1. Diamond HVAC

    1. Diamond HVAC

    0

    Pleasanton, CA

    Diamond HVAC

    5.0 (8 reviews)
    Closed 8:00 am - 8:00 pm

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    1 year ago

    I had a great experience. Technician came on time, and he helped me fixed the starter on the condensor unit

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    1 year ago

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    3 years ago

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    Ask the Community - Diamond HVAC

    Chill Heating and Cooling

    Chill Heating and Cooling

    4.8
    (261 reviews)

    We had a great experience with Chill Heating and Cooling. First off, I had a total of four…read moredifferent companies give me a quote to replace our existing Furnace & A/C units. Chill was the second to arrive and give us an estimate. At first glance when comparing the numbers they gave me to that of the first company, they seemed way off and too cheap to be real. After getting more quotes, Chill remained the lowest price; however, the cost for some of the other companies came in somewhat close. Upon closer review of the contracts, the type of units offered by Chill were much better. A clear difference and made the price look even better! So we signed up and set our appointment up for the next week. We had to move the date since we felt the timing was terrible (expecting 90° weather when the following week was going to be 60°). They moved the appt with ease, even setting it for the following Monday -- on Memorial Day! This was something they offered and I jumped on it, since I was planning to work from home anyway that day. The day of the install went as expected. No issues arose; although, for the guys in the attic I think they would say they had to make some unplanned adjustments -- no complaints to myself or family. All three workers were extremely kind and respectful. They arrived at 9:20 AM and were out before 6:30 PM. Before starting work, they laid down tarps along the hallway (where the entrance to the attic is). They placed all of the old furnace/AC equipment out in front of the house, but cleaned it all up and packed it into their vehicles. They swept up most all of the leftover debris that fell from the attic space and gathered all of their tools. Upon exiting, one of the installers walked me through how to setup the Google Nest Thermostat. He was very patient and waited to ensure the system was fully functional before leaving (used a thermostat gun to read the temperature on one of the vents).

    Chill Heating and Cooling was extremely fast to respond to my inquiry over yelp and then came same…read moreday! My house was 80 degrees and climbing during a heat wave and Chill came to the rescue! Thank you Vik!

    AIS Heating & Air Conditioning

    AIS Heating & Air Conditioning

    5.0
    (66 reviews)

    My AC was not turning on. I had already tried several troubleshooting steps myself but could not…read morefigure out the problem. I saw the great reviews for AIS and noticed a $58 service call special advertised on Yelp, so I reached out. Making an appointment was incredibly easy. Brenham arrived in just a few hours. He was pleasant to work with and clearly knew his stuff. He quickly diagnosed the issue and fixed it; it turned out to be a disconnected wire, so it was a pretty simple fix. While he was there, he also looked at another issue I was having with my heater short-cycling. It turned out the motherboard needed to be replaced, and he luckily had one with him. The price was on the higher side for a relatively simple swap, but I understand I am paying for his expertise, and since he fixed my AC on the spot, it seemed fair. He offered various other upgrades and maintenance plans, but all of that felt unnecessary for a 34-year-old system that is on borrowed time, so I declined. I would definitely use this company again and was very satisfied with the service.

    My furnace fan/blower would not turn on and with being two days away from mid-to-high 90 degree…read moreweather arriving, I was dreading how to live through the heat without air conditioning. I called around and AIS came to the rescue. They were able to send a technician, Brenham, out the same day! My window was between noon and 3pm. I got a text from the office at 12:30 that the technician would arrive close to 2:30. Even though that arrival was within the window they had already communicated, they still thoughtfully reached out to give me a more precise time. This was much appreciated as it allowed me to run out and do a couple of errands before the technician arrived. Brenham texted me about 20 min before his arrival saying he was on the way. He arrived right on time and was very respectful and had a nice, easy going demeanor. He got right to work troubleshooting the furnace, explaining to me how he was approaching the task, which I appreciated. I even learned a couple of things about furnaces! The issue ended up being the furnace's mother board and the "universal" board he had was not compatible. I feared this meant he would have to order one and it would be more days without AC. Brenham said he would check his van to see what he had and thankfully had the exact board for my furnace. He replaced the board and the furnace blower turned on! Even though my issues was resolved, he took the extra time to check on my outdoor AC unit and did some diagnostics including checking the refrigerant levels. It was a nice "extra comfort" to know the AC unit checked out fine. I was in a jam and AIS came through for me. Brenham was extremely knowledgeable and did great work. HIGHLY recommend AIS for all your HVAC needs.

