Why Your AC Needs Gas Refilled Every Year (Signs of a Leak)
Quick answer: If your AC needs gas every year, it has a leak. A correctly sealed system holds its refrigerant charge for the life of the unit — repeated top-ups are treating a symptom, not the cause, and cost more over time than fixing the actual leak.
The Most Common Leak Points
Schrader valves (the small access points used to fill refrigerant) are a frequent leak source, especially after previous refills where the valve wasn’t properly resealed. Pipe joints, especially on units near the coast where salt air accelerates corrosion, are another common point. Less often, the evaporator or condenser coil itself develops a micro-fracture.
Signs You Have a Leak, Not Normal Wear
Cooling that gradually gets weaker over weeks or months (rather than failing suddenly), ice forming on the indoor unit’s coil, or a hissing sound near the outdoor unit are all signs of a slow leak. If your technician has refilled your gas more than once without mentioning a leak test, ask directly whether one was done.
Why Repeated Top-Ups Cost More
A single refill without leak repair might cost less upfront than a proper leak-and-seal job, but multiply that by two or three visits a year and the honest math flips — finding and fixing the leak once is usually cheaper than paying for gas repeatedly.
Our AC Gas Refill service always includes leak detection before recharging, from 25 BHD.