Getting Your AC to Actually Hit Its Rated Performance
Every AC system has a manufacturer performance spec: a target temperature drop across the coil, a target airflow in CFM per ton, and a target superheat and subcooling range for the refrigerant charge. Performance optimization means measuring your system against those numbers and correcting whatever's off, rather than assuming the system is fine because it's blowing cold air.
Georgetown's summer humidity means performance optimization isn't only about temperature, it's about the system running long enough to actually dehumidify the air. A system hitting temperature setpoint quickly but leaving the house feeling clammy is often an airflow or charge issue we can correct with the same measurements used for temperature performance.
Signs Your System Is Underperforming Its Spec
- The temperature split between return air and supply air is noticeably less than 18-20ยฐF
- The system cools the house eventually, but takes much longer than it used to
- You've had the same system for years and it's never been measured against factory specs, only 'checked' visually
- A recent repair fixed the immediate problem but the system still doesn't feel as strong as before
- You're comparing performance to a newer system in the same house and this one falls noticeably short
How Performance Optimization Works
We measure supply and return temperatures to calculate the actual temperature split, then compare airflow at the registers against the CFM per ton your system's tonnage requires. Most underperformance traces back to one of two things: airflow that doesn't match the equipment's design, or refrigerant charge that's drifted from spec, often from a small leak that hasn't yet caused an obvious failure.
Once we've identified the gap, we correct blower speed, refrigerant charge, or both, then re-measure to confirm the system is actually hitting its numbers, not just running quieter. We give you the before-and-after readings so the improvement isn't just a guess.
We also inspect the blower wheel for dirt buildup, since a soiled blower wheel reduces airflow the same way a clogged filter does, and it's a component many basic tune-ups skip entirely because it requires removing an access panel to inspect properly.
A well-tuned system should also recover quickly after a thermostat setback, if it takes far longer than expected to bring the house back down after being raised during the day, that lag is worth mentioning when you schedule service.
Frequently Asked Questions, Getting Your AC to Actually Hit Its Rated Performance
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