Daniel D Lewisport , KY December 12, 2015 Appliance: Whirlpool Electric Dryer WED6400SW0 Whirlpool Dryer Wed6400sw0: Dryer didn't heat up. How to replace Radiant Surface Element (Dual). Tested dryer parts, got a ol when tested heat element. Matched model number with parts on your site. Replaced element, dryer working like new. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes