Yes — meaningfully. An air conditioner fighting a dirty coil, a loaded filter, or a low refrigerant charge runs longer for the same result, and run time is exactly what shows up on your PNM bill. Maintenance restores the efficiency the system was built with.

Where the Efficiency Goes

  • Dirty condenser coil. Fine grit forms an insulating film on the outdoor coil fins, so the system cannot reject heat properly. The compressor runs hotter, longer, and draws more current for less cooling.
  • Restricted airflow. A clogged filter or dust-caked blower wheel means less air across the evaporator coil, longer run times, and eventually a frozen coil.
  • Low refrigerant charge. Even a modest undercharge cuts capacity noticeably. Since air conditioners do not consume refrigerant, low charge always means a leak worth finding.
  • Loose electrical connections. Resistance at a loose lug generates heat and wastes power.
  • Miscalibrated thermostat. A few degrees of drift means the system runs when it should not.

What a Tune-Up Actually Does About It

Coils cleaned, filter replaced, refrigerant charge verified against superheat and subcooling, electrical connections tightened, amp draw measured on both motors, condensate drain flushed, and the temperature split across the coil confirmed. Each item is small; together they are the difference between a system operating at its rating and one operating well below it.

Why the Savings Are Larger in Albuquerque

Efficiency losses only cost money while the system runs — and here it runs for five months, hard, through afternoons above 95. The same percentage loss costs a New Mexico homeowner considerably more than it would in a mild climate. Dust also degrades coils faster here than the national maintenance advice assumes.

Efficiency Beyond the Equipment

Sealing duct leaks into an unconditioned attic, adding attic insulation, and installing a programmable or smart thermostat all reduce run time further. Those often deliver more savings per dollar than upgrading the equipment itself.

Book a spring AC tune-up, or bundle it with fall heating service through the Care Club. Contact B. Carlson in Albuquerque and Santa Fe.