Oleg is professional and knowledgeable. Has been very honest and fair in HVAC issues.read more

Called 8AM and make appointment 9AM. Showed up on time. Discuss and explained rates. Thats a fact…read more Very straight forward guy and TRUSTWORTHY. I FOUND MY AC GUY in brentwood. Don't hesitate to give him a call. THANKS a lot OLEG. and thanks for the extra service (FREE) of checking my other electrical issue.

Great pricing and service. They replaced my furnace and A/C system in one day. I would definitely…read morerecommend!

One of our Mitsubishi split heat pump units sprang a leak. Big Air technician Paul Penrose came…read moreout to fix. I am thoroughly satisfied with the support and in particular Paul's attention to detail and the additional effort he showed in verifying all systems. He spent extra time in explaining the technical details of the system and techniques to get the best performance.

On January 16,2026, I was browsing Yelp and reading every detail of reviews for Heating within…read moreOakley. This company EnerVation caught my attention due to great reviews. I called and spoke to Kristina and made an appointment since our heater would not give heat to the whole house. However, after several hours, it started to heat up. I decided to go ahead with the appt. to check out. The appointment process was very easy and quick. Kristina is such a great help. I called the same day and Bryan came over on the same day. Bryan is the owner and he is the technician too! He has over 30 years experience in this line of business. The first appt. was to perform a maintenance since we purchased the house in Sept 2025. Bryan took several photos but first step that he did was to change the filter of the furnace which is located in the attic and to go there, there is a small box shape entrance located in the ceiling of our walk in closet of our main bedroom. Bryan replaced the filter on the first appt. then took pictures of everything that requires work. Kristina was very helpful in making the second appointment which occurred on the same week to perform the following activities. 1. Replaced the leaking condensate collector box. 2. Added a dedicated secondary transformer and rewire the zone system correctly. 3. Repaired and reinforced the emergency overflow drain pan. 4. Performed a full blower wheel cleaning. See attached photos of before and after work. I highly recommend EnerVation Heating & Air conditioning for their experience, quality of work, service, good communication and price.

Furnace went out and as you know, it's been really cold lately. Had to bundle up the last week…read moretrying to figure out what's going on with our furnace on youtube. I reached out to EnerVation and Kristina responded right away and scheduled us for the next day. Bryan came out and was able to assess the problem. Bryan was very knowledgeable and trustworthy. He worked quickly and efficiently. Before you knew it, we were back up and running. Now I get to walk around my house like I normally do during the year, with shorts and tank top! Lol (that's the island boy in me) Bryan went above and beyond and replaced old parts that the original installer used from the older unit when they installed the newer unit. Mine is a newer unit, and still under warranty so I was wondering why it wasn't running properly. Bryan explained, it wasn't the actual unit, but everything else surrounding the unit, such as the clogged pipes. This caused the water sensors in furnace to go off and shut down the unit. Basically, it was a maintenance issue. Bryan went in with the nitrogen tank and blasted the pipes until it became unclogged. Long story short, without yearly maintenance, even the newer models are subject to failure. EnerVation has a program where you pay a small monthly fee and they come out and handle the maintenance of your furnace and AC twice a year to keep them functioning properly. We're definitely going to sign up for that. It's certainly worth it. Nobody has $10-20k sitting around for a new furnace or AC system if the current ones take a dive. Thanks again Kristina and Bryan. I definitely recommend this local business!

After getting several quotes for replacing my home's heating and cooling system, I chose Cali HVAC…read moreto install a new Carrier system, and I'm very glad I did. From the beginning, Daniel and his team were professional, honest, and easy to work with. They arrived exactly on time, and it was obvious they had a great deal of experience. The installation was done carefully, and the workmanship was excellent. What impressed me the most was that Daniel always did what he promised. He patiently answered my questions, was willing to help whenever I had concerns, and never made me feel rushed. Everyone on the team was polite, respectful, and took great care to protect my home during the installation. It's refreshing to work with a contractor who truly cares about quality and customer satisfaction. I highly recommend Daniel and the entire Cali HVAC team to anyone looking for reliable, skilled, and trustworthy HVAC professionals. They definitely earned my 5-star rating!

