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    David Granillo Air Conditioning & Heating

    4.5 (23 reviews)
    Open 8:00 am - 5:00 pm

    Services - David Granillo Air Conditioning & Heating

    HVAC installation or replacement

    HVAC system repair

    David Granillo Air Conditioning & Heating Photos

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    11 years ago

    Dave replaced the wall heaters in my rental property. Excellent service at fair price.

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    10 years ago

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    Review Highlights - David Granillo Air Conditioning & Heating

    David came to check our A/C and was very thorough and straightforward.

    Mentioned in 5 reviews

    Read more highlights

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    Diamond Air Services

    Diamond Air Services

    5.0
    (62 reviews)

    We're sitting inside cool and comfortable on a hot June day, thanks to the incredible team at…read moreDiamond who replaced our old broken 5-ton AC with a smaller, more energy efficient modern Mitsubishi heat pump system. A huge thanks to Anthony and Tiffany for coordinating all the logistics, Anthony in particular was so helpful from start to finish, always available, responded immediately to any question, and just made the whole process incredibly easy. An especially big thanks to our installer Bobby and his crew who did such an exceptional job carefully removing the old system and doing a beautiful install of the new one. They also completely reworked the AC closet, moving the system forward and sealing everything off cleanly, what was once a poorly converted linen closet now has potential for usable space behind it. Whereas the old system sounded like a jet engine taking off, the new Mitsubishi is astonishingly quiet, the condenser is outside our bedroom and you hear literally nothing. It works flawlessly and has been keeping the house perfectly cool through what's shaping up to be a hot summer. This was not an easy install either. The house, like many older homes, is full of quirks and Diamond did an amazing job working around all the pitfalls that come with squeezing a central HVAC system into a house not originally designed for one. Everyone at Diamond was a total pleasure to work with and have in our home. Their pricing was fair and reasonable and the quality of their workmanship is just excellent. If you need any kind of HVAC work done I highly recommend reaching out to Anthony and the Diamond team. Thanks so much guys!

    We had a 5-ton, 3-phase Carrier package unit installed on our commercial rooftop, and the entire…read moreprocess was fast, smooth and reliable from start to finish. Their team handled the install with real expertise, and everything was up and running couple hours later exactly as promised. We later asked if they could adjust the blower speed to push more air, and they came out quickly a day later without any hassle. That level of responsiveness is hard to find. Highly recommend Diamond Air Services for anyone looking for qualified HVAC work.

    All City Plumbing, Air & Electrical

    All City Plumbing, Air & Electrical

    4.7
    (4.7k reviews)

    Service Maintenance to our Air Conditioner was great! Gary Lopez was very knowledgeable,…read moreprofessional and nice. His work was done in quality time and his suggestions were appreciated. We added a hard start to our unit and felt the price was reasonable. Gary's start to finish time was quicker than we anticipated. Thank you All City again for taking care of us!

    Beware of this company. They provided plumbing services at my 87 year old mother's house. The first…read morequote was for $19,000 for a redrain of the drainage system. Then they said there was tree root discovered in the line. They quoted $13,000 more to resolve it. There were no options provided for hydrojetting and a liner. We do not know anything about plumbing, so we did not question the additional cost. We had to trust the techs providing the service. We requested a refund and the company offered $4,000.00. We feel that given the cost, we are warranted a higher refund. The company refused. Although the owner states that options were given to my mother, they were not. I, (daughter), was there at the time of the tech's explanation of the work and so was my cousin. The tech spoke to my mother in Spanish, my cousin speaks and understands Spanish, and she also stands firm that no options were given to my mother regarding the option of hydrojetting and liner. If there were options my mother would have chosen the lesser cost. We are very upset with the dishonesty of this company. So, make sure you research costs of other plumbing companies before using this one.

    Sean Patrick HVAC

    Sean Patrick HVAC

    4.7
    (35 reviews)

    Replaced my elderly aunt's HVAC system with a reasonable cost vs some outrageous quotes we got from…read moreothers who apparently take advantage of the elderly . Quality work and very professional and my aunt is still enjoying her system set we almost a year after.

    Since my previous review, one last item which the new thermostat has been installed. We were happy…read moreand thankful for the good will of Sean. However we still disappointed with the AC condenser unit that was replaced with the lower efficiency machine that was cheaper and low quality. Well, promise made is not promise kept. It will made my experience whole if the unit was replaced with what it promised. Updates: After I post this review the owner : Sean, was calling me and my wife multiple times, almost every hour. Asking me to take down this bad review. First he asked me politely then he starts threatening me and my wife by explaining what do we do for living and he will start calling my friends, family and workplace where we work. Not sure what he wants to do by stalking our information and being intrusive to our life. He insists to come back to my house which I refuse to give him permission. He threatens my wife by telling her that he used to be a bad guy, and I don't understand why he starts getting violent and seek revenge against my family. So I decided to file restraining order with Los Angeles County Court to protect my family against his violent nature and behavior, per our lawyers advise.

    David Granillo Air Conditioning & Heating - hvac - Updated June 2026

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