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Related to 3/16 Mishubishi H2i mini split heat pump extremely high heating season operating cost

kazirode | Posted in Energy Efficiency and Durability on

Hello Dana,

It has been a while, Heyoka Solutions isn’t taking on new customers, but they recommended Chris Larkum. He confirmed that the heat loss/load was calculated correctly. and I’m still struggling with Misubishi and finding an excellent contractor for my high operating cost mini splits. A contractor that I brought in to do a system “commissioning” didn’t find anything obvious, except one of the exterior units has a small refrigerant leak which we will repair. That’s probably not causing about 2 to 2 1/2 times the cost of oil at the coldest winter and highest price [($3.80/gal). With all in the background, it is our guess that the main reasons for extremely high operating costs are the minimally adequate insulation and the early 80’s windows as well as that the heat pumps are not efficient [operating cost] when temperatures drop below 25F. Since the indoor units are located near the ceiling, that probably contributes quite a bit into this equation. I’m in Norfolk county, MA area. Can you recommend excellent heat pump contractors and insulation experts to help a disappointed Mitsubishi mini split heat pump system owner?

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Replies

  1. GBA Editor
    Martin Holladay | | #1

    Editor's note: Kazirode has posted the above question to Dana Dorsett as a new Q&A thread, even though it was originally posted as a comment at the end of a longer thread.

    For those who don't remember the thread it is based on, here is a link to the thread that Kazirode is talking about: "How to Reduce High Energy Costs for Ductless Minisplits."

    1. kazirode | | #2

      Oops, sorry about posting my follow-up question in the wrong category. I posted around the time the site was going down. I'll repost in the original thread. Thank you

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