
Serving Corona, CA and surrounding areas
Approved
In business since 2005
Emergency services offered
Warranties offered
"I’ve had so many AC technicians through my house, and I have to say, Carlos Cetz is the best technician I’ver ever had. I’ve had him four times now, and he has solved all my problems no matter how complex, weird, or alarming. Carlos is always so calm, observant, and very, very knowledgeable. The first problem was when I had a lot of water coming out the side of my house. Carlos knew what the problem was and went to my attic. There he saw the drain wasn’t draining. He was able to drain it and found that cement, insulation, and dirt was stopping up the drain. This must have been from the time my house was built. The second problem was a problem I had called many times for and no amount of technicians could figure it out. They would say it was the door rattling, the motor was dirty, or another excuse. But Carlos did a thorough inspection and found one motor needed replacing. When I told him the noise was only on the upstairs unit, he inspected it well and said everything was in working condition. Carlos went out of his way to inspect the room where the noise was coming from. He found it was from one of my light fixtures in my study room that was making the noise due to the vibration. Sure enough he was correct. He tried getting the loose screw out, but it was too deep. I need to call an electrician for this problem, but I am so relieved. This noise was bothering me for a year and a half. I kept hearing it day and night and kept thinking something was going to break in my attic, but now I don’t have to worry about that. Carlos finally solved this annoying mystery, and I am just so grateful! The third problem was a rancid smell coming from my air conditioner vent. Due to my asthma and on-going fires around me, I had the fan going on all day and night and the air conditioner going on and off throughout the day. Carlos was able to explain how the condensation around the air conditioners work and why this situation was happening. Immediately we knew that that’s what happened. Even when I had a hard time understanding the mechanics, Carlos illustrated it so well. Carlos is so smart and a great communicator. He has a presence about him. Whenever I see him, I know my house is in good hands. He always uses a shoe cover when coming into my house, pets my barking dog so she isn’t scared anymore, covers my clothes with sheets, cleans the insulation that fell from the attic, and explains clearing what he did to solve the issue. The fourth problem was with the motor that was used to blow more air to the room farthest away and over the garage. The room gets so hot during the summer and cold during the winter. The motor kept failing to blow. Then Carlos had a creative and brilliant idea to connect it directly to the A/C and heater directly. Sorry this is so long, but this survey is way overdue and covers 4 different services. To sum up, Carlos is the best technician I have ever met. Thank you On-time Air for having caring and knowledgeable technicians like Carlos."





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