As the arctic chill recedes, spring is a time when everyone collectively gives their HVAC system a momentary rest. However, when the first sizzle of summer snaps its steamy towel in our direction, businesses are too often stuck with the sting of a failing air conditioning unit. According to many HVAC contractors, more than 50 percent of all air conditioner failures result from improper cleaning (or failure to clean at all).

The following HVAC maintenance checkpoints are necessary to check in the spring so that air conditioning systems are a go once the weather warms up:

• Check the condenser unit.


After fall and winter, the condenser unit’s coils can become clogged with fallen leaves and other plant debris. Damage to the coils may also occur during intense winter storms, where snow and ice put pressure on them. Be sure to remove debris from the coils, straighten any bent coils, and clean them with soapy water.

• Inspect the wiring.


Unfortunately, mice and other rodents seek shelter in a/c unit wiring over the winter. That’s why it is essential to check the wiring for signs of a nest, which may mean there is damage such as burnt wires, loose connections, or electrical shorts.

• Survey refrigerant levels.


When refrigerant levels are low, this may indicate the system has a leak. Before adding more refrigerant, it’s important to repair the unit before adding more refrigerant.

• Clean drain lines, the blower fan, and evaporator coils.


During the bad weather months, blockages of mold, mineral deposits, dust, and dirt may clog drain lines, blower fans, and evaporator coils. Remove any debris you find and clean for proper drainage and airflow.

• Replace filters.

The quality of the filter dictates how often it needs to be changed. For example, fiberglass or charcoal filters last only one month, while pleated filters need to be changed once every three months.

A correctly functioning HVAC system works to reduce energy consumption and keep a business’s utility bills from spiking due to seasonal temperature changes. Preventative maintenance is a significant factor for companies looking to balance out energy costs.


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