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    Page 2 of 6

    Ask the Community - GAC Services

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    Review Highlights - GAC Services

    I have being using Gaithersburg AC for about & years now.

    Mentioned in 3 reviews

    Read more highlights

    Tim Whistler Plumbing, Gas Fitting, HVAC, and Electrical

    Tim Whistler Plumbing, Gas Fitting, HVAC, and Electrical

    4.6
    (398 reviews)

    Excellent work done replacing one of my shower faucets and installing a new shut off valve…read more Couldn't be happier with the quality of the work. I would highly recommend!

    They are professional, punctual, knowledgeable and do good quality work. I very much respect the…read moretechnician, but the problem appears to lie with the company's practices and fees. The main problem and downside is that they are very expensive and overcharge. Despite the Yelp page saying that the company provides a "free estimate", I was quoted $49 for the technician to travel. In addition, if I had not chosen to go ahead with the repair, the company would have charged me an additional $150 diagnostic fee. Essentially, despite the yelp profile stating a "free estimate", it will cost you closer to $200 to get a quote. I see this as false advertisement. In addition, when the technician concluded that the problem was the capacitor, I received a final quote of $600. When I googled the price of the same capacitor online, the price range was in between 75$ - 150$. Essentially, they are charging a premium of at least $450 per replacement for a single part (capacitor). Despite their professionalism and quality work, I do not recommend this company for the reasons stated above. If price is not a concern for you, and you would rather pay twice the market value for a job then you should definitely choose them. EDIT: I actually googled the price of a capacitor and offered to buy my own. I was told that by the technician that if I purchased my own capacitor that the company would not install it. In conclusion, they did not address any of my concerns. Unfortunately, after reading the other bad reviews, there seems to be a consistent pattern of discrepancies between what they tell customers and what they instruct technicians to say on site. Making an honest living is so much more rewarding than making it dishonest living.

    Heil Plumbing & HVAC

    Heil Plumbing & HVAC

    4.7
    (131 reviews)

    Since HEIL Plumbing has been my "go to" residential plumbing service for a number of years, I…read morecalled them immediately when we had a slow toilet draining issue in the basemernt bathroom. I called HEIL Plumbing when they opened at 07:30 hrs. I got a return call from Allison within 1 hour. She was able to schedule Eric (the younger) to come out the same day between 09:00 hrs and 13:00 hrs. Eric arrived at approximately 09:20 hrs. Eric quickly diagnosed the issue. This time, while he was running diagnostic checks to identify the issue, fortunately, the toilet clog cleared itself. He ran the check a number of times , including running the sink cold water to try to overload the waste line with water, to make sure that the clogged toilet was no longer an issue. Once he was satisfied that all was good, he let me know that the charge for today would be the general diagniostic charge of $95.00. Again, I was extremely satisfied with the entire process, from making an appointment, to Eric's arrival time, his pleasant demeanor and his professional knowledge. I would highly recomment Eric (the younger) with HEIL Plumbing for anyone who has a residential plumbing issue that they need to have addressed by a pleasant, knowledgeable professional.

    I booked a repair assessment, which is very expensive, with the expectation that the expert is as…read moregood as described in these reviews. We were very disappointed. The technician did arrive on time, but did not offer any insight to our leak issue other than here's how much Heil would charge for a replacement. The assessment took a minute. We had to spoon-feed questions and answers to get the technician to tell us more of what he saw. The answers did not reflect any expertise or insightful-ness. Wish the assessment was either free or can get a refund.

    Mallick Plumbing & Heating

    Mallick Plumbing & Heating

    4.1
    (146 reviews)

    Brendon from Mallick Plumbing serviced our Toto toilet with both knowledge and concern. We highly…read morerecommend Brendon and Mallick Plumbing who ordered an set up an appointment is a very timely way.

    Called these people for an estimate to repair/replace leaky copper pipes in the basement that were…read moreleaking, on top of the Hot Water heater. The guy came out, don't want to name the plumber, sent me an estimate literally 5 minutes after leaving the house. The estimate was for almost $5000 to replace the hot water heater and another $4500+ to repair/replace the leaky pipes for a total of almost $9500. Ridiculously laughable. I was able to get the job done for $1200 total by a licensed independent plumber. I didn't need the HW heater to be replaced. They just had to remove some HVAC ductwork to get to the leaky pipes, which they put everything back after replacing pipes. Do Not use Mallick I would consider them to be untrustworthy, and total rip off. Always get at least 3 estimates just make sure they are licensed. I still ended paying $99 for Mallick because they have a policy you pay $99 for estimate but gets added to the total if you get the work done. Again, ripoff. I also got an estimate from FH Furr that was significantly lower than Mallick but they were unwilling to remove ducts that they didn't install. Another ridiculous policy by another large plumbing company even though their plumber said they would have to involve the HVAC department. Maybe their plumbers don't know company policy. These guys didn't charge for an estimate. My recommendation is DO NOT use Mallick and even DO NOT use FH Furr.

