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saltidawg

Heat Pump Beneath Deck

SaltiDawg
13 years ago

In ten days my new Carrier Heat Pump and oil furnace is to be installed. The outside unit is going to have to be moved from the old unit's location.

Our first choice for location is just under a large deck with a screened in porch. Carrier's Installation Manual specifies various amounts of clearance on all four sides and specifies 48" clearance above the unit. There is 58" of vertical clearance available.

We never use that porch during the heat of summer, and only rarely use the porch in the spring and fall.

Our contractor points out that there will be noise heard on the porch and also (extra) heat on the porch during the cooling season.

The unit will be beneath the outer perimeter of the deck, just underneath. We prefer this location because it will require no re-landscaping, it will be out of sight, and the unit will be protected from snow accumulation.

Does anyone see a problem with this approach?

Jerry

Comments (8)

  • paulbm
    13 years ago

    Very poor idea to put the unit under the porch. the air will
    blow up and hit the floor of the porch and a lot of that hot air will bounce back down and be reticulated through the unit.
    later Paulbm

  • veesubotee
    13 years ago

    It will also make it difficult to service--may need to resurrect Groucho Marx.

    V

  • SaltiDawg
    Original Author
    13 years ago

    veesubotee,

    Clearance on the side will not be restrictive. This is like a 20' X 20" screened porch deck. Over 8' off the ground.

    paulbm,

    While Carrier says I need 48" clearance above and I've got over 58", I have nagging doubts that paralel your comments.

    Both of the Carrier bidders and the Trane bidder were OK with it as it met the Carrier "Specs." (I think the Trane had a solid deflector on top anyway.) I am settled on Carrier.

    Does any one have actual experience with mounting an outside unit under a deck? Results?

    Jerry

  • hvaccontractor
    13 years ago

    Bad idea, paulbm is right. And what the manufacter will not tell you is if there is a problem with your unit they can choose not to warranty any parts in the futher. I did have a warranty issue on a unit with 8' of clearance under a deck. Had to relocate and replace compressor motor on three year old unit.

  • SaltiDawg
    Original Author
    13 years ago

    hvaccontractor,

    Thanks for that info. You installed the unit with the clearance specified as required by the manufacturer and they refused to honor the warranty?

    Which manufacturer? I would not deal with them.

    Sounds as if I will not install the unit where I wanted.

  • maryland_irisman
    13 years ago

    Hey there Saltidawg,

    I have to agree with the other guys here. Even if you meet the minimum clearances, you will not get optimum performance. I can assure you, on those hot, humid, very still Rockville days and nights, the unit will recycle warmer condenser air that will accumulate under the deck and end up running hotter and longer. Shade is great but unimpeded and un-deflected overhead clearance will save you money and wear and tear in the long run.

    You may have seen the utilities are already asking for rate hikes. You want to squeeze as much out of that thing as you can.

  • tigerdunes
    13 years ago

    saltidaug

    maryland irisman is correct on all counts. you are inviting trouble/problems if you proceeed.plain and simple, this is jusy a bad idea.

    IMO