A new twist on Air Conditioner hot air exhaust

BogieMeister

After reviewing MarkHelman's external AC exhaust mod, I decided to modify the thought a bit. I purchased the plastic vents he described, but, being old and forgetful it would only be a matter of time before I forgot to remove them before towing. Which would result in buying two new vent covers. I assumed the intent is to separate the hot exhaust from the incoming cooler air. While examining the system I noted that there is a considerable gap between the AC unit and the outside vent. So, I opted to fill the gap. Testing will have to wait until the temps get back up in the 90s.

jgram2

Old and forgetful maybe, but still making good cuts. Will look forward to their effectiveness come summer!

Dalehelman

May I suggest adding something like this . To help direct the hot exhaust air away from the center intake. They are Not permanently and are removed for travel. We have used them for 3 years. I believe they increase efficiency by as much as 50%. By the way nice wood working .I took kind of a short cut..

rfuss928

Dalehelman said:

May I suggest adding something like this . To help direct the hot exhaust air away from the center intake.

Most window AC units including those used in T@Bs draw the cool air in the top and sides of the case and exhaust through the rear condenser. 

Anything to help keep these air flows separate will improve efficiency.

BrianZ

Hey @Dalehelman , I was wondering what is the purpose of the mast you show mounted near the roof?

Dalehelman

@BrianZ
That was an early digital TV antenna I was testing. I found it at a dollar store in Lake Havasu AZ. Actually worked pretty good. Later I replaced it with an Omni directionl one with a 12 volt amplifier.