Verified answer

You can't....If you don't have the gauges and tools to check it with...Call a hvac tech

There is no accurate way to check the charge. However, you can check the tempurature coming out of a register compared to the tempurature of air going in. Generally, if there is at least a 15 degree drop you have sufficient charge. If you have freon your unit is pretty old. Freon is known in the industry as R-12. It is a Chloroflourocarbon. CFC. Which the EPA has banned the manufacture of. If you need more r-12 added it will be expensive as the only r-12 left is that which has been pulled out of other units. If your ac can't cool your home you may need to look at getting a newer more energy effecient unit. The new units will either take R134a or a blend of newer refrigerants such as R410.

I guess you mean FREON. The only way to determine if the unit has the right amount of freon is with a freon pressure gage instrument. This is not a task for the average fixer upper or handy man. if you do not have the right skills an instrument to do this or to load freon...then you will need to call one of those money hungry AC techs in your city. Good luck...! Just make sure that the one you call is not due on his mortgage or new BMW payments. he'll empty your pockets...! Good luck...!

It sounds such as you're baking!! A 2 ton unit in Florida? must be an rather small domicile. If no longer over 800 to a minimum of one thousand sq. ft( for that section) it sounds undersized to me. A attic fan will shrink the warmth load the a/c is attempting to head. Its a much less severe priced direction of action to start. shop the air shifting with ceiling followers additionally. Air flow is best to feeling cooler. stable success! particular, you've the two ridge vent and attic followers.

You use gauges to check the pressures of the gases. You then measure the line temperatures of the gases. You take indoor air temp and outdoor air temp. You determine proper superheat temp based on these readings. You then subtract saturation temp which is determined by the gauges from actual temperature to determine superheat. Compare actual superheat to required superheat to determine if you are over or under charged. If the unit is a txv unit you use liquid line temp with saturation temp of the liquid line and determine subcooling instead of superheat.