An A/C man came and he didn't do any measurement at all.
He looked at the A/C unit and said "it's too old, you just waste your money if you have it service and will not last long".
He told me I need to buy a 2.5 tons, 12 seers (don't know all that stuffs), and it'll cost between $1,200 and $1,400 depend on the brand. If I want RUDD brand, then it will cost around $1,250.
Someone had said the a/c needs to match with the air handler (probably the heater, I supposed) but the a/c man didn't say anything about it.
I didn't have to pay him because his ad says "free estimate". I'll call another a/c man just to get another estimate.
I don't know will I ever find someone who would measure windows type size, location, insulation, construction etc...
I know I need to get it either fixed or replaced because I have been staying at the motel for the last two nights.
Thanks for all your help.
Kim