OEM Goodman Vertical Drain Pan 23x20 for WAHME3137P4AAA — B1756020L

The Goodman B1756020L Vertical Drain Pan is a genuine OEM 23" x 20" OD condensate pan for the WAHME3137P4AAA air handler and compatible Goodman/Amana vertical applications. Molded from durable, corrosion-proof plastic, it captures condensate from the evaporator coil and channels it to the drain line without the rust-through and leaks that plague older metal pans. A cracked or clogged pan leads to overflow, water damage, and float-switch lockouts — a fresh OEM pan restores reliable drainage.

• Part Number: B1756020L
• Type: Vertical condensate drain pan
• Size: 23 x 20 in. outside dimension
• Material: Molded plastic, corrosion resistant
• Orientation: Vertical (upflow/downflow) coil applications
• Fit: Goodman WAHME3137P4AAA and compatible air handlers
• Condition: New, OEM

OEM vs. Generic

The OEM B1756020L is molded to the exact footprint and drain-port location the cabinet and coil require, so it sits flat and drains the way the unit was engineered to. Generic pans often differ in dimension or port placement, causing pooling or fit problems. For a part that protects the home from water damage, the correct OEM pan is the responsible choice.

Install Difficulty

Moderate (3/5). Disconnect power and shut off water/condensate lines. The evaporator coil typically must be lifted to slide the old pan out and the new one in; reconnect the drain line and any float switch, then test for proper drainage. Allow 45–75 minutes; coil handling experience helpful.