Yes.
overcharging a central air unit system with refrigerant(freon) will cause the head pressure to be?
The refrigerant (freon) in any air conditioner should last the life of the unit. If not, you have a leak.
nowhere
There are a few reasons why a central air unit is not blowing cold air. The coils may be dirty, the unit may need freon, or the thermostat could be broken.
That sounds reasonable to me. I have in my home, a very large (22,000 BTU) through-the-wall air conditioner, designed to cool three large rooms. It uses 3.5 lbs of freon. A whole-house unit I can easily see using as much as 9 lbs.
Never, unless you have a leak.
It means that the unit is low in freon and the line temperature is to low.
depends on freon type,quanity,hourly rate of hvac co.
Freon is stored in the compressor unit of an air conditioning system.
To buy ac Freon you need to be certified and to add ac Freon to central air conditioning unit is risky.The air conditioner filters are normally located in return duct grills or in the air handler. Read how to change air conditioner filters.
no. How could you have a leak without a leak? There's a hole in the system somewhere.
They use R410a eco friendly refrigerant gas now.