What should I do if my AC is blowing warm air intermittently?

Intermittent warm air usually means an airflow, thermostat, or refrigerant problem. Start by setting the thermostat to Cool, then try a few quick checks below. If issues persist, schedule a diagnostic. Our licensed, background-checked techs give upfront pricing and explain options. Many repairs start immediately thanks to fully stocked trucks. We provide same-day and 24/7 emergency AC service in Glendale Heights, Schaumburg, and nearby.

• Replace a dirty air filter.
• Clear leaves or debris around the outdoor unit.
• Verify breakers are on and supply vents are open.

Updated: 2025-12-24

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