Purchase an Amana replacement drip pan. Contact the company by phone at 877-254-4729 or visit the company's website.
Turn the Amana air unit off on the control panel and by switching off the dedicated breaker on your home's main electrical panel. This added safety feature is to prevent someone from powering the unit on as you replace the drip pan.
Unfasten the coil hatch cover using a wrench and/or pliers. Pull the coil hatch cover off the unit and set aside.
Look under the coils to find the old drip pan. Do not pull the drip pan directly out; instead, loosen and then disconnect the drain line with pliers and/or wrench. Allow the line to drain before proceeding.
Attempt to pull the old Amana drip pan out from below the coils. If there is resistance, it may be fastened to the Amana unit. Locate any retaining screws or bolts and remove them with a wrench or screwdriver.
Slide the new Amana drip pan into place. Fasten it to the unit, if applicable. Put the coil hatch cover back onto the air conditioning unit and switch the appliance's dedicated breaker back on, then turn the unit on at the control panel.