Results 1 to 5 of 5

Thread: Mitsu Heat Pump

  1. #1
    Join Date
    Feb 2004
    Posts
    110
    Post Likes
    I recently had an addition put on over the garage (520 sq ft). I did a heat load calc on the space and oversized the unit by 20%. Based on this I chose a Mitsu 15K heat mini split (I did not want to go larger to prevent short cycling in the summer). My only concern was that I live in MA and the temps in the winter often get below freezing, teens. The contractors that I had over said it would be no problem. After this winter when the temps dropped below zero, the heat pump seemed to do fine. My question is I know below 32 the heat pumps loose output. I am not sure if the unit ran all the time to keep up but is this the most efficient source of heat for a small space. I did not want to go electric as KW/H in MA is 13 cents. Should I look into some supplemental heat for the really cold days? If so any recomendations?

    Thanks

  2. #2
    Join Date
    Mar 2004
    Location
    Grottoes VA
    Posts
    5,856
    Post Likes
    There is no back-up for that unit. If your electric bill was reasonable and you kept warm I would leave it alone. If not reasonable, what heats your main house now?
    Karst means cave. So, I search for caves.

  3. #3
    Join Date
    Feb 2004
    Posts
    110
    Post Likes

    Mitsu Heat Pump

    Bills were a bit high but hard to tell as there was construction going on for most of the winter and it was really cold. I currently have a gas 3 zone furnace with A/C/. Unfortunately the unit was too far away to be able to branch a line and its capacity was questionnable. Someone mentioned a gas or pellet stove. Easy to vent and 85+ efficient?

  4. #4
    Join Date
    Feb 2003
    Posts
    1,996
    Post Likes
    Are you sure your model doesn't have electric strip backup? Mitsu makes one model that has it. Without getting into too much expense, I just might get an electric BB just for those few days some winters when you go below zero. Any thought to a gas direct vent fireplace or wall heater? Checkout http://www.cozyheaters.com

  5. #5
    Join Date
    Oct 2002
    Posts
    4
    Post Likes

    Confused

    wHY NOT USE A GAS HEATER. YOU ALREADY HAVE THE GAS TO THE HOUSE. pELLET STOVE, WOOD STOVES ARE NICE BUT YOU NEED TO CLEAN AND ADD FUEL ALL THE TIME. A GAS FIRE PLACE WITH A REMOTE THERMOSTAT WILL BE JUST FINE.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event