It can be really frustrating when your air conditioning stops working like it should on a hot and humid day. Unfortunately, it’s often on especially hot days that ACs cease to work properly as higher temperatures put a strain on their ability to produce cold air. This uncomfortable and perplexing problem could be the result of many possible causes. Here are three common reasons that could cause your AC to blow air that’s too warm.

1. Low Coolant

In addition to having the right amount of coolant, it has to have the right amount of pressure. Typically, the cooling agent inside of newer ACs isn’t supposed to run out. If you do experience low coolant levels, it will generally be after a period of many years since your levels were last calibrated. Inadequate coolant could indicate a leak.

Checking and refilling coolant for an AC isn’t as simple as it is for your car’s engine. A professional technician can help you verify whether your tank is holding coolant at the correct PSI. For help with AC repair Walnut Creek CA, reach out to a reliable service company that can help you measure your system’s coolant.

2. Dirty Evaporator Coils

Evaporator coils in an air handler that haven’t been cleaned will invariably become clogged with dust and debris. Professional cleaning will correct the issue and enable air to pass through them again.

3. Rusty Condenser

When a condenser outside has been exposed to the elements for many years, the grate-like material inside will become heavily oxidized and rust. Instead of the traditional brown color that you associate with rust, it’s common for homeowners to see that the components inside of their condenser have turned white.

The material will eventually crumble, and the space where air once passed through will be obstructed by blocks of rust. When a condenser is in this type of condition, replacement may be the best option.