When my Ac stopped blowing cool air at the start of the summer, I found this company and Justin…read morequickly diagnosed the problem with my air conditioner, replaced the faulty voltage stabilizer, and recharged the system with new coolant. The AC is now blowing cold again and working great. Justin was very professional, explained everything clearly, and completed the work efficiently. I really appreciated his honesty and the quality of the service. I had a great experience with this company and would definitely recommend them. Thanks again for getting our home cool and comfortable again !

!!PLEASE READ FIRST!!…read more I should have shopped around instead of rushing into hiring this company, that's my biggest mistake. I recently had a new washer and dryer installed, and the installer told me my water valves were leaking and needed to be replaced. This was the first company I called because of their high number of reviews, which I now regret trusting. The price I was charged to replace those valves was outrageous--nearly $1,100, and they didn't even bother to repair or replace the sheetrock afterward. For such a basic job, that alone felt excessive. It gets worse. After doing just one load of laundry, my water heater on the second floor started leaking down into the first floor. This had NEVER happened before they worked on my plumbing. I called them immediately, but they couldn't send anyone out until the next day. When a technician finally arrived, I was quoted $4,000 to replace the water heater. That didn't sit right with me, so I decided to get a second opinion. I contacted another company, and the difference was unbelievable. They charged me $2,300 for the same water heater replacement, showed up within an hour of my call, and completed the entire job in about two hours. Out of curiosity, I also asked them what they would have charged to replace the laundry room valves. Their answer? Around $350. So I was charged nearly three times the going rate for a simple repair, and then quoted almost double for the water heater replacement. That's not just overpriced, that feels completely PREDATORY. I strongly recommend getting multiple quotes before hiring anyone, especially this company. I would not use them again and would not recommend them to anyone.

Excellent service from start to finish! The technician was professional, knowledgeable, and very…read morethorough. Everything was explained clearly, and the work was completed efficiently. I highly recommend this HVAC company for their quality service and professionalism! Best value for my buck.

Great speedy response Fareeed from HVAC Masters is the best. Friendly, reliable, and efficient.read more

Fixed my problem the same day I was very pleased. Gabe Hartman was great!! Right now air handles…read moreall my HVAC problems, and i'm very happy with the company.

Jenn is the best... very accommodating... follows through and returns calls with information...she…read moreis the best! Thank you!

Mark did an outstanding job repairing our AC unit! He was professional, knowledgeable, and took the…read moretime to explain everything before getting to work. He diagnosed the problem quickly and had our AC running perfectly in no time. Honest, reliable, and excellent customer service from start to finish. If you need AC repairs, I highly recommend Mark. Thank you for the great work!

Outstanding experience from the beginning to the end with Cozy home services. Mark sold the…read morecomplete HVAC system to us and the team led by Roberto installed it yesterday. Roberto is absolutely amazing. He is not in a hurry to finish the job. He is a craftsman who takes pride in his job. He pays attention to the finer details. Roberto wants the finished job to look professional and he did an outstanding job. His assistant Salvador is also a very knowledgeable. He is quiet, and worked patiently. Zack, who assisted both Roberto and Salvador also worked efficiently. All three were very friendly and very respectful. Overall, great price, great product, good install by the outstanding team finally backed by the COZY GUARANTEE. Thanks home services for the outstanding job.

Excellent service! My air conditioner had an issue during the recent heat wave and Justin, the…read moreowner, made every effort to work with my schedule to come out the next day. His technician Chris, was professional and knowledgeable, and quickly repaired the issue. I highly recommend Renner Heating and Air.

Our 35 year old AC crossed over to the other side this last Tuesday . Chris from Renner came out…read morefirst thing Wednesday morning to repair. Unfortunately, it was beyond repair. Justin (the owner) had quotes to us by that evening for a new complete system. We agreed on a quote and Justin was here with his crew at 8:00 this morning (Friday) to install. The installation went smoothly, with no problems. We appreciate the fact that Justin remained on site throughout the installation. I wanted to commend Justin and his team for their professionalism and courtesy. We are very happy with our results and glad we selected Renner Heating and Air to do the job. We highly recommend them.

After 25 years, my Concord home needed a full HVAC replacement. I did my homework -- four quotes,…read moreverified equipment certifications, asked hard questions about duct sealing, zoning, and equipment sizing before deciding. A-1 answered every question confidently, corrected a spec error in their own quote when I caught it, and put everything in writing before I signed. Install day: Austin, Joey, and Edgar showed up on time. Floors covered, shoes covered, house treated well. Two days -- day one removal and new equipment, day two ductwork and zoning. Heating and cooling tested before they left. Full documentation handed over on the spot. No hidden charges, no surprises, no change orders. Price was mid-range among four quotes, but the warranty structure -- lifetime workmanship, no-lemon guarantee, payment at completion -- made it the best overall package. Still have HERS test-out and city inspection scheduled, but based on every step of this process I'd recommend A-1 without hesitation. Austin, Joey, and Edgar did a great job.

Since A1 upgraded my insulation, converted me to a heat pump and now manages my maintenance plan,…read moreall of their services have been wonderful. They've proactively let me know if parts needed to be replaced. All the technicians, like Roy who was here yesterday for my regular maintenance visit, are incredibly competent, efficient and gracious. Thanks also to Jessica who helped me with scheduling. I feel very well taken care of. Unreserved recommendation.

Simon did a great job helping us understand our plumbing issues was very informative and…read moreknowledgable, professional and nice. We would definitely use Jazz again!

