he was so highly recommended and 2. he was very nice and answered all my questions. Anyway after a year of living in the cold and everyone else trying to talk me into a new A/C and heating unit (which there was nothing wrong with my A/C it works perfectly. Anyway, I got a few more quotes and of course Joesph beat them all so I called him. He ordered the heating unit said it would be there the next day and he'd instal it later that day after the delivery. I have a fine working heater now plus he also ordered me a case of the filters so I wouldn't run out. Like I said beyond the call of duty. He kept everything clean and even swept up when he was all done. This is class A service from beginning to end. I couldn't be any happier and pleased with the outcome, but especially with Joseph Choy and his commitment to excellence.“

“Benito was a star. He was so patient and answered all of my questions very throughly. He went above and beyond!!!!“

“amazing experience with Joziah. really effectively addressed our units problems! very timely and efficient. all in all a great job“

“Dubuni is friendly and knowledgeable. Work was done in reasonable time. Will recommend his work.“

“THESE GUYS ARE GREAT!! Family run company. They work hard and really care about their customers. George installed my new AC unit a few years ago and today David and Rafael showed up to repair an old duct. Such a pleasure to work with this family run company! Thank you.Service: A/C system maintenance“

“Fixed my ac unit for the 250 the fan price saved me about 1200 to 2k. Great guys friendly“