<div dir="ltr">I have a fair amount of experience with these sorts of units. As has been mentioned earlier, they're pretty noisy, and not terribly efficient. <div><br></div><div>Simpler units have just a single output hose and a condensate tank/pump. Slightly less simple units will send that moisture out via the hot exhaust.</div><div><br></div><div>Fundamentally, there are two inputs and two outputs - evaporator in/out, which absorbs heat from the conditioned space and outputs cool air, and the compressor in/out, which takes outside (unconditioned space) air and exhausts the heat from the compressor coil.</div><div><br></div><div>Most simpler units combine the compressor and evaporator intake - which leads to negative air pressure in the conditioned space (because all intake air comes from the conditioned space), and outside (unconditioned) air leaks in through any available aperture (or the room approaches a vacuum), and therein is a big source of inefficiency.</div><div><br></div><div>If your office has forced-air ventilation, but just doesn't have enough airflow, perhaps a duct booster blower like this would help?</div><div><br></div><div><a href="https://www.homedepot.com/p/VENTS-US-162-CFM-Dryer-Booster-Fan-with-4-in-Duct-VENTS-VK-100-PS/206398496">https://www.homedepot.com/p/VENTS-US-162-CFM-Dryer-Booster-Fan-with-4-in-Duct-VENTS-VK-100-PS/206398496</a><br></div><div><br></div><div>Of course, if your office is pretty dry while hot, you could employ some evaporative cooling.</div><div><br></div><div>-Peter</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Aug 24, 2021 at 2:10 AM Brian Kemp <<a href="mailto:bk13@earthlink.net" target="_blank">bk13@earthlink.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
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.<br>
<br>
Too loud to use while sleeping. The single duct exhausted the
conditioned room air outside like a powerful exhaust fan.<br>
<br>
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.<br>
<br>
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.<br>
<br>
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.<br>
<br>
Brian<br>
<br>
<div>On 8/22/2021 4:23 PM, Tim . wrote:<br>
</div>
<blockquote type="cite">
<div style="font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
Does anyone here have any experience with said appliance? </div>
<div style="font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
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?</div>
<div style="font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
thanks</div>
<br>
<fieldset></fieldset>
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