Hi all - I'm hoping someone might be able to provide guidance.

We live in a COOP building in NYC and our apartment has two ACs, one in the bedroom (around 300sq ft) and living room (around 450 sq ft). The ACs that came with the apartment were not energy efficient and old. However, they worked really well and would cool the apartment down very quickly. Sometimes we would have to sleep under the sheets because the bedroom would get cold very quickly (in less than 30mins).

We decided to replace the ACs because our energy bill would be very high in the summer and also the one in the bedroom started leaking. The super provided specific dimensions to replace these wall ACs (W 27 1/2, H17, D16).

We finally found AC's that would fit the dimensions and ordered/installed the following:

• Bedroom - 8000 BTU - Model WS08C10D by Friedrich
• Living Room - 11500 BTU - Model WS12C10D by Friedrich

After they were installed, both AC's do not cool the room down one bit. We will leave them running all night and wake up sweating. It seems like they are just on the fan setting. We contacted the company (AJ Madison) where we purchased this and they sent another company to fix this. An installer came over, and said he fixed the bedroom and had to come back for the AC in the living room. He mentioned something like we live in an old building and he needed to check with his manager.

It's been over a week and we haven't heard back. I can't believe that both models don't work which leads me to believe it is something from with Friedrich. It's getting very hot and difficult to live with non-working AC's. Ideally we'd like to see if this could be fixed before we return them. If anyone has any idea what might be going on (should we get a higher BTU AC or a different model, or install a window AC into this wall opening?).

Sounds like an installation problem.

Could not find that model number.

Found model WS0810D but not WS08C10D

Is this a ductless model?

Yes this is ductless.

Here are the models we purchased from the website.

Living room:

Friedrich WS12C10D 11,500 BTU Thru-the-Wall Air Conditioner with 9.8 EER, R-410A Refrigerant, 3.1 Pts/Hr Dehumidification, 24-Hour Timer, Money Saver Setting and Remote Control

Bedroom:
Friedrich WS08C10D 8,000 BTU Thru-the-Wall Air Conditioner with 10.4 EER, R-410A Refrigerant, 1.2 Pts/Hr Dehumidification, 24-Hour Timer, Money Saver Setting and Remote Control

When you say it sounds like an installation problem, then it was not installed correctly?

You have to remove the cover and clean these units with coil cleaner and water. It's a messy job, but has to be done at least once a year. You also have to clean the outside unit and oil BOTH fan motors, plus clean the blades. With through-the-wall and window units you just remove them and take off the covers on top of the coils and then clean with coil cleaner and lots of water. You buy the alkaline coil cleaner (liquid sodium hydroxide) and I cut it 50-50 with water in a plastic pump sprayer. Do not try to go half-a__ with this or it will be useless. Clean the fan blades well and make sure that the drain gets cleaned well. You will have to clean it several times to get it clean. Have a good wet-vac because you will need it, and have a sheet of plastic and cloth (to soak up water) under where you are working. The little drain will not handle all of the water you will have to use. Make sure you can see the drain pan on the inside unit to get out the sludge with the vacuum cleaner. Sometimes you will have to make an extension with a smaller piece of hose pipe to get in tight places. Make sure you keep the water out of the inside fan motor and off the CAPACITOR as a little water shorting out the capacitor will burn up the motor. I spray the capacitor terminals with WD-40 and dry it off and wait a while before starting up the unit. After it's clean it will cool better than it has since it was new. Letting it keep running when dirty will ruin the valves in the compressor which will require a new one. Get the best air filter you can buy. Buy an oiler for fan motors at an appliance parts store for about $3.00 along with the coil cleaner and pump sprayer. Use thick rubber gloves, a face shield, and an apron when working with this cleaner. Keep away from children and use a respiratory mask, too, to keep from breathing in mold spores which can make you very sick with pneumonia that needs steroids and antibiotics to get rid of. If this is a wall unit you should remove it and take it outside and clean it. Then you can tip it on its side to dump out the water (This will not hurt it at all.).