Direct answer: Running nonstop during a heat wave is normal for a healthy AC system, not a sign of failure. What's not normal is a system that runs constantly and still can't get within 3 to 4 degrees of the set temperature, or one that suddenly stops keeping up. That gap is when to call Rick, not the running itself.
At a Glance
Tampa Bay has had heat advisories on and off through most of July, with heat index values hitting 110 and highs tying the record set back in 1992. A layer of Saharan dust has been sitting over the area too, which is part of why the sky's looked hazy and rain hasn't been showing up to cut the heat.
None of that is normal wear-and-tear weather. It's the kind of stretch that finds every weak point in a system, and Rick would rather you know what to watch for than find out the hard way at 9pm on a Friday.
Your System Isn't Broken Just Because It's Running Constantly
In heat like this, a healthy AC is going to run nearly nonstop during the day. That's the system doing its job, not a sign of failure. The house is losing the fight against outside heat faster than usual, so the system has to keep working to hold the line.
What's not normal is a system that runs for an hour straight and is still more than 3 or 4 degrees off the set temperature, or one that used to keep up fine and suddenly can't. That gap is what tells you something's actually wrong versus the system just working hard.
Why Extended Heat Is Harder on Equipment Than a Normal Summer Day
A single hot day doesn't stress a system much. A stretch of days at 95-plus with the compressor barely getting a break is different. Parts that were already close to failing, an aging capacitor, a compressor with worn bearings, tend to go during a run like this, not during a mild week in October.
Rick sees this pattern every summer. Calls slow down when it's 88 degrees and spike hard during a heat wave, because the equipment that was going to fail this year usually fails under load, not at rest.
Change Your Filter More Often During a Stretch Like This
A dirty filter makes the system pull harder to move the same amount of air, and Rick's seen that show up as real strain on a system that's already running nonstop in the heat, not just a minor inefficiency. If you're on the standard 30-day filter schedule, a heat wave is a good reason to check it at the halfway point instead of waiting the full month.
Don't Compensate by Setting the Thermostat Lower Than You Need
Dropping the setpoint from 74 to 68 during a heat wave doesn't cool the house faster. The system runs at one speed regardless of how low you set it, so all a lower setpoint does is make the system run longer to reach a colder target it may never hit on the hottest days. Set it to a temperature that's actually comfortable and let the system work toward that.
What the Saharan Dust Actually Changes
The dust plume itself doesn't affect your AC. What it changes is the weather pattern: drier air, fewer afternoon storms, and heat that sticks around longer than it would with normal summer rain breaking it up. That's more days in a row of the system working hard, which is why this stretch has felt different from a typical July.
Signs the Heat Has Found a Real Problem, Not Just Normal Strain
The clearest tell is a system that runs constantly and still can't close the gap to the set temperature, or one that used to keep up fine and suddenly can't. If you're seeing that, or anything that feels like a real emergency rather than just a hardworking system, Rick breaks down exactly what counts and what can wait.