Can an AC unit overheat?

Yes, an AC unit can overheat, and Phoenix summers can put tremendous stress on cooling equipment. But a properly operating system is designed to run in extreme heat. If yours is overheating, shutting down, tripping a breaker, or struggling to keep up, there’s usually an underlying reason. Here’s what our Good Guys in Green look for.

What causes an AC to overheat?

Your AC works hard during a Phoenix summer, but heat alone usually isn’t the whole story. Restricted airflow, a dirty condenser coil, failing electrical components, motor problems, low refrigerant conditions, or other mechanical issues can cause components to run hotter than they should. The important part is figuring out why it’s happening instead of simply resetting the system and hoping it doesn’t happen again.

Signs your AC may be overheating

• The system shuts itself off unexpectedly
• The breaker repeatedly trips
• The outdoor unit is unusually hot or making strange noises
• You notice a burning or electrical smell
• The system runs but struggles to cool the home
• It shuts down and works again after cooling off

If a breaker keeps tripping, don’t continue resetting it. That’s the system telling you something needs attention.

Is it just too hot outside for my AC?

Phoenix heat makes your AC work harder, but extreme temperatures don’t automatically mean something is wrong. On very hot days, systems may run for long periods and indoor temperatures can be harder to maintain, especially in homes with poor insulation, duct leakage or other efficiency issues. But repeated shutdowns, breaker trips, burning smells or other abnormal operation should be checked.

What the Good Guys check

• Condenser coil condition & outdoor airflow
• Compressor and condenser fan operation
• Capacitors, contactors & electrical connections
• Refrigerant pressures & system performance
• Indoor airflow & filter condition
• Signs of excessive amp draw or overheating components

When it’s time to call in backup

1. Your AC shuts itself off unexpectedly
2. The breaker trips more than once
3. You hear unusual noises or smell something burning

Don’t keep resetting a tripped breaker. If it trips again, leave it off and have the system checked.

Thank you for getting this done so quickly for us. You can not go wrong with this company. Chris the owner is just a great human and goes the extra mile to make his customers happy.Ravelle O., Phoenix, AZ

AC shutting down in the heat? Call the Good Guys in Green. We’ll find out what’s causing it and give you straight answers before any repair begins.