    Service Force Plumbing

    Service Force Plumbing

    4.8
    (29 reviews)

    I called SFP on Friday 26 June 2026 with a non emergency to address a toilet tank that sometimes…read moredid not fill with water. Kamron came the same day and fixed the toilet tank. He had all the parts needed on the truck. He also showed me the two outdoor water shut off valves and when he left, water was flowing from the spigots. I can now water my newly planted bushes.

    Super unprofessional. I asked for a bid for a commercial space. Gave all the info necessary and my…read morepersonal detail information to contact with any questions. They had bid this store for a separate scope of work with no issues. I called to follow up on when the estimate would be ready. They informed me they didn't want the work. I was very confused as to why there was an issue. Roy on the phone told me that there was too many issues on back and forth communication. And that nobody was on site to meet them. This didn't make sense to me since there had been no back and forth communication between us. It was clear in all my communication that I was a remote PM and to call me directly with any questions about scope etc. Roy was frustrated that the store employees didn't know what they were talking about. There wasn't an issue the first time that they went out to this location. They never called me to clarify and never called me to let me know they were going to pass on the job. I had called at the end of last week for an update and was told the bid was being worked on. When I called back this week I was shocked by them saying they were now refusing the job. I asked when they were going to let me know that they weren't going to move forward with the job. You know the professional thing to do...? I was specifically told by Roy, "Well you wasted our time, so I thought we would waste yours." If you don't want the work that's one thing. But to tell me you were working on something that you weren't, and to treat me like that when I was just trying to get to the bottom of what was going on is rather shocking. They never called with any questions and didn't have the decency to let me know that they weren't going to move forward with the job. When I called to follow up and to be told that they wanted to waste my time is disgraceful for any business. To expect store employees to know the exact scope of work doesn't make sense in the commercial space. Do not choose this company for any commercial work. There communication is severely lacking and their customer service is childish.

    JF Plumbing & Heating

    JF Plumbing & Heating

    4.3
    (30 reviews)

    JF Plumbing and Heating responded quickly to all our questions before we committed on a replacement…read moretoilet for an old apartment in a historic building. Their technician - Joe - is a knowledgeable, capable, conversational asset. Despite unforeseen conditions requiring repair of the plumbing connection that was to remain, and two toilets that were leaky from manufacturing defects, JF Plumbing and Heating responded on the fly, taking the working parts of each while diagnosing slapdash repairs by the previous owner - that may have led to the broken toilet we had to replace - in the process. As of the day after replacement, everything sems in great working condition. It's been rare in my experience that tradespersons call to keep me apprised of their status on the day scheduled for the work. Thanks to Melanie, too for the heads-up. Six stars! ref: I'm a architect.

    My 2 upstairs toilet drains were clogged and JF came to snake on Friday afternoon. Charged me $630…read morefor what I thought was cleared and job completed. By Sunday morning the backups returned. JF returned and again snaked the drains. Very nice technicians and hopefully the job is completed for good. However, I was charged another $350!!!! I called to ask why I was charged again for what was clearly a redo of the previous job 2 days prior that was not successful. I was told it was the company's policy to charge for another visit. Apparently the company does not stand by their work. I do not recommend.

    The Elite Service Plumber

    The Elite Service Plumber

    4.6
    (117 reviews)

    We scheduled service two different times with Shawn and yet not only did he not show up, but he…read morenever even contacted us to let us know. TWO separate times! The first time ge apologized so we thought it was a fluke, but his text on Friday saying he would see us today was meaningless We spent two full days waiting for him to arrive and my husband spent a lot of time cleaning, taking things out from under the cabinets and putting them up on our bathroom counters so that Shawn could actually work on the sinks. We've had boxes on our bathroom counters for 3 weeks now. I actually needed to go to a headache clinic today because I was very sick with a horrible 3 day migraine, but we couldn't leave the house if Shawn was eventually coming. I have notified the friend who referred us to him as well as everyone in my HOA's Facebook group because he was recommended by her and I needed to let others know that Shawn is not a reliable plumber. Baded on all the other 1 srar reviews, i anticipate Shawn will respond and say it's somehow our fault, like he has done with all the other bad reviews, but all we did was try to give him a job to do. We are taking our service elsewhere, likely Tuckers.

    An update on a hot water heater install 4 years later. Ends up that the cold water inlet pipe was…read morecorroding pretty bad right where it connects to the water heater. There must have been a small leak in the connection as I wiped it dry one day and the next day when I checked, it was a little wet. Had another plumber access and come and fix it and he said the pipe was not sealed correctly on the original install, so it obviously cost me money to repair it. Granted this was 4 years later but still I would not expect an issue 4 years after getting a new hot water heater installed, so you can be the judge if thats an unreasonable expectation.

    GAC Services - hvac - Updated August 2026

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