Whirlpool WPW10311757 Refrigerator Rail Mullion
Product Description
The Whirlpool WPW10311757 Refrigerator Rail Mullion, frequently referred to as a mullion heater, is an indispensable component in some Whirlpool refrigerators, particularly French door models. It's a small strip that normally runs along the vertical seam where two French doors meet. This rail mullion contains a heating element that prevents condensation from collecting on the door gaskets. Condensation buildup can cause mold development, foul odors, and even damage to gaskets.The mullion heater generates low-level heat, which maintains the door seal area slightly warmer than the surrounding air. This warmth prevents moisture from collecting on the gaskets, resulting in an adequate seal and maximum refrigerator operation. A functional mullion heater helps to keep continuous cold air within the refrigerator.
