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Centralized cooling systems remove heat from the house to cool it. Major components include the condenser and the evaporator. (click to enlarge)
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Ah, central air conditioning. In many parts of the United States it's practically a necessity. What did people ever do before it? And what can they do if it quits working on a hot day? Let's see.
A central air conditioner is a large appliance system that cools an entire residence. It has two separate components: the condenser and the evaporator. The condenser unit typically is located outside the house. The evaporator coil is mounted with or near the heating furnace, so the furnace blower can circulate the cool air throughout the house. Coolant lines run from the condenser to the evaporator, taking heat from the house and moving it outside.
Replace a filter:
- Locate the filter(s) in the unit. Some are located on the condenser while others at the evaporator.
- Remove the housing as needed to access and remove the filter.
- Take the filter to a hardware store or home center for an exact replacement. If you need it, a part number may be on the filter or in the owner's manual. If a part number is not available, write the central air conditioner's model number down and take it with you for cross-referencing.
- Reinstall the filter, making sure that the area around the filter also is clean of debris.
Clear the evaporator drain:
- Remove the trap from the elbow.
- Flush the trap with a garden hose, then pour in 1 tbsp. chlorine bleach through the trap to clean it.
- Reattach the trap to the elbow.
Tighten loose fan blades:
- Visually inspect the setscrews on the fan's hub for obvious damage or a loose screw.
- If they are loose, tighten the setscrews with a wrench or screwdriver.
- Check the fan's rotation to make sure it is smooth.
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