Common AC Problems in Arizona and How to Prevent Them

July 8, 2025

Living in Arizona means your air conditioner doesn’t get much of a break—especially during the hottest months. The constant demand on your system can lead to a number of common issues that affect performance, efficiency, and comfort. At Rim Country Mechanical, Inc., we want to help you recognize these problems early and understand how to prevent them, so you can stay cool all summer long.

Clogged Air Filters

Dust is a year-round issue in Arizona, and it builds up fast in your system’s air filters. When filters get clogged, airflow is restricted, causing your AC to work harder than it should. This leads to reduced cooling and higher energy bills. The best way to prevent this is to change your air filter regularly—typically every 1 to 3 months depending on usage and air quality.

Low Refrigerant Levels

Your AC relies on refrigerant to cool the air, but leaks can develop over time, especially under extreme heat. Low refrigerant doesn’t just impact comfort—it can also damage your compressor if not addressed promptly. If you notice warm air blowing from the vents or ice buildup on the coils, it’s time to have your system inspected by a professional.

Electrical Component Wear

High temperatures take a toll on your AC’s electrical parts, including capacitors and contactors. When these components start to wear down, your unit may have trouble starting or may stop working entirely. Annual maintenance is key to catching electrical issues before they lead to costly breakdowns.

Dirty Condenser Coils

The outdoor unit can get caked with dirt, debris, and even vegetation, which prevents heat from escaping efficiently. This forces the system to overcompensate, leading to increased wear and tear. Keeping the area around your outdoor unit clear and scheduling seasonal cleanings can help maintain optimal performance.

Inconsistent Thermostat Readings

A malfunctioning or outdated thermostat can cause your system to cycle too often or not enough, leaving you uncomfortable. Make sure your thermostat is installed away from heat sources and consider upgrading to a programmable or smart thermostat for better temperature control.

Stay Cool with Our Help!

At Rim Country Mechanical, Inc., we specialize in keeping Show Low homes cool and comfortable, even in the toughest Arizona heat. If your AC system is showing signs of trouble or hasn’t been serviced in a while, give us a call. Let us help you prevent problems before they start—schedule your professional inspection or AC tune-up today.