Results 1 to 3 of 3

Thread: Hissing ASHP

  1. #1
    Join Date
    Apr 2012
    Location
    uk
    Age
    53
    Posts
    6
    Rep Power
    0

    Hissing ASHP



    Recently my ASHP has started to hiss when it starts up and expels warm moist air (my glasses steamed up) before running cold after a few minutes.

    I've never noticed it hiss or expel warm air - is this normal or is something going wrong with the heat pump?



  2. #2
    Join Date
    Feb 2007
    Location
    UK
    Posts
    2,477
    Rep Power
    38

    Re: Hissing ASHP

    Assuming you are standing in front of the outdoor unit then it sounds like it is going through a defrost period.

    Further assuming that it is still providing hot water and heating as desired then this is perfectly normal.


  3. #3
    Join Date
    Apr 2012
    Location
    uk
    Age
    53
    Posts
    6
    Rep Power
    0

    Re: Hissing ASHP

    Thanks Viking - that's a relief!

Posting Permissions

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