Forum Discussion

tshirtman's avatar
tshirtman
Explorer
Nov 22, 2013

Air conditioner size

Will a 13.5 AC be enough for a 29ft trailer?
Most temps under 100 but occasionally up to 105
thx
  • What makes the answer even more complicated is that one can have too LARGE an a/c because if it cools too fast it doesn't dry the air and you end up with cool clammy air! I vote for 13.5.
    We also find an oscillating fan helpful to move the cool air around.
  • Will a 13.5 AC be enough for a 29ft trailer?
    Most temps under 100 but occasionally up to 105
    thx


    Depends on a lot of things. Is the TT in the shade or sun, how fast do you want it to cool off, humidity, wind, insulation of the coach, and how cool do you want it? I have been in the California delta at over 100 degrees in the sun (no shade) and 13.5 was able to keep the inside of our fairly well insulated 30 foot TT about 25 degrees lower than outside ambient. I don't think trying for more than about 25 degrees is realistic with a 29 foot TT and one 13.5 AC.