Top notch in all aspects. - Respect for time/home…read more- Communication - Workmanship - Easy to do business with Came for a leaking sediment filter and ended up fixing all the little things around the house while here: + 2 faucets, 2 sink drains. I would recommend if you want things done correctly and completely.

To our dismay, our 22+ year old AC unit stopped working at the start of a weeklong heatwave. We…read morewere able to secure a next morning appt with Advanced Plumbing, Heating and Air, and Victor came out, assessed the furnace and outside unit, and let us know that it was pretty much kaput (which we expected). Victor provided detailed and thorough information, and showed me all the areas that were broken/corroded and were contributing to the overall dysfunctions. We had had our dryer repaired a few weeks ago by different vendor, and Victor's assessment aligned with that vendor's assessment -- that we were possibly dealing with a full HVAC issue. Victor was able to apply a bandaid fix to hold us over in the heat and scheduled an appointment with Mark, who came to our home later that evening to do a further assessment and to provide us replacement and financing options. We were able to secure an installation appt of the new HVAC system two days later, in which, Bobby and his team came in and took care of. The installation took just under six hours and from what I could tell, went smoothly, though I did feel bad that they were installing the system on a very hot day. But they didn't complain and remained professional and courteous. Overall, we felt well-informed and well taken care of by this company! All the employees we interacted with were professional, personable, laid back, and provided us great, fast, and generous service and care. We ran into some hiccups with financing but Mark helped us iron that out quickly and smoothly. The investment of the new HVAC system was resonable and fit our home goals. I appreciated that we didn't feel upsold to or pressured, and that they took the time to understand our pain points so that we could make the best decision. We're happy with our new HVAC system and are looking forward to seeing the physical and financial benefits of having an up-to-date and more efficient system. Would highly recommend.

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

We had a new unit installed at our old house years ago by Fred. They did a phenomenal job then…read more However this review is from today. I texted Fred yesterday, on a Saturday, because our unit in our new house (Not the one he installed) was having some issues. He came out on a Sunday and fixed it in 30 minutes, and DIDN"T charge us. I am not saying that will always happen, but Fred is stand up guy who stands by his work. Solid guy, he deserves all your HVAC business.

I have had Gabe as a technician from this company on more than one occasion and he is absolutely…read morefabulous. Today he also came with someone named Wyatt, who is fabulous as well. At any rate I've received consistent and professional services from this company. BTW: I also purchased my whole house generator from this company and I've been very happy ever since. I highly recommend them. I guess I should mention why they've been over "so much" and that is because I have them do regular maintenance and service. They know what they're doing and they keep my equipment running beautifully.

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.

I had a great experience with Cozy Homes HVAC! I had a Halo water purification system installed and…read moreconverted my gas furnace to electric. Roberto was the lead technician, and he was absolutely amazing from start to finish. The entire team was professional, knowledgeable, and made me feel very comfortable throughout the process. They took the time to explain everything and made what could have been a stressful project feel easy and seamless. I'm very happy with the work and would absolutely recommend Cozy Homes HVAC to anyone looking for a reliable and professional company. Ask for Roberto! He was fantastic!

We wanted to get a quote for a Mini split for our master bedroom since the regular HVAC didn't cool…read morethat room down enough. We called our regular HVAC servicing company which we'd had for the past 2 yrs. Unfortunately they totally fell short on several things. We ended up calling Cozy Home & Mark showed up on time the next day. He immediately put on booties so he wouldn't get our dark floors all dirty. He had already done his homework on the age and sq. footage of our house, which impressed us. Mark was very knowledgeable about our system as well as the Mitsubishi system we decided to go with. He was able to give us a quote that same day on both a single zone and dual-zone (we wanted the option to cool the living room too). Mark told us that it would only require one day to install the 2 systems, which was a lot quicker then the other company quoted, & the price he quoted us was even $1000 lower. They still had a slot open the next day so we told Mark to set it up. Roberto, Salvador, & Gaio showed up right on time at 8:30am, just as Mark said they would. The guys did a terrific job on the install aside from the dirt/dust. We were going to have them wear booties until we realized it would be way too difficult for them to keep having to take them off when they went outside throughout the day. They brought in a tarp to put down under each unit to catch some of the dust & dirt. We made sure to keep them well hydrated and well fed since they were here from 8:30-5:30pm, and it was 100 degrees that day. All in all the systems work wonderfully, and we wished we'd done this 2 years ago. We were so happy with the company, we decided to hire them to be our HVAC service company from now on.

From the time I had requested service Renner (Justin) was very responsive and professional at every…read moreaspect. My technician Chris was prompt, curious and very knowledgeable about the task. He insured the job was done well beyond the requested fix spotting potential issues and ensuring it was done correctly. Highly recommend Renner for anyone's HVAC needs.

Rennet Heat and Air Conditioning did an excellent job. Highly recommend for installation, quality…read moreand communication.

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.

Kudos to Jonathan Meza, Maintenance/Service Tech, for the excellent customer service during my…read morevisit. I reached out to A1 because I am a repeat client who previously arranged installation of a heat pump water heater and a heat pump HVAC system in my home. This visit involved checking a UV lamp that my Ecobee app indicated was overdue for replacement. I discovered, however, that my system lacked a UV lamp. Even so, Jonathan shared more details about my setup and showed no annoyance over a call that differed from the initial report. He described the UV lamp options available for my unit and noted that he would gladly return to install one if I chose to add it to my heat pump system. For all your heat pump system needs, I strongly recommend the team at A1 Guaranteed Heating & Air.

Isaiah was a great help. He did a wonderful job and took care of all my needs. He cleaned…read moreeverything after he was done. He and cool supervisor where great his name was John tan M. I'd call on them in future.

Got a HVAC unit tune-up done through Home Depot and Kevin Ly was amazing and really helpful and…read moreeducated us and checked every bit of the heater and cooling system. I would highly recommend Jazz and Kevin. In the tune-up service, I would have hoped that they cleaned the exterior of the cooling unit blower.

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.