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Living in the Greater Los Angeles Area means experiencing beautiful weather, but it also means bracing ourselves for the annual wildfire season. When smoke and ash blanket the region, turning the sky orange, staying indoors isn’t just about avoiding heat—it’s about protecting your lung health. Your home’s air conditioning system is your primary line of defense against hazardous outdoor pollutants, provided it is properly prepared.
If your HVAC system is neglected, it will pull in smoky odors and recirculate fine particulate matter throughout your rooms. Prepping your system ahead of time creates a secure, clean sanctuary inside your home when the outdoor air quality drops.
5 Critical Steps to Prepare Your Air Conditioner
Taking proactive steps before the smoke arrives makes a massive difference in your indoor air quality. Here are the five most effective ways to prepare your cooling system to withstand wildfire season and keep your family breathing safely.
1. Upgrade to a MERV 13 Air Filter
Most standard homes use basic fiberglass filters designed only to trap large dust bunnies, not microscopic smoke particles. Wildfire smoke contains hazardous PM2.5 particles that can easily bypass standard filtration. Upgrading to a pleated filter with a MERV 13 rating is the residential gold standard, as it can capture up to 90% of fine smoke particles before they enter your living space.
2. Switch Your Thermostat to Recirculate
During a severe smoke event, your primary goal is to stop outside air from leaking inside. Look at your thermostat settings and switch the system fan from "Auto" to "On" or "Recirculate." Running the fan continuously ensures that your indoor air is constantly cycled through your clean filter, scrubbing away airborne irritants even when the system isn't actively cooling.
3. Adjust Specialized Ventilation Systems
If your property relies on advanced indoor air quality technology, such as an Energy Recovery Ventilator (ERV), you need to adjust its settings during a fire alert. Switch the ventilator to recirculation mode or turn it off entirely. Leaving it on standard settings will intentionally pull smoky, polluted outdoor air straight into your home.
4. Clear Ash from the Outdoor Condenser
Fine ash and airborne debris from nearby blazes settle quickly on your outdoor condenser unit, clogging the delicate metal fins. When these fins are coated in grime, the unit cannot release heat effectively. This forces your system to work twice as hard, leading to soaring energy bills and potential system breakdowns during peak summer heatwaves.
5. Schedule a Professional Pre-Season Inspection
The ultimate way to ensure your system is ready is to have an expert inspect it. A professional technician can verify whether your system can handle high-efficiency filters without reducing airflow, check the seals on your ductwork to prevent smoke leaks, and perform deep cleaning that keeps your equipment running smoothly in the worst conditions.
Secure Your Indoor Comfort Today
At Air Comfort Experts, we bring over 30 years of local and international experience to safeguard your family’s comfort and respiratory health. From installing advanced whole-home air filtration systems to performing precision tune-ups, our licensed technicians are ready to future-proof your home. Call us today at (626) 323-9820 to schedule your wildfire readiness inspection and breathe easier this season.