Things You'll Need:
- Wire brush
- Vinegar-and-water solution
- New pads
- Tape measure
- Flat-nosed screwdriver
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Step 1
Turn off power to the unit. It is recommended that you start out with fresh pads at the beginning of each cooling season. Remove the old pads by disconnecting the wire bars or mesh holding them in place.
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Step 2
Inspect the unit for scale build-up. Use a wire brush and the vinegar-and-water solution to clean the vents and drain pan. Check the drain pain for leaks and remove any leaves or debris that may be clogging it.
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Step 3
Measure the pads using a tape measure. Consider purchasing the older Aspen pads rather than the newer blue ones; although they are a bit messier, they absorb water better and are less expensive.
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Step 4
Purchase new pads and install them into the frame using a flat-nosed screwdriver for tighter fits if you are having difficulty getting them into the frame. Replace the pad and frame into the unit, locking them securely into place.
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Step 5
Test to ensure the pads will be properly saturated by turning on the cooler pump and motor to see if there is an even distribution of the water. Regularly turning the pump on for five minutes before you turn on the fan will help the cooler to run more efficiently by fully saturating the pads before air distribution. Check the water level in the pan to be sure that it is just below the pan line; if not, adjust the float arm until it fills properly.
