Condenser coils are the most delicate components on air-cooled HVAC systems and one of the components most exposed to the elements. Severe
weather, pollen, dust, dirt and debris can negatively impact your HVAC system and result in higher energy consumption and lower heating
or cooling efficiency for your building.
Severe Weather Coil-Maintenance Tips
Inspect condenser coils immediately following any severe weather to ensure the soft-metal fins protecting the coils have not been damaged by heavy rain, hail or debris.
Comb damaged condenser-coil fins to straighten them and reclaim their ability to protect the condenser coils.
Replace seriously damaged condenser-coil fins. This is far less costly than replacing a damaged or overworked compressor.
Remove any wind-blown debris that has adhered to the condenser coils and may be reducing airflow through the coils.
Install hail guards to help prevent damage to the condenser-coil fins.
Proper maintenance of both the evaporator coils and condenser coils are key to energy savings, operating efficiency and equipment costs.
In addition to inspecting and servicing your evaporator and condenser coils following severe weather, routine maintenance is important,
Routine Coil-Maintenance Tips
Inspect evaporator and condenser coils annually for dust, dirt and debris.
Inspect condenser coils more often, following severe weather including high winds.
Clean all coils annually or as necessary. Especially ensure coils are clean before having any other repair or service work performed
to prevent substandard or unnecessary repairs.
Newer HVAC systems may require more frequent maintenance. Higher SEER-rated systems often have variable-speed fan motors that adjust speed
based on demand. When they are forced to work harder due to damaged or dirty condenser-coil fins or condenser coils, they use more
energy to operate and provide less efficient heating or cooling.
Why Proper Coil Maintenance Is So Important to Your HVAC System
Damaged condenser-coil fins and condenser coils may result in airflow reduction, inhibiting the HVAC system’s ability to transfer heat
between the building and the outdoor air. This causes compressors to run longer and work harder, using up to 30% more energy, according
to the Department of Energy (DOE).
For most HVAC equipment, the manufacturer’s warranty may be voided if a component’s failure is traced to an improperly maintained or
damaged condenser coil.
Dirty evaporator coils may also decrease airflow, reducing heat transfer and degrading dehumidification. This can cause building air-quality
Keeping up to date with both routine and severe weather coil maintenance is an important step toward achieving a green building that provides
occupant comfort, energy efficiency and energy savings.