Best heating and air conditioning pros near Hayward, CA

"Great. They contacted me right away. It wasn't an emergency but Iti was cold, so they still came first thing on the first business day. The technician explained what he was doing and why the prior repair done by somebody else probably failed. The rate was reasonable. It's been a couple of days and it seems the furnace is working, so everything good so far."

"knowledgeable, professional, prompt and courteous, highly recommend, came out the first day, repaired the next, if hvac issues arise again they will be the ones I call"

"We chose repair of a very old air conditioning unit due to the cost of a new unit. It is working now but we have no guarantee of for how long. Global responded quickly and repaired the unit within hours."

"Air Sharks are very professional and I think they did a good job on installing HP HVAC in our property."

"Jack did a great job and also explained how often the service should be completed based off of the design of our old fireplace."

"Excellent installation On time, knowledgeable and courteous Would absolutely use them again My technician was Alan Orozco"

"Albert Nahman PHC installed new AC and Furnace for my house. I like them for several reasons -- 1. At first Tom explained in detail what equipment I need and how they work, and gave me a reasonable and detailed quote at end of the visit. 2. They offer interest free finance. 3. I got free upgrade for furnace when the original quoted is not available. 4. Their installer did good job, and cleaned up afterward. I highly recommend this company."

"The technician called me right away and was very helpful. The reason why I didn’t hire him was because the part for my stove has been discontinued, so I will have to buy a new one."

"They showed up early, he had the part on his truck he replaced the device in HVAC unit and had me up and running in no time. He was very nice, very kind and very polite."

"These guys are just excellent! I made a few mistakes before I got lucky to find New Millennium HVAC. They were professional from the beginning to the end. Jose did a thorough job, cleaning the dryer vent. It was not a straightforward issue and I was afraid that we’d have to open the wall to cure the blockage. However, Jose was able to fix it. He’s an experienced professional excellent at his job, trustworthy and overall great to deal with. I’m a happy customer for years now and will rely on these guys for any HVAC related issues."