GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter X Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

lowest operating temp

cbut8995 | Posted in General Questions on

The minsiplit from Gree that was already installed in the investment properties we just bought say on the manual they can all operate down till -4. Do you think this is enough for Brooklyn New York weather? It doesnt really ever get below -4 but id imagine it could feel colder if it gets near to that point. 

I dont ever want the call that the heat went out and then I end up having to buy a bunch of temporary electric heaters like I did 1 time in the past but that was a boiler issue that was able to be resolved quickly. 

GMV-24WL/C-T(U) for the 1 bedroom unit
GMV-28WL/C-T(U) for the 2 bedroom unit

GBA Prime

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.


  1. Expert Member
    Michael Maines | | #1

    The 99% heating design temperature at La Guardia is 18.4°F; at JFK it's 18°F. That means that 99% of the time in an average year, the outdoor temperature will be higher than that. The 99.6% temperatures at those locations is 14.1 and 14.4°F. It may get down to -4°F on rare occasions but it should be for very short periods of time.

  2. cbut8995 | | #2

    And even if it gets down to -4 it wont shut off, it would just run less efficient?


    1. Expert Member
      DCcontrarian | | #5

      It won't shut off. The quoted figure is where the coefficient of performance drops below 1.0 -- the unit consumes more energy than it puts out in heat. At that temperature and below it's more cost effective to heat with resistance heating.

      1. cbut8995 | | #7

        What would you suggest for resistance heating? Not sure how we can add it now since its all pre built and we purchased the entire condos like this.

  3. cbut8995 | | #3


  4. bfw577 | | #4

    That Gree has really bad cold weather performance and has lost half its rated capacity at 5 degrees. Brooklyn does occasionally see temperatures in the single digits and teens. If there is no other source of heat I suspect it will have trouble keeping up in more severe cold. How big are the places? If your talking like a small 600 sqft NYC studio it night be fine.!/product/34010/7/25000///0

    1. cbut8995 | | #6

      So if it loses half its capacity will it heat enough for the apt? I dont see how I can change it now since its all prebuilt etc.

      So the condo unit came with an 1 outdoor unit (GMV-24WL/C-T(U) ) connected to 2 one way cassettes. Its definitely oversizesd The entire apt is about 550 sqft and its 1 9K unit inside the bedroom and 1 9k unit inside the living room/kitchen.

      The other apt we purchased is about 700 sqft but the living room has double height ceiling about 18 feet tall and has 3 indoor units to 1 outdoor unit GMV-28WL/C-T(U). one 7k unit in the bedroom, one 12k unit in the living room, and one 9k unit in the mezzanine area.

Log in or create an account to post an answer.


Recent Questions and Replies

  • |
  • |
  • |
  • |