HVAC reviews in Hayward, California

Michael was able to accept the weekend appointment. He diagnosed and found an electrical issue and was able to fix it the same day. Recommend.

We got a same day appointment after contacting them through email. He listened to our concerns and resolved it. It is fantastic to have our house nice and cool

They showed on time and fixed my AC. All necessary part were in their car. The technician was polite, extremely professional and knowledgeable. Thank you for the wonderful experience.

Admirable service. Our office central AC stopped working. Despite the heat wave and extreme workload they could service it quickly. They made our office habitable again.

Excellent service. The seventh HVAC company looked at my malfunctioning Mitsubishi mini split system. They were the only ones who were able to correctly diagnose it and fix the problem. Thank you very much!

Swift response. I Booked an appointment on a Saturday evening. They showed up on Sunday on time! Finding someone who works on weekends was a challenge. They were fast and convenient—great company to deal with.

I performed a check-up on the selling house before the sale inspection to avoid delays and ensure the new owner had a proper system. They found minor code violations and fixed them. Inspection was passed successfully

I called for a second opinion on a unit installed early by another company, and I was having constant issues with it. The company tech inspected the install and found some code violations. After I complained about it to my first company, they agreed to partially refund me, which I used towards getting my unit up to code; I haven’t had any issues.

Michael was marvelous. His response was immediate, and he found the issue immediately. He was considerate and spent some time explaining what needed to be done. Even though I thought I knew nothing about HVAC systems, his explanation was highly appreciated. I will call them again.

This company did an excellent job. 👍
There were the only company that spoke openly and explained all process. Nice, friendly and clean. We ended up installing a multi split system with them for the whole house. They are definitely competent at their business.
Keep doing this.💪

I like it when the tech explains what is happening. In this case, I will be less likely to be ripped off. Clean Sky exceeded my expectations. They explained what happened, showed me how much the part cost on their provider's website, and I accepted the repairs. Very transparent and honest company.

Our old furnace made an extremely loud noise when we used it, so loud that we had to turn it off for the night. After the inspection, they found out that our motor was unbalanced due to a lack of maintenance. They balanced it and even adjusted its speed, so the only sound it makes now is a whispering airflow. Thank you.

I have already used The Clean Sky services twice, for my parent's house and for myself. Both times, it was the same high-end service and communication. They always tried to do all the processes very comfortably for me.

My relatively new AC gave up when it was over 110 degrees outside.
The Clean Sky saved me from baking in my own house.
They were fast, reliable, and answered emergency call. Thank you.

The Clean Sky did a fantastic job fixing my AC. They had the part in stock in their storage and returned the same day to fix my unit. Quick and efficient.

They're professionals who did the job as promised and according to their quote. The technicians will answer all your questions and provide all documentation. After the job was done, they gave me a walk-through and explained some important points. After four quotes from different HVAC companies, I picked The Clean Sky as they were the most transparent and could answer all my questions.

We hire them to replace our gas furnace with a heat pump system. The job was done fast and professionally. They answered all our calls almost immediately and answered all questions. After they finished, everything worked as intended, and they cleaned after themselves.

A/C wasn't working on the weekend and after some unsuccessful calls I got a hold of Clean Sky tech.
They gave me 3 hours widow and the tech arrived quickly after that
They were fast and efficient. Will save their number.

After we returned home from vacation, our AC did not work. It was late at night, but I was able to reach the representative. We explained that we don't hand heat well, and with a small extra, the tech could come to us within the next hour. It was a minor issue that was fixed quickly.

Our air conditioner was working intermittently, and I contacted this company and got my system repaired in under 24 hours! Everyone I talked to was attentive and convenient, and they walked me through the entire process. I would recommend them.

Our air conditioner was extremely loud; the whole family couldn't sleep. The Clean Sky HVAC tester is over 70 dB. We replaced the compressor and did maintenance, and now it is in a low 40, and we can use our AC at night.