The technician arrive early at the promised time window. And make honest judgement with wonderful…read moreservice.

I'm extremely happy and fully satisfied with the work that Henry and his crew at Therma Tech…read moreprovided for my house to replace the air ducts and put in a new heat pump and air handler for luxurious air conditioning. I had gotten an estimate from the Costco HVAC provider, and Henry's estimate came in thousands below theirs. For me personally, he had a crew of five or six guys working on the house and reduced what would have been a 5-day job to just a little more than 2 days. Henry even came over once to check on the crew and ensure they had everything they need and everything was going well. Thanks! Henry also suggested moving the air return register away from my front door (to avoid sucking in outdoor dust/allergens) and closer to the bedroom area, and he promptly had a guy come over to patch up the hole in my entryway ceiling. Jazmin in the office was really helpful in coordinating the asbestos removal on the ducts, which was a separate job, and also the post-installation inspections. Included with the install was a wi-fi thermostat to bring me into the 21st century. The Costco guys had that as a separate item with a 2x retail markup! I had AI analyze both estimates, and Henry's was the clear choice. We've been loving our house during the August/September heat waves!

Wow, what amazing service. Sal was responsive and extremely honest. He first asked me some…read morediagnostic questions to save me a visit. Once those were ruled out, his team member Abraham came out the next day. They swapped out the malfunctioning part and guaranteed a year warranty on their work. Highly recommended and I will call with any future hvac issues!

My A/C went out today, so I opened a Yelp project to solicit for service. Sal, the owner of…read moreCostLess, immediately contacted me. He was very friendly on the phone and asked me key questions to help diagnose my issue. Since he was in the area, it only took him 10 mins to arrive. Once Sal arrived, he immediately confirmed the issue (blown capacitor), replaced it and the A/C was back in action. Sal was very friendly and professional the whole time and his price was very competitive! He also gave me helpful tips to prolong the life of my unit. Fantastic work by Sal! From opening up the Yelp project to CostLess fixing my A/C....less than 1 hour! Simply amazing! I strongly recommend CostLess for any of your HVAC needs!

We recently had our old HVAC system replaced with a new system through FUSE, and we had a great…read moreexperience with Azamat and Elmar at our home in Santa Clara. Both Azamat and Elmar were respectful, honest, professional, and hardworking throughout the entire project. They worked efficiently, kept the disruption to a minimum, and made sure the installation was completed properly and with great attention to detail. I was especially impressed with their customer service. The following day, Azamat stopped by specifically to help us get our water heater back up and running, since we were unfamiliar with its operation and didn't know how to ignite it. We really appreciated that he took the time to come back and help us, even though it was a simple follow-up. Overall, the quality of their work and the level of service made us feel that the project was absolutely worth the money. We really appreciate the work Azamat and Elmar did and would be happy to recommend them.

We used them to rewire a room that was having an issue. They were professional and got it done in a…read morereasonable amount of time despite some complexity. They are experts and know what they are doing; I would use them again. Used them a second time, and it ended up being a mistake on my side and they just charged a nominal amount for coming out. Add honest and ethical to professional and expert. Cannot recommend them enough. Thank you Vitalii!

I was able to quickly get a same day appt. The service manager Aleks was very friendly and easy to…read moreschedule with. The price was fair to me, $150 + filter for filter replacement. I was having a difficult time finding someone to simply replace the filter. The AC is working great, so it's a simple project. Other companies claimed I'd need to do "all suggested work," which sounds like a potentially expensive agreement. Gary was my technician. He was on time and very helpful. He even ran to the hardware store to buy the replacement filter, after checking the current product #. Freon offers an easy payment link and the ability to see the approx arrival time for your tech. I appreciate these small details. I'd definitely recommend Freon!

I hired these guys to install a heat pump. Their price quote was very reasonable compared to the…read moreother quotes i got. Additionally, they were very knowledgeable about all the options I had. Once I picked the unit I wanted the installation process went very quickly. Everything was done on time and all the areas were clean. Special kudos to Jessica. She is a very hard worker, extremely professional and very personable. She helped me on numerous levels. I would definitely use them!!

I've been using A&H for years - trustworthy and great work. They not only replaced our old heater…read moreand installed new AC, they also separated our 2-story home into 2 zones which means we can heat/cool each separately! Highly recommended!!

Our neighbor referred A & H Heating & AC conditioning service to us and we had them install our…read morehvac, September 2023. It worked great until this year. We have solar so we have the a/c on 72 degrees 24/7. We changed the filters every 3 to 6 months. We were using the oven and had friends over and everyone was hot. We turned down the a/c but it was over 78 in the house. We contacted A & H, July 20, 2026 and they charge $280 for a diagnostic. The technician came out the next day and couldn't find anything wrong but added a pound of Freon. Total charge was $380. That seemed to work but it didn't stay cool for long. On Aug 3rd they came and added 2 more pounds of Freon and charged $200. September 30, 2026 and we are still running warm by the end of the evening and during the heat wave it's over 80+degrees. I called them last week, Wednesday. On Monday, they will have one of their techs be in touch with me. On Wednesday, I asked for an appointment and a team member will be in touch with me. It's 3:30 Thursday. Hopefully, someone will contact us soon. I'll let you know if there are any updates.

