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    Services - Lang's HVAC

    HVAC installation or replacement

    HVAC system repair

    HVAC system maintenance

    2 More Services

    Water heater installation

    Water heater repair

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    Key Heating & Air Conditioning

    Key Heating & Air Conditioning

    (1 review)

    The workmen at this company when installing the condenser outside, tore the insulation down in the…read morebasement and didn't replace it leaving exposed pipe and cold air leaking into my kitchen above the vent window in the basement. My workman said if he hadn't discovered the exposed pipe, I would have had burst water pipes very soon due to the freezing temperatures. Rather than cut the insulation and replace it when done, they just tore it down.

    From the owner: Key Heating & Air Conditioning is a family-run team of HVAC contractors based out of Exeter, NH…read more For over 25 years they've provided home energy assessments, HVAC maintenance, and installation of all types of HVAC systems. With 100% customer satisfaction as their ultimate goal, the local business is proud to say they've earned an A+ rating with the Better Business Bureau, and many glowing reviews from happy clients. They're the professionals to call when you need efficient HVAC solutions at competitive prices. How is Key Heating & Air Conditioning able to stay at the forefront of the industry? The answer is ongoing education. By providing regular training classes for their EPA-certified technicians, they're the most qualified company in the area to service and install high-SEER cooling and heating systems, geothermal equipment, and ductless systems. In addition, Key Heating & Air Conditioning is qualified to install, service, and repair Mitsubishi Electric Cooling & Heating systems as certified Mitsubishi Diamond Elite Contractors. They're also highly invested in maintaining "green" practices, such as recycling refrigerants and using as many environmentally friendly products as possible.

    Justin Douglas HVAC - Ultra high efficient Bosch heat pump

    Justin Douglas HVAC

    (5 reviews)

    I had been searching for a trustworthy, reliable HVAC guy for years -- that search just ended with…read moreJustin. I hired him for a routine cleaning and to help me understand the older furnace that came with my home. While other companies wanted over $300 just to show up, Justin charged half that and didn't try to upsell me on an expensive new unit I didn't need. He's incredibly knowledgeable, honest, and takes the time to explain everything in a way a homeowner without HVAC experience can easily understand. As a one-man small business, he delivers the kind of personal, high-quality service you rarely see anymore. I can't recommend Justin enough, do yourself a favor and hire him over the larger less honest companies. Thank you again Justin!

    Decided I didn't want to use this service. Asked to be billed. DEMANDED that I give my credit card…read moreinformation or he'd call the cops. Told him again to bill me. Once again threatened with cops. Offered him $160 in CASH. Told me it was $180. Gave him the cash. He called me a fucking dyke. And then yells it at me. Basically stole my money and then proceeded to insult me. Would not, under any circumstances, suggest connecting with this person. Also threatened me with a law that didn't apply, so must not be the first time he's done something like this to a customer. Steer clear. ADDENDUM: Called the cops on me for harassment. Officer Carter, specifically. Threatened by a fucking dyke who doesn't have his address but he has mine‽ Christ on a cross.

    Pipe Dreams Plumbing - Outdoor kitchen

    Pipe Dreams Plumbing

    (6 reviews)

    I was having a leaking problem in either the toilet or the pipe behind it. The plumber said it was…read morethe seal - which he replaced and charged over $300. The next day I called as something was still leaking and he found a crack in the toilet as well as the bowl - Al had dust and signs of having been there. I bought a toilet to try & defray the costs but the two appointments cost over $800! the plumber had a fairly bad attitude and sent me some nasty texts - insinuating I had cracked the toilet the night he was first there. I would not use them and do not recommend them. Cost was same as was quoted when the plumber got the toilet - outrageous pricing and bad attitude.

    When I was made aware of a black hole in the downstairs bath room ceiling, I knew I had a problem,…read moreprobably from the 27 year old toilet in the upstairs bath room. Being concerned about the expensive local plumber I have used in the past I went on the web! Not being comfortable with the label "PIPE DREAMS" I bit the bullet as he was very local and had a high "yelp" rating so I gave him a call the next business day about 9 am and left a message. He called me back about 10am from out of town but requested if he could stop by about "noon' time: and HE DID 1pm! He took one look and started taking his first of many trips to his truck and came back with a ladder and camera and found a leak at the 3 clock side of the connection. It was a very difficult repair. The steel ring holding the toilet was totally rusted out. But he had the tools in the truck . He not only had the tools in the truck he had all the parts to return the entire toilet to NEW CONDITION and rolled out at 2:45pm and I had a new toilet for HALF THE COST ANTICIPATED . I WAS STUNED. as a register professional engineer he exceeded my highest expectations . He knew what to do, how to do it, prepared to do it, and pleasant and friendly doing it. I CAN HIGHLY RECOMMEND THIS PIPE DREAMER

    Mr. Rooter Plumbing of Greater New Hampshire

    Mr. Rooter Plumbing of Greater New Hampshire

    (37 reviews)

    I cannot recommend this business enough. Use their website for an inquiry & you will receive a…read morecall. I'm in sales & connecting with customers on a personal level is so important. I felt valued for such a simple request to remove a shorter toilet installed in my home that was built in 2004 for a comfort height. Their schedule was open & flexible. They DID NOT charge a fee for a site evaluation. They gave a quote over the phone. I now have an attractive, water efficient American Standard, comfort height toilet. The associates removed & hauled away the old one. Their quote was so competitive. Part of me during a stressful time in my life thought "Hey, they value me as a customer & they made it happen." I was not onsite for the work, but my husband was so impressed that he called me to share his feedback & asked that I share a 5 star review. The other nicest things were that Matt & Nick were so kind to our 2 cats & also complimented our home. That's above & beyond. On a Friday evening, we were their last stop & they didn't complain. I think highly about this. Please, fellow customers, call or write on their website for the process. I spoke with Keith & he was in touch with me more than I expected for a plumbing company.

    MR. Rooter .Don't call them , our sum pump went. we had water all over , we are a older couple we…read moredont know price of stuff, we know we needed it done they said pump was broke and not under warranty so we said ok they installed a 5 foot pipe and a sum pump and check vale took about hour. the next couple days we ask around for prices everyone said they ROBBED US, Price was 3x to high and they took my old pump so I could not try to get money back, anyone who takes advantage of people when they need help the most are at the bottom of the shit pile so please don't waste your time or mostly your Money on Mr Rooter.....

    Lang's HVAC - hvac - Updated May 2026

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