Sounds like a low charge.

Have a service company come and put some gauges on the condenser.

You need a seasoned pro to check out system. You should be able to tell if compressor is kicking on just by listening.

If not it could be a severe refrigerant leak.

Those are the areas that tech should eliminate as possibilities.

Sorry for your trouble and obvious discomfort.

BTW, has system given trouble before and when was last time system was given a routine PM check by a dealer?

IMO

I just got my new air conditioning system for my house.after the installation,after a week i wont get cold that supposedly what is it has to be doing.

Here is a link that might be useful: Ventilation Services?

dtair,

You should start a new thread if you are asking for help.