AC Gas Refill
Also called AC gas charging
An AC refill removes the old refrigerant and moisture, vacuums the system to check it holds, then recharges it with the exact weight of gas and oil the manufacturer specifies. Refrigerant is not consumed in normal use, so a system that is low has a leak. A refill on its own is a temporary measure unless that leak is found and repaired, and we will say so before taking the job.
What the job includes
- Pressure reading of the existing system before any work
- Recovery of the old refrigerant with a recovery machine
- Vacuum hold test to confirm the system is not leaking badly
- Recharge with the specified refrigerant type and weight
- Compressor oil topped to specification where required
- Vent temperature and pressure check after charging
Signs you need this
- Cooling has faded gradually over a season
- Air is cool but never cold, even with the fan on full
- Compressor clutch switches on and off rapidly
- AC cools at speed but not while standing in traffic
- System was opened for another repair and needs recharging
Not all of these have to be present, and one of them on its own can mean something else entirely. That is what the diagnosis is for.
How we do it
Read the pressures
Gauges on the high and low sides show whether the system is undercharged, overcharged or blocked before anything is added.
Recover and vacuum
Old gas is recovered and the system is pulled into vacuum, which removes moisture and reveals whether it holds.
Charge by weight
Refrigerant is added by weight to the manufacturer's figure, not by guesswork, because overfilling reduces cooling and strains the compressor.
Test the result
Vent temperature, pressures and fan operation are checked with the engine idling and at driving speed.
How we work
The same on every job, which is why we can write it down.
Diagnosis before quote
We find the fault first. A price given over the phone for a noise nobody has heard is a guess.
The price is agreed first
You approve the work and the cost before a spanner is picked up. Extra work means another call.
Parts you can check
We tell you whether a part is genuine, OEM, aftermarket or used, and what each one costs.
Old parts returned
Ask and we will hand back whatever we replaced. It is the simplest proof that the job was done.
Book ac gas refill
Fill this in and a person will call you back to confirm the time and the price. Only your name and one way to reach you are required.
Before you book
Questions we get asked
If your question is not here, ask it. We would rather answer honestly now than have you find out after booking.