A standard cleaning typically involves a surface wash or vacuuming of the outdoor condenser coil and sometimes spraying the indoor coil in place. A coil pull and clean is an intensive, deep-cleaning process where the indoor evaporator coil is physically removed from the air handling unit. This allows our technicians to thoroughly clean all sides and the entire depth of the coil, removing buildup that is impossible to reach otherwise.
The evaporator coil cools the air and constantly collects dirt, dust, mold spores, and biological contaminants that pass through your ductwork. Over time, this buildup creates a dense insulating layer known as “coil fouling.” Pulling and deep cleaning the coil is the only way to effectively remove this fouling, which is crucial for optimal efficiency and air quality.
A dirty coil acts like a blanket, severely restricting the heat transfer process that is essential for cooling. When the coil is clean, the refrigerant can absorb heat from your home’s air quickly. A dirty coil forces the system to run longer cycles to achieve the set temperature, leading to a significant increase in energy consumption and higher utility bills—sometimes 10% to 30% higher.
While regular maintenance is annual, we generally recommend a comprehensive coil pull and clean every 3 to 5 years, depending on your home’s conditions, such as the presence of pets, smoking, or living near construction. If you suffer from allergies or notice a drop in performance, it may be needed sooner.
Key signs include: Reduced airflow from vents, unpleasant or musty odors coming from the vents (a sign of microbial growth), the system running constantly without reaching the set temperature, or a noticeable spike in your electric bill.
Absolutely. The evaporator coil is a common breeding ground for mold, mildew, and bacteria. By physically removing and deep-cleaning the coil, we eliminate these contaminants, which can circulate throughout your home. This process is a critical step in improving indoor air quality and creating a healthier living environment.
Yes, it can. A dirty coil makes the entire system overwork, leading to excessive strain on components like the compressor—the most expensive part to replace. By restoring the coil’s ability to transfer heat, a deep clean significantly reduces wear and tear, extends the lifespan of your unit, and minimizes the risk of costly failures.
Yes. After the deep clean, we apply an EPA-approved antimicrobial treatment to the clean coil surface. This treatment inhibits the future growth of mold, mildew, and bacteria, helping the coil stay cleaner for a longer period of time and protecting your indoor air quality.
Cleaning the evaporator coil requires specialized tools, professional-grade cleaning solutions, and, most importantly, the expertise to safely dismantle and reassemble the air handler without damaging sensitive components like fins, drainage systems, or electrical connections. An improper cleaning can lead to permanent damage or cause leaks.
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