Over time, dust, dirt, and debris accumulate on your HVAC system's coils, reducing airflow, increasing energy consumption, and even leading to costly repairs. Regular cleaning helps maintain peak performance, lowers utility bills, and extends the lifespan of your furnace. In this guide, I will walk you through how to clean furnace coils safely and effectively. Quick-Start Guide: How to Clean Furnace Coils in 5 Steps Turn Off Power & Gas – Shut off electricity at the breaker and gas supply valve (if applicable) Remove Surface Debris – Use a soft brush and vacuum to clear loose dirt from coils Apply Coil Cleaner – Spray commercial foam cleaner or vinegar solution (1:1 mix) evenly Gently Scrub & Rinse – Brush along fin direction, then mist with water if required Dry & Restore Power – Let coils air dry completely before restarting the system Table of Contents Signs Your Furnace Coils Need Cleaning Essential Safety Precautions Before Cleaning Essential ...