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    Diamond Mechanical

    1.7 (6 reviews)
    Closed 8:00 am - 4:00 pm

    Services - Diamond Mechanical

    Water heater installation

    Water heater repair

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    Haffner's Propane & Heating Oil

    Haffner's Propane & Heating Oil

    (20 reviews)

    I'm very happy with their oil service. However I am very unhappy with their furnace service. I had…read moresomeone come out because my furnace Wes making a racket. guy comes in says there is nothing wrong with your furnace it's the batteries in your thermostat. changed the batteries adjusted the flame and he left. O e week later I have key come. ThDre is a while I. my heat extender so they red tag it. thankfully I was able to get someone to replace my furnace within two days. I emailed haffners and never heard back. I will never use their furnace service again

    We switched an oil account to Haffner/Energy North from another local provider. We also had them…read moreinstall a new Oil furnace/boiler. While oil delivery service has been satisfactory, the install was overpriced and raised questions about the integrity of Haffner's/Energy North. We had a proposal from our former dealer to install a Buderus boiler based system. I asked the Haffners team for a proposal and price to install a system of equal quality and especially efficiency. Haffner's proposed to install a Peerless boiler based system. In multiple discussions, that system was represented to be of the same quality and efficiency as the Buderus. Those representations proved to be not accurate. I later learned that while Peerless is a very well regarded brand, it is of lesser quality and lower efficiency than the Buderus. This first came to light when one of the Haffner's technicians who installed the Peerless system acknowledged those facts in conversation after the install. I was very disappointed and immediately raised concerns about the inaccurate statements and the lack of value in what Haffner's had installed. They "met the price" of the Buderus proposal [their original price was higher for the Peerless system]. When I challenged Haffner's supervisory staff, they offered a $100 dollar price accommodation. Given the discrepancy in value and efficiency, that did not begin to make up for the inaccurate statements we relied on in accepting their proposal. This was a system for a 95 year old widow, they should have been more honest. I ultimately spoke with a neutral party about the comparison between the two boilers - a 30+ years in the business plumbing and heating professional who has worked in my home [the system at issue was for my elderly mother] for two decades. He said while Peerless is a good quality unit, it is not at the level of the Buderus. He said in his entire career, he never had experienced a defect in a Buderus device. He also explained the difference in efficiency. In the peerless boiler, heat is transferred in a single pass around a heated chamber. The medium to be heated in the Buderus system passes three times, transferring more heat for each unit of oil burned. That information only increased my disappointment with what Haffner's's/Energy North represented to me and how they treated my mother once the inaccuracies and unfairness were brought to their attention. Conclusion: Good service and low oil prices. But pay attention to what is represented about equipment quality and efficiency. In retrospect, we should have stuck with the competing local dealer and installed the Buderus based system.

    St Pierre Plumbing & Drain Cleaning - Discounts

    St Pierre Plumbing & Drain Cleaning

    (8 reviews)

    Showed up within the stated window which was awesome. Did a great job flushing my water tank. Took…read moreabout 45 minutes. Cleaned up after themselves. Highly recommended. I don't have a comparison on pricing so can't provide feedback. They responded to my request for service quickly which can be a challenge within any service industry. Very very happy with them and my service.

    This review will be much like the visit I just had with my local plumber: short…read more A guy who I *think* is the infamous "DJ" came to my house to repair a small yet steady leak coming from the water trap beneath my sink. After quickly assessing the damage, he presented me with two options: rebuild and reseal the current trap or outright replace it. Since the former was the cheaper option and had a pretty good chance of ameliorating the leak, I opted for the rebuild and reseal. Total price for the job: $140. All things considered, this business is very affordable and prompt. Their response time is ultimately what led me to elect them for my plumbing repairs. Best of all, they send updates via text to confirm your appointment date and how far out they are before arrival. I also appreciate the fact they're a NH based business. See? Not all my money has to go to Mass. Needless to say....I have them bookmarked for any future plumbing needs (Re: I'll need a bidet installed in my bathroom soon). I highly recommend giving these guys a try. St Pierre Plumbing & Drain Cleaning is worth 5 leak free kitchen sink water traps out of 5.

    Diamond Mechanical - hvac - Updated August 2026

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