Image from Freepik.com If your AC unit is not blowing cold air, it may be because of a leak in the system. An AC line leak is a common type, which can be fixed by repairing or replacing the line. Other types of leaks can also be fixed, such as a capillary tube leak or a defective condenser. Knowing where to find and fix these leaks is essential for keeping your home comfortable. What is an AC leak and what are the signs? An AC leak is when air conditioning fails to operate as intended. The most common sign of an AC leak is the smell of gas or fumes. If you smell gas, there is likely a leak. Other signs may include drafts, strange noises from the unit, and a decrease in air conditioner efficiency. To check for an AC leak, you will need to remove the unit's cover and check for any missing or broken seals around the unit's exterior. Causes of AC leaks There are many possible causes of AC leaks. Examples include defective seals, corroded parts, and missing or incorrectly installed