Oleg knows exactly what he's doing and provides top notch service. I'm happy to rely on him for all HVAC-related work.
ONzone Heating & Cooling Inc.
Licensed
- 27 hires
- Based in Pleasanton, CA
- 1 years in business
- 3 employees
- Responds in about 5 minutes
- Background checked
- License verified
About ONzone Heating & Cooling Inc.
At Onzone Heating & Cooling, we bring over 24 years of HVAC experience to every project. We service and install residential and commercial heating and cooling systems, providing expert diagnostics, repairs, maintenance, and replacements. Our goal is to solve problems the right way—not simply replace equipment. We take pride in delivering high-quality workmanship, code-compliant installations, honest recommendations, and exceptional customer service. No matter the size or complexity of the job, our team is committed to keeping your home or business comfortable year-round.
Reviews
These professionals performed well in relocating our HVAC return to lessen airflow noise. They were knowledgeable, friendly, punctual, and enthusiastic about the task. I strongly recommend them for HVAC, electrical, or plumbing projects.
They fixed my AC at a lower cost as they provided a fix instead of replacing the whole system.
Two technicians arrived earlier than expected after calling ahead. I was thrilled of course. It's rare that repair folks arrive early. After texting a bunch of HVAC companies these guys were one of few that agreed to do the work. Others said the job was too small. Once they arrived they got right to work. It wasn't a straight forward job so naturally I was concerned. I had nothing to worry about these guys were pros. They were done in less than an hour. I have to say these guys do quality work. They were very meticulous to make sure no air was leaking from my exhaust vent. They checked and rechecked. I was glad that their bread and butter is AC. My unit is on it's last leg. They briefly explained how they would do the work and gave me a ballpark estimate. I will be using these guys in the future. It's a great feeling knowing you have a trustworthy and meticulous technicians when you need them. They will do small jobs as well as large ones. I will gladly recommend them to my friends and family. Thank you Onzone.
10 stars
We had a great experience with ONzone for an A/C issue we were facing. They were quick, professional, and responsive. We highly recommend their services for any HVAC needs!
Services
ONzone Heating & Cooling Inc.★ 5.0
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