[Shop-talk] "portable" AC units

[Brian Kemp]

I bought a single duct portable AC for a bedroom that had a sliding 
window in a house without AC.  The duct is similar to a dryer exhaust 
and can be permanently mounted in the wall like a dryer or bathroom 
exhaust vent.  This unit had a 4" duct.

Too loud to use while sleeping.  The single duct exhausted the 
conditioned room air outside like a powerful exhaust fan.

In a network closet at work they installed a better unit with 8" supply 
and return ducts and a condensate pump.  It is even louder to the point 
that you can't have a conversation nearby, but does keep the room at 65 
deg.  This unit is installed with both ducts going to a bracket that 
mounts in the suspended ceiling.  They had to get a plumber to run a 
drain line for the condensate pump.  An electrician also had to install 
a dedicated 20A circuit.

I'd encourage other solutions.  Had problems with no air in my office 
and finally got a facilities guy to take a look.  It turns out they ran 
some big conduit for lots of network cables and the supply duct was in 
the way, so they just disconnected it and the duct was blowing cold air 
above the ceiling.  The guy moved the supply grill to a different 
ceiling grid location and reconnected the duct.  Maybe you can get this 
lucky.  Most offices also have a baffle or damper to balance air flow.  
Maybe yours is shut because the previous person found it too cold.

I've also seen people take a box fan and use some coat hanger wire to 
attach it to the ceiling return grid to serve as an exhaust fan, 
removing hot air from the office.

Brian

On 8/22/2021 4:23 PM, Tim . wrote:
> Does anyone here have any experience with said appliance?
>
> My main wonder is where does the exhaust go? Does these things have an 
> exhaust "port" that I can hook a hose up to and run it where ever?
>
> thanks
>
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