I had to place my HVAC system and most bids were astronomical! I'd had the same system since the…read morehouse was built in 1988. Cali HVAC's staff Daniel was honest and understood I didn't want to go into deep debt by overpaying for this critical service. He was thoughtful, honest and realistic. Highly recommend their professional team and easy financing program.

These guys spun off as the residential side of Cold Craft which I've used for users. They were…read moregreat, really professional, friendly, prompt and fixed my problem super quickly. They were able to come over quickly and as the HVAC part was in stock came the next morning to install and was done in less than 1 hour. They worked clean and were mindful of our property. Definitely recommend this company!

I was having Chuck come out for a quote for a new system. He took a look at my old system and said…read moreit probably just needs a capacitor. He fixed it right up! Didn't try to sell me on a new unit or pressure me into doing unnecessary stuff. Very knowledgable about HVAC and took the time to explain things ! Would def use him again !

Michael and team great job !!!…read more Manny and Darwin professional, great communication, explained everything to me and how to run the air conditioner/ heating system. Installed flawless.... And this was a difficult job. They took on the job and did a fantastic job. On time to the job site. Friendly guys. Absolutely recommend them for your needs. Get a quote or service. Thank you again Michael, Robert, Manny and Darwin.

Requested diagnostic and repair of a/c not working. Paul came over and fixed it in short order. I…read morerecommend Refresh for yelpers who need quick service.

I needed to get my HVAC system replaced for my house, so I sent out a couple of requests via Yelp…read morefor quotes from highly rated service providers in the surrounding area. Paul, the owner from MechPros HVAC came over the weekend to do the assessment and consultation. It was very helpful be able to do it over the weekend so I didn't have to take time off from work. He was on time, communicated well, and very thorough. Among the half a dozen vendors I contacted, he was among the few that truly listened to my input instead of trying to upsell or push options I wasn't interested in. After comparing all the quotes, MechPros' quote was very competitive. I decided to go with them and scheduled the job which was able to start quickly in about a week after signing the contract. On the scheduled day, Will and Kieran, the two installation crew members, arrived right on time. They were courteous, personable, and professional, and did a good job. They kept the job site clean and neat with drop clothes with minimum disruption. After two days of work, the installation was done. They cleaned up nicely, took away all the disposable materials, and restored everything back to where things were. The installation job was done very neatly in the attic and backyard. I can tell they are proud of their work too. The new system is much better than the system it replaced. After the system started up, I noticed some issues. Paul was very responsive and sent a technician immediately to check it out. After a repair that wasn't successful, he personally came out and concluded that the issue was related to the equipment. Paul took responsibility and ownership of addressing the equipment problem under warranty with the manufacturer. He sped up the resolution by fronting the cost of providing replacement components and dealing with the warranty replacement parts separately to reduce the system down time. I appreciate MechPros HVAC and Paul for taking ownership and having customer service as a top priority. After the problem was resolved, MechPros also helped coordinate the city inspection to secure the final permit approval. I would not hesitate to recommend MechPros HVAC for anyone who needs HVAC system services.

Paul was amazing, super professional and on time handled the problem with ease.I would recommend…read moremechPros to anyone.

My experience with Air Synergy was great from start to end! The appointment setter was very helpful…read moreand able to schedule me an appointment right away. Shaun was my service technician. He was punctual and very thorough in explaining the diagnostic of my air conditioner's issue and the needed repairs. He quickly fixed the leak that was found, and made sure that all was running right with my AC system. He answered all of my questions in a kind and patient manner and provided helpful recommendations for the maintenance of my system. I highly recommend Air Synergy.

Didn't show up or call for our scheduled appointment…read more Their loss as we're looking for a reputable company to replace our 2 HVACs with 2 new systems including 2 heat pumps.