Possible causes when your AC runs constantly without cycling off — and when to call for help.
An AC that runs continuously without cycling off is wasting energy and wearing out faster. Normal operation is cycles of 15-20 minutes on, then 5-10 minutes off. If your system runs nonstop, it's working harder than it should to maintain temperature.
On extremely hot days (100°F+), constant running can be normal — your system is working at maximum capacity. But if it runs all day even when it's 90°F outside, check these: a dirty air filter restricting airflow, low refrigerant from a leak, a dirty or blocked condenser outside, leaky ductwork losing cooled air, poor insulation letting heat in faster than the AC can remove it, or an undersized system for your home.
If your thermostat is in direct sunlight, near a heat source (oven, lamp), or on an exterior wall, it may read the temperature higher than the actual room temperature, causing the AC to run longer than necessary. Moving the thermostat to an interior wall away from heat sources can solve this.
An AC that runs 24/7 can add $100-200/month to your electric bill compared to normal cycling. It also puts extreme wear on the compressor, which is the most expensive component to replace ($800-$2,500). Getting the issue diagnosed now can save thousands in the long run. Call ARP Heat And Air for a diagnostic — Charlie will tell you exactly what's wrong and what it costs to fix.
At ARP Heat And Air, we've been helping Oklahoma homeowners with their HVAC needs since 2011. Our owner Charlie brings 14+ years of hands-on experience and is known for giving honest, practical advice — not trying to upsell you on services you don't need.
If you have questions or need HVAC service in the OKC metro area, give us a call at (405) 413-0583. We offer free estimates, same-day service, and 24/7 emergency response.
Based in Edmond, OK, we serve 35+ cities across the Oklahoma City metro area. Oklahoma CIB License #00125054. A+ BBB Rated.