Fall AC Maintenance Prevents Costly Summer Failures

Homeowners often neglect their air conditioning systems once cooler weather arrives, a practice that HVAC experts warn can lead to significant mechanical failures and costly repairs when the unit is reactivated. Jon Graham, CEO of Element Plumbing, Heating & Air in St. George, UT, emphasizes that fall is an opportune time to inspect cooling equipment and assess its condition. Extended periods of heavy use throughout the summer months can place a substantial strain on air conditioning units. A common issue identified by Graham is a severely clogged air filter, which impedes airflow. When airflow is restricted, the system must exert more effort to achieve desired temperatures, a task it managed with less difficulty in earlier, warmer months. Graham has encountered filters in September that were so clogged they resembled "sheets of felt," indicating the system was "smothered." Furthermore, the outdoor condensing unit can accumulate substantial debris, including pollen, dust, grass clippings, and general yard waste. This accumulation forces the compressor to operate at temperatures exceeding its design parameters, potentially leading to premature wear and failure. Identifying potential AC problems before they become critical is crucial. A primary indicator of an issue is the air blowing into the home feeling warmer than it did previously, even without any changes to the thermostat settings. This symptom could suggest problems with the refrigerant or the compressor. Another telltale sign is the formation of ice on the AC coil or refrigerant lines, which points to potential airflow or refrigerant leaks. Graham notes that some homeowners have mistakenly perceived ice formation as a sign of the system working harder or more effectively, continuing to run units for extended periods even when ice is present. This continued operation under such conditions can exacerbate underlying problems. Proactive maintenance in the fall, including cleaning or replacing air filters, clearing debris from the outdoor unit, and scheduling professional inspections, can mitigate these risks. Addressing minor issues during the off-season can prevent major breakdowns and expensive emergency repairs when the demand for cooling returns in the summer. Regular checks ensure that the system is operating efficiently and can maintain optimal performance throughout its lifespan, saving homeowners from unexpected expenses and discomfort.