Refrigerant doesn't deplete like fuel — if it's low, there's a leak. Recharging without finding the leak is wasted money. A specialist tests pressures with a gauge and locates the leak before charging.
See if any of these signs match your device — each one increases the likelihood of this fault.
These are the causes we encounter while repairing AC refrigerant recharge — ranked from most to least common.
Leak at the copper flare fittings from poor installation
Leak in the indoor evaporator from humidity corrosion
Leak from the service valves on the outdoor unit
Leak from the condenser coil due to impact damage
Loose Schrader valve in the service port
Any of the following = a danger signal — call now and don't try to fix it yourself.
On-site diagnosis, clear pricing before any work, and a documented 6-month warranty.