How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 59%99+58.1Reliability 26%99+25.8Value 15%100+15.2Experts Score= 99Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.99SCOREOzone Service
San Jose, CA · Grade ALetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20. · #3Position by Experts Score among all companies we track in this category. of 50 heat pump installation services · 5.0★ from 143 Google reviews
Report card
Percentile vs other heat pump installation services (100 = best)Each factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: value and momentum; weakest: reliability.
Reviews for your job
Customers hired Ozone Service for 8 kinds of job.
Ozone Service for HVAC system repair
Clear ✕All 42 Google reviews tagged “HVAC system repair” · showing 40
Great experience during a heatwave! Ilya arrived right on time, quickly diagnosed the AC issue, and explained that my parts were covered under warranty. He also gave me clear advice on potential future issues with my overall system. Very honest, knowledgeable, and punctual. Highly recommended!
Andrew from ozone came for diagnostic. He was very helpful in explaining everything for us. I would highly recommend ozone.
Called OZONE late Friday night and had Andrew out by 8am Saturday. He diagnosed the failed starting component quickly, had the part on the truck, and had the system running and verified cold before he left. On time, no upselling on a old unit, one-year warranty on the repair. Exactly what you want from a service call. Highly recommend.
On a 90+ day Andrew came out and fixed 12 years old system. Prompt service.
Punctual, thorough in assessment and efficient.
Ozone service helped me with when my outdoor ac unit was running but no air was circulated in the house. They helped replace starter kit and blowout motor. The technician was timely and efficient. They were professional with explaining the root cause and assess system health. Will recommend them for any AC-related issues.
Great experience working with Ozone.
Ilya showed up on time, quickly diagnosed the problems and fixed it promptly.
They got the job done in one day! We appreciate the work.
Quick service, family very happy.
There are many positives things to say about Ozone Service, a few of which are very efficient response, and scheduling turn-around time, clear communication, and explanations of findings, expeditious generation of estimates, friendly, knowledgable team-members, and competitive pricing. Ozone is a solid service…
Very professional, on time with great reputation
The tech was out quickly, was transparent in assessment and costs, and finished the job in a timely and neat manner. We would definitely call them again
This involved an in-depth troubleshooting of the HVAC package unit on the flat roof. Fingers crossed that the assessment of the malfunctioning circuit board was spot on. I will receive the repair estimate and a review of the work quality shortly.
I am satisfied with the work done from Ozone Service, especially since they specialize in the HVAC system I have that needed repairs (heating). Andrew was nice, professional and efficient with the diagnosis and completing the repairs. They also worked with my home warranty company which was great. I would recommend Ozone Service!
Excellent response time to my inquiry. Proficient, knowledgable assessment of the HVAC issue. Clear communication of findings, and prompt submission of estimate with clear breakdown of details.
The service from Ozone was excellent! The work was well planned, and the staff were highly professional throughout the process. Highly recommended!
We have an older HVAC system that recently needed repair under our HWA warranty. Ozone Service did an excellent job diagnosing the problem correctly and providing the necessary documentation to HWA for approval. Once the repair was authorized, they immediately scheduled a technician. Ilya arrived promptly to…
Job was done very professionally
Andrew helped me fix the issue. Well done!
Super quick response and on the spot fix. Very professional technician. Appreciate the service a lot, extremely hassle free. Will use them again in future.
I found them via Yelp, gor an appointment for the next day. Technician explain what was wrong with my system, what’s needed for the fix clearly & finish all work & checks within an hour. Very happy with the service.
We had them reattach a new system after a remodel, and they were done in 2 hours and left the job site immaculate
We started off with some misunderstandings! Konstantin (the owner) reassured me he will fix it! Andrew is the best technician! He came back 6 times and always on time! He had to wait for the parts to be delivered and today he changed the HVAC computer board and with the new valve on my furnace I finally got heat!…
Konstantin was on time, professional and extremely knowledgeable. Concisely provided important information needed to make product selections that are good for me. I will get the quote tonight to make my decision.
Andrew did an excellent job of root causing the problem quickly. Though not fixable easily I got to know the options which really help.
My crew damaged a thermostat wire during an insulation install at a property in Cupertino. Constantine was quick to answer and get a technician to the jobsite within 30 minutes. They also fixed the problem same day! Right before Christmas I couldn’t have asked for better customer service. Will definitely use again in the future.
These guys are great. I’ve recommended ozone to several people and they’ve all been happening as well. Alex really knows what he’s doing - and takes a lot of pride in doing his work right.
I used Ozone service for replacing my old AC/Heating system with new HVAC system. The installation involved dual heat pumps and Air handlers. Right from the initial evaluation to the final installation the work was performed with the highest integrity and professionalism. The other big factor was the cost for the…
This people don't give up until they fix your HAVC. my system is on the older side. Ozone Service was persistent and troubleshoot through all the components of my furnace to fix the problem. i recommend this team.
Really great service from Alex. We had this old metal filter box that got stuck and I can’t get it out. Alex is really prompt in Yelp and punctual. He fixed the issue with very reasonable prices in one visit
I installed Google Nest Thermostat Gen 4 last weekend. Due to my personal mistake that I forgot to turn off the power when installing the device, I got “rh no power” error when setting up the new device. I tried to fix it but I don’t have professional knowledge or equipment. Found the Ozone Service on Yelp and the…
Ozone’s staff were incredibly friendly and professional. They quickly diagnosed and resolved my AC issue the very same day. I appreciated how clearly they explained everything throughout the process, which made me feel informed and confident in the repair. Excellent service from start to finish — highly recommended!
I would recommend this company to my friends. Alex and his helper did a great job installing new dampers in our ducts, and adjusting them to ensure balanced airflow. The estimator who gave me the estimate, Konstantin, was also very nice and helpful. They really demonstrated that they care about the business, and…
Rating only, no written review.
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Price
Bar = middle half of what customers paid · gold mark = category median.
Price verdictsGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.
Jobs customers hired them for
| Job | Reviews | Category typical |
|---|---|---|
| HVAC system repair | 42 | $209–$1.2k |
| Install AC | 16 | $1.6k–$3.7k |
| HVAC system maintenance | 13 | $114–$453 |
| Heating system installation | 12 | $1.4k–$2.4k |
| HVAC duct & vent installation | 7 | $1.6k–$3.2k |
| Heating system repair | 7 | $188–$867 |
| A/C system repair | 4 | $227–$611 |
| Heating system maintenance | 4 | $78–$293 |
