Best Heating & Air Conditioning / HVAC In Sunnyvale

“Second time I've reached out to Grumpy's and based on those two experiences I have no reason to ever call anyone else. David unfortunately was booked for weeks but took the time to walk me through troubleshooting on the phone, identified the problem and solution - all without ever actually seeing the problem in person. He went above and beyond to help despite his packed schedule and I was able to quickly fix it myself under his guidance. Incredible service, great company.“

“We were having trouble with our wall heater, Jim picked up immediately and was able to help us reset it over the phone. Thanks!“

“Excellent, Timely Service! Dan has fixed my Samsung refrigerator, whirlpool washing machine and my Samsung dish washer. He is always consistent, reasonably priced and trustworthy. He comes on time and gets the job done.I am happy with the service he has done and the warranty he provides. I highly recommend giving him a shot if you need a repairman.“

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“Easiest repair experience I’ve ever had!

Called our friend Marianne who manages some properties for us over at Hill & Company and asked her who she uses for heating and cooling (Property Managers always have the best people) and she gave me the number for ATC.

This was a little before Noon. By 1 PM Dylan from ATC was at my door and by 2:30 he was done and we were back up and running. The pice was extremely reasonable too! I couldn’t be happier. This was by far the fastest and easiest repair experience I have ever had.“

“I called Matt in the morning and he had someone here within one hour. It was so efficient and easy. His team is extremely professional and he is an excellent communicator. I can’t believe how quickly and simply everything was handled.“

“Andre is amazing technician. Highly knowledgeable and courteous with great communication. He seems to enjoy all he does and makes it a personal challenge to solve customer problem. He is simply amazing!“