07:01AM | 06/08/04
Member Since: 06/07/04
2 lifetime posts
I have security bars on all my apartment windows. For the past few years, I put my window a/c in the largest windowsill I have, but the entire unit remains inside the apartment. It does make a difference in cooling the apt. Any ideas on how to make this work better other than moving to a new apt?

I have shields on both sides of the unit, not sure if it's helping at all. I clean the filter regularly.


02:28PM | 06/08/04
Member Since: 11/11/02
2293 lifetime posts
** the entire unit remains inside the apartment **

Most window air conditioners have side louvers on them. Those side louvers are designed to suck in outdoor air and blow it out through the condenser at the rear again to the outdoors. That is how an A/C gets rid of the heat.

If those side louvers are inside your apartment, your a/c is sucking in your cold room air and blowing it outdoors!

That would create negative pressure in the room which would cause other air (from the outdoors or the apt. halls, etc.) to replace what's lost. If the new air isn't cooled already, it will just help to reheat the room again.

The only way you'd be able to properly cool a room with most of an A/C inside would be to find an a/c model that both sucks in and blows out *only at the rear*. Those are usually limited to thru-the-wall models but you *may* be able to find a window model which works that way (but don't hold you breath).

The only other option is to purchase a portable model (see the following link) where they only need a small dryer-type nylon vent leading to the outdoors. That type too robs room air and blows it to the outdoors though.


** I have shields on both sides of the unit **

BTW. Do NOT just block off those side louvers as then the condenser (hot part) will have no air movement to remove the heat with. That will create high 'head' pressure in the refrigerant system likely leading to premature compressor failure ($$$) and won't work well (if at all or for long).


Dan O.

The Appliance Information Site



06:17AM | 06/09/04
Member Since: 06/07/04
2 lifetime posts
DanO, your information is greatly appreciated.


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