As often as its needed to get the room set to your set tempature.
82
5yrs
Never. A properly operating AC unit will have no leaks, thus never need recharging.
That depends on a number of things including: how hot is it outside, inside, is it functioning properly, is it sized properly?
If you have to ask this question, you should not be doing this job.
70-85/ 350/290
You should leave your air conditioner set on 80 degrees when you go away on vacations. I you have a programmable thermostat for your air conditioner set it to lower the temperature to 70 right before you get home.
The first air conditioner for the home was available in 1928 when Willis Haviland Carrier developed the 'Weathermaker', an air conditioner for private home use.
Often when a vehicle air conditioner gets loud, the problem is due to a belt. You should take the car in to have the belt checked.
If your air conditioner blows air but it's not cold air then you probably need freon in your air conditioner
A good place to buy an affordable, but reliable air conditioner would be Sears and a home store such as the Home Depot. These stores also often do price matches and offer good warranties.
The amount of time you run the air conditioner depends on how often you should change the filter. Generally you should change the filter at least once every 5-6 months of use.