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    Recommended Reviews - Mario's Oil

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    3 years ago

    Been going to them for years. Great company and always reliable when I need oil. I usually request 100 gallons everytime I order

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    4 years ago

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    Think Energy

    Think Energy

    (2 reviews)

    Charlestown

    I was promised a $100 gift card when I switched over. They are Not the cheapest supplier, but the…read more$100 over 12 months covered the difference with $50 left over. Yay me. When I tried to collect the card I was told I had to be a customer for 6 months. Wasn't mentioned up front, but no biggie. Now after 6+ months, I once again tried too get the gift card. I filled out the form and jumped through the hoops... Today I received an e-mail saying my payments were "not on time" as required for the rebate. I have Auto Pay. I have never missed a payment. My payments are Never Late. This is B.S. Find someone else... anyone else.

    Think Energy uses sketchy and fraudulent practices to acquire customers for their service. A rep…read morecame to my door impersonating an Eversource employee asking to do a quick check on usage, he then told me for my trouble I would be receiving a 20% discount on my bill he just said someone would call me to confirm. I received a call with from a rep using misleading tactics to get me to agree to switch my service to Think Energy. I told him about the door rep claiming to be Eversource and how unethical this was and told him I would not be moving my service. 1 week later I received a letter in the mail from Think Energy thanking me for switching my service and stating that they had notified my old provider of the change. I not once granted permission for this and specifically said I do not want their service but they went ahead and switched it anyway. Do not use this company, and be wary of door to door representatives.

    Prendergast Oil & Energy

    Prendergast Oil & Energy

    (26 reviews)

    Tom Prendergast and Brendan and their team are examples of experts who are knowledgeable and take…read morepride in doing truly excellent work for a fair price. Over the last 15 years, they have replaced our boiler (in the depth of winter) and then as our piping needed upkeep and improvement, they've come back reliably even when they're under great pressure. We will sorely miss them now that they've retired. They deserve a rest and I hope they can relax and enjoy retirement. Thanks Tom, Brendan, and team!!

    Pro: relatively quick response Con: Incompetent/lazy…read more I was recommended them by my neighbor so thought I would ask them to come diagnose an issue with my air conditioner. Someone came over and looked at the unit and said that the problem was most likely a clogged drainage tube. But, since the air handler was in a crawl space, the technician declared that he could do nothing about it since he couldn't get to it. He even suggested that we should knock down a wall if we want to service it. He made absolutely no attempt to find a solution and declared a lack of options and gave up. With that said, we decided to get a second opinion and had another company come in for the same issue. That person not only decided to go into the crawl space but he did the same service and cleared the clogged pipe from inside the crawl space. So, basically, their technician was not only lazy but also suggested we waste thousands of dollars knocking down a wall to fix an issue that eventually cost us $150 with the new guy. This is a terrible look for Prendergast Oil. I was charged $120 by them for nothing at all because their technician was too lazy to do actual work. I hope this helps you improve their service. I don't want to just resort to a bad review somewhere because I would like you, as a local business, to improve your services.

    Mario's Oil - hvac - Updated September 2026

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