Barsin did a thorough initial evaluation of our 23-year-old HVAC unit and walked us through…read moremultiple replacement options without any pressure. We decided on a heat pump system, which they offered at a great price. The entire team was incredibly prompt and responsive throughout the project. When a minor issue popped up after the initial installation, they came back immediately and resolved everything the very next day at no extra charge. Highly recommend them for their honesty, speed, and excellent customer service!

Got HVACerz from Yelp because of their high ratings, and the experience fully lived up to it…read more Barsin contacted me and came to my house for an estimate. He carefully checked my existing furnace and walked me through different options in a very professional and detailed way. In the end, we went with the option he recommended, and the entire process was totally transparent from start to finish. The installation crew arrived on time and kept me informed of their progress without excessive back-and-forth messages. Both Nahira and Rolando handled the removal of the old unit and the installation of the new one smoothly. After the job was done, they clearly explained how to use and maintain the new system.

Service requested: HVAC replacement. However, after the initial inspection the engineers told us we…read moreneeded to changed the ducts and insulation coming into our house to improve efficiency. It was an expensive upgrade but was the need of the time considering even a top notch system would only work at 40% efficiency. Engineer was thorough in examination. She took lot of photos. Explained the process. Air sharks didn't push for purchasing any particular equipment. We chose Daikin. Service: the work crew is very disciplined. Arrive on time. No loud noises. Informed us daily at the end of the day. Kept our house and side yard clean and tidy. Follow up: the inspection went well. We received the permit as per schedule. First year warranty is included. Whenever, we have called they promptly respond and understand our issue at hand. Over all we are beyond satisfied with contracting with them.

Air Sharks has done my furnace heating tune ups in the fall and AC tune ups in the spring every…read moreyear for the past two years. I've also had them replace the air ducts under the house which were old and not efficiently moving the air into the vents. With each visit, the techs were very professional and informative while performing the services. Before the air duct replacement, one of the project managers visited and was very thorough in explaining other services such as water heater vs. heat pump replacement and insulation. Communications with this company are also very good. It is easy to call when I need to schedule services and they also keep me up to date on the appointment arrival times via text messages. I highly recommend Air Sharks and plan to continue using this company for future services and projects.

Years ago the apartment complex I lived at contracted Calvey to install mini-split A/C in the…read moreapartment I was in. The install was amazing quality! So much so that it gave me the confidence to buy my first home without A/C because I knew I could just call Calvey. A few years later I did just that. Damn, it's been a couple of months now and I've been able to control the climate of my entire house from my phone, optimizing the temperature and sometimes making it as low as 66F to just enjoy the air being crisp. The install has been fantastic quality and the crew listened to everything I wanted every step of the way. They mounted rat spikes where I wanted, they put the lines and the units exactly where I asked and I've had no issues at all. I truly believe with home price comparisons in my area that I made money off of the install because it increased my home value. My golden retriever is happy, I am 100% happy and I will see you guys again next home upgrade. :)

Quite unimpressed. Called and spoke to their receptionist girl, who was ok, seems to not know much,…read moredeflects questions and avoids clear answers, but that's not the problem. I send plans and followed up more than twice with direct emails and voicemails. Nothing. No call, no text, no email. No response at all. Clowns! Maybe they're too busy filming awful commercials lol... call them and that's what you'll be paying for! These guys may be ok, but I'll never know and I'll never call them again because they're very unprofessional. They misrepresent 'free estimates'... liars. Find someone else is my recommendation! Bad service, zero communication. FAIL.

I am reposting my review with Global heating because it looks like my first one about three months…read moreago got taken down for whatever reason Yelp decided. John was amazing when he came over to my house. I had previously interviewed and hired two other contractors to come in to look at my AC unit and they did not know what the hell they were doing. By the time, I finally reached John, he knew exactly what was wrong! He is super honest and his price was amazing depending on what your issue is with your AC. My issue was I needed a new compressor which the other two bozo clowns couldn't figure out. My only regret is that I wish I found John as my first contractor instead of interviewing and working with the other two bozos! I live in Newark. Thanks for coming out this way to make my day a whole lot better now that I have a working AC unit.

I had an issue with an older A/C unit that multiple other providers looked at and couldn't figure…read moreout. Giovanni came in, diagnosed the problem, and found a creative solution that actually worked -- no "you need to replace the whole unit" runaround, just genuine expertise and a willingness to think outside the box. What really stood out beyond the technical skills was how accommodating and flexible he was throughout the whole process. He worked around my schedule, kept things stress-free, and was friendly and easy to talk to from start to finish. You can tell he actually cares about doing right by the customer rather than just closing a ticket. Global Heating and Cooling Services has earned a loyal customer.

Excellent service, on time, respectful and courteous. I will definitely be calling them back when…read morenecessary.

I'm an engineer and like to do electricity/plumbing/carpentry on my house. When Alberto and his…read moreteam (Jorge and Javier) came to replace our gas furnace, which I had installed myself 23 years ago, with a modern heat pump, I payed close attention to the work they were doing. I was impressed by their care and craftsmanship. I found them very open-minded when we faced puzzles that weren't expected at the beginning of the project. I also had a pleasant experience with Rudy, the salesperson. He was very technical and always willing to answer my often unusual questions. Same thing with Aiden who was here for the final permit review. He was very cooperative with the inspector and myself. The rebate team acted proactively and simplified the paperwork needed to get the money from the government. It's been a month now with our new heat pump. It works very well. And I still think the installation was accomplished like I would have done it myself. I plan on calling Irbis again in the future!