This guy was our hero when our water heater suddenly starting leaking! ‍…read more Excellent response time, service and friendly employees! This was not our first time with Jazz and it won't be our last!

Rendon Heating & Air Let me start by saying, we are 100%…read moresatisfied with the quality of the work, the friendliness of the owner & staff and the quickness the work was able to be completed.The owner David was able to come out, assess the issue with our AC unit and furnace, quickly get us a quote (that was more than reasonable) and get the new unit installed within 2 days. Incredible. Julian & Brendan, their technicians were knowledgeable and really gracious and friendly. I wouldn't hesitate to recommend them and would absolutely use them again if the need arises.

As much as I'd love to support a local business, I would suggest everyone stay away from this…read morecompany. Let me start by sharing our experience. We bought a new home sometime around October 2025 and have a homeowner warranty. When we had an issue with our heater, we contacted the warranty company, and they sent Rendon Heating & Air to our home. Rendon assessed the unit and told us it could not be repaired and needed to be replaced, which our home warranty covered. Rendon came back and installed the new unit. While it seemed like it was working at first, it clearly was not. We were told everything was working properly, and since we are obviously not the subject matter experts, we trusted them. However, we continued to have a strong feeling that something was wrong with the heater. This is a gas heater, and every time we turned it on, instead of starting normally, there was a loud **PUFF** sound that literally sounded like the gas was about to explode. On top of that, it would take forever for the heat to come through, sometimes running for 20 minutes without properly heating the house, and we could smell gas. We contacted the warranty company again, explained the issue, and they sent Rendon back out. We explained everything to the technician. Their answer? The unit was working fine and the PUFF sound was "normal" when the heater starts. Ummm... okay. So we asked, is it also normal for the heater to run for 20 minutes without properly heating the house while we can smell gas? Their quick answer was that we needed to replace the entire unit with **their machine** and move away from the manufacturer's machine. Keep in mind, this was a NEW unit that THEY had just installed. Months passed, and we still had no real resolution. At that point, we decided to bypass the warranty company completely because we did not want them sending Rendon back to our house again. We paid out of pocket and contacted two other heating companies for independent assessments because we wanted multiple second opinions. Sure enough, both companies raised concerns. We were told that the gas line/pipe could be malfunctioning or improperly installed because a gas heater should NOT start with that type of PUFF sound. They also identified concerns with the air and gas flow and told us the installation could create a serious safety hazard. Based on what we were told, we decided to have the gas shut off and not use the heater until the issue is properly resolved. This is the part that makes me angry. We repeatedly told Rendon what was happening, including the puffing sound, lack of heat, and smell of gas, yet we were told everything was "normal." Instead of taking our concerns seriously and thoroughly investigating the problem, their solution was to tell us to replace a practically new unit with another unit from them. And the customer service experience did not make things any better. The lady I spoke with constantly talked over me, would not let me finish explaining the situation, and repeatedly questioned our concerns. She even questioned why we had waited this long to check the heater and why we weren't using it. OMG... why would I turn on the damn heater when it was 80+ degrees outside? And when we did turn it on to test it, we repeatedly reported the same problem and were repeatedly told there was nothing wrong with the unit. The entire experience has been absolutely ridiculous. More importantly, when a customer reports a potential gas issue, it should be taken seriously. We trusted Rendon because they were supposed to be the professionals. After this experience, I personally would not trust them to work on our home again.

I used All Weather Heating and Air to replace my old HVAC a couple years ago. Their price and…read moreservice is what made me choose to use them. Their techs are all very friendly and knowledgeable. I like how they take their time to explain what they are doing and also give tips on how to maintain your HVAC system. This review is for my most recent experience with All Weather. I am a realtor and needed a HVAC inspection ($150), so I call All Weather since I had a great experience with them before for my own HVAC system. Art (Arturo) was assigned to the inspection. An email (with the tech's name and picture) and text was sent when he was on his way which is nice. Art did not rush the inspection and was very thorough. He took time to explain what he was doing and what he was checking for. Also took time to explain what maintenance items needed to be completed. Then provided a thorough report of the maintenance items needed and cost if they were to perform them. Overall, I am very happy with their service and their technicians' knowledge and professionalism.

Ricky was knowledgeable and provided excellent customer service to our air-conditioning service! So…read moreappreciate next day service especially in our Vacaville summer heat. Highly recommend!!

Richard's excellent customer service and integrity have completely won me over. I'll be going to…read morehim for all my HVAC needs from now on. I called because my air conditioner didn't seem to be working. This is the first heat wave of the year. He was able to squeeze me in within 30 minutes of the call since he was right up the street at the time. The problem turned out to be a tripped breaker. Or a breaker that was turned off. Very simple fix. He refused my offer for payment for his time and diagnostic saying he can't charge me for flipping a switch. This is the type of honest company you want to support! Richard saved me a premature $10k+ AC and furnace replacement! When dealing with such a large potential repair or replacement I wanted to get a second opinion. I was told by the first company the entire unit would probably need to be replaced due to the age (20 years) if it's not the refrigerant being low it'll soon to another issue. I'm so glad I contacted Richard's Air Tech! It can be very hard to find a trustworthy business that is not looking to upsell everything. Thank you Richard!

I reached out to Richard at 8pm and he had his son AJ come the next day. We appreciate the last…read moreminute visit! We needed something replaced, he replaced it right then and there. Super friendly, quick, and knowledgeable. AJ was able to answer all our questions and he was so nice! Would definitely recommend them.