Cobalt Heating & Cooling

4.43 out of 5 . Best

Cobalt Heating & Cooling

Cobalt Heating & Cooling has been proudly serving our San Jose county neighbors for over 28 years. In the age of large corporations, high overhead costs, and automated phone systems; Cobalt has stuck to our roots. When you give us a call you will be greeted by a warm representative, we will come out to your property to address your questions, and charge fair prices.

(408) 227-7573


Category: air conditioning

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5 Star Rated


Nov 8, 2018

Our blower stopped working, Don responded to my call and came over next morning. Instead of replacing the blower, he just changed the failed part. Don really stands for his reputation and I highly recommend him.

-Chi L.

5 Star Rated


Aug 13, 2018

Once again, thank you Don!!! You've always been honest and taken care of my heating and air issues. I sincerely appreciate you're around to help take care of my 20 plus years Heating and AC unit. I hope you're around when I need a replace the unit. Thank you!!

-Dave T.

5 Star Rated


Jul 6, 2018

Prompt, courteous, and efficient. We've called Cobalt Heating & Cooling three times and wouldn't hesitate to call them again!

-John Corbett

5 Star Rated


Jan 26, 2018

Prior to calling a HVAC company, I did a bit of research here on Yelp and read the reviews. Cobalt was local and had great reviews. Our furnace is probably 20+ years old and it has never worked properly. Our previous contractors installed new ducts in the attic and still performance was very weak. Our AC went out last summer and decided to get rid of the ac unit all together. During this winter, it just didn't seem that we were getting any warm airflow and the back rooms remained cold. Don and Chris arrived on time and troubleshooted our heater. Since we didn't have a ac unit, the removed the coil, cleaned the blower and replaced some parts. They did some before and after tests and our system has never worked this efficient in the 17+ years we have owned our house. It is 1000%+ better! I am so happy we found Cobalt!

-Yolanda I.

1 Star Rated

Very Poor

Dec 6, 2017

Installed new ac instead of fixing. Worst of all, they managed to break our heater. Suggest you stay away from this company.

-Lin Kuang

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