My panasonic a/c model cw-806tu/7800 btu. does not get cold, can i change freon?

check the outside and see if its blowing cold air out of condensor otherwise low on freon.

is your filter dirty? i could see it stoping if the filters dirty. check the filter and if that is not it take it into a shop or send it in. if it cost's more to fix it just forget about it and get a new one good luck.

11,500 Btu/h (at 115V)
10.0 energy efficiency ratio
IC thermostat control allows for precise, sensitive temperature control
12-hour delay START/STOP timer lets you select start or stop time up to 12 hours in advance

The larger tube is the return tube for the hot freon gas from the evaporator. The small tube is the cold freon after is has gone through the condenser where gas is condensed to a liquid when the heat is removed. So I would say your system is low on freon.

The compressor is not working. Only the fan. No you can't put water on it to make it blow cold air. The compressor is what makes it blow cold air. If you are interested in trying to troubleshoot it let me know. It is not that easy but if you are patient and a little mechanically inclined you may be able to do it.

mcdevito75 here, have your local a/c shop check it out they come to the house. You can check to make sure you have the unit on cool and that the filter is clean. Unit could use serviceing if not done in 2 years, specific cleaning and a charge of freon gas.

does it freeze up? this could be a sign of low freon. does the fan turn on? if not the compressor will get hot and shut itself down on overload the fan can be easily replaced for around 100.00

air conditioning units are measured in btu's stands for
(British thermal units)

6,000 BTUh to 10,000 BTUh will cool 400 sq.ft approximately

10,000 BTUh to 16,000 BTUh. will cool about 800 sq.ft approximately

16,000 to 28,000 BTUh will cool 2,000 sq.ft approximately

the idea is more but's the more cooling power it will have.

this can be done if your a good hand at soldering. You need to put a inlet valve in the unit so you can put freon in this is kind of a tricky job most of the time it's easier to take it to the repair shop and let them put the valve on then after that you can recharge the freon on your own..........I hope this was helpful...... : )