    The QuietCool Guys

    The QuietCool Guys

    4.9
    (55 reviews)

    I had an exceptional experience with QC Guys, from purchasing the fan to the seamless installation…read moreprocess. The scheduling was effortless, with clear and consistent communication via email and text every step of the way. Messages like scheduling, notifying they were on their way, and text reminders for the appointment. Next level professionals. On installation day, Cody and his partner were professional and efficient. They promptly set up the work area, protected the surroundings, wore shoe covers, and clearly explained where the inlet would be placed to ensure we were happy with the aesthetic. They unpacked everything and went straight to work By the time I was done with chores in the backyard, they finished the job super duper fast, and when I returned inside, the fan was fully installed and working perfectly, exactly as I wanted. The fan quality is excellent with a brushless motor. Such a good value for efficiency and long life. The airflow throughout the house is awesome, cooling every room with fresh air while saving on electricity--a great value. I highly recommend QC Guys for their outstanding service and quality. True professionals.

    Responded right away, received a quote that was reasonably good and completed the job as promised…read more The system is quiet and very effective. Josh explained and demonstrated the system and answered my questions respectfully. Very good customer service throughout the process.

    Perfect Star Heating, Cooling, & Electrical

    Perfect Star Heating, Cooling, & Electrical

    4.6
    (590 reviews)

    We had our AC stop cooling in the middle of a hot day, and with two young kids and a dog at home,…read morewe were pretty stressed. Keon Garcia came out and did an outstanding job. What I appreciated most was that he didn't just start replacing parts. He thoroughly diagnosed the system, explained what he was testing, and walked me through the results. He showed me that the capacitor was testing low, the contactor was worn and pitted, and even performed a megger test on the compressor to verify it was still healthy. After the repairs, he confirmed everything was working properly by showing me the compressor amperage had dropped back to normal and that the system had an 18-degree temperature split. Keon was patient with all of my questions and never made me feel rushed. He explained the pros and cons of the recommended repairs, including the hard-start kit, so I could make an informed decision instead of feeling pressured. I really appreciated his transparency and professionalism. By the time he was done, our AC was cooling properly again, and he even worked with us on the final price. If you're looking for an HVAC technician who is knowledgeable, honest, thorough, and takes the time to educate his customers, I highly recommend Keon Garcia. Thanks again for getting our family cool again!

    Unfortunately, your response omits several important objective facts that I discussed with you…read moredirectly during our phone conversation. First, repeatedly referring to my furnace as "a 1996 furnace" is misleading. While the cabinet was originally installed in 1996, all major internal components were professionally replaced five years ago. Multiple licensed HVAC contractors immediately recognized the refurbishment during their inspections and all independently concluded that my furnace was in excellent operating condition with decades of service life remaining. More concerning was your technician's sales presentation. I was told my furnace was a fire hazard, posed a carbon monoxide risk, and required replacement in the interest of safety. Those are serious claims. Yet four independent licensed HVAC contractors disagreed with that assessment, and none recommended replacing the furnace. Instead, they all recommended replacing only the air conditioner. You also claim the photos your technician showed me were legitimate. That claim is difficult to reconcile with what I personally witnessed. I watched all four of the other contractors perform their inspections in real time. They each inserted their phones into my furnace, showed me live video from inside the unit, and provided photographs of the internal components. All four sets of images were consistent with one another. None resembled the photos your technician used to justify replacing my furnace. That discrepancy is exactly why I sought multiple independent opinions before making an $18,000 decision. During our phone call, I explained all of this to you and provided the context regarding the refurbishment. Your public response ignores those facts and instead repeatedly relies on the original installation date to justify the recommendation somehow. My review was never about whether homeowners can replace both systems at the same time. Many choose to do so. My concern was being told that I NEEDED to replace a recently refurbished, fully functional furnace because it was supposedly unsafe. After obtaining four independent opinions, I concluded that your recommendation was not supported by objective facts. "Facts don't care about your feelings" the saying goes. Prospective customers can draw their own conclusions. I certainly did, which is why I sought additional opinions before authorizing nearly $18,000 in work. That decision saved me thousands of dollars, a potential service install nightmare (see the numerous 1 star reviews by others) and I stand by my review.

    Diamond HVAC - hvac - Updated July 2026

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