OEM Goodman 23 x 20 Vertical Drain Pan for ASPF313716DA — B1756020L

The Goodman B1756020L Vertical Drain Pan measures 23 x 20 inches OD and is the genuine OEM condensate pan for the ASPF313716DA air handler installed in the vertical (upflow/downflow) position. The pan collects condensate from the evaporator coil and channels it to the drain connection, protecting the cabinet, ductwork, and surrounding structure from water damage and mold. Replace a cracked, rusted, or warped pan before it overflows.

Specifications

• OEM Part Number: B1756020L
• Outside Dimensions: 23 in x 20 in
• Orientation: Vertical (upflow / downflow)
• Brand: Goodman (genuine OEM)
• Equipment Type: Air Handler
• Primary Fit: ASPF313716DA

OEM vs. Generic

Drain pans are fit-critical: the OEM pan matches the coil footprint, drain-port location, and slope exactly, so condensate flows to the outlet instead of pooling. Generic or universal pans often sit at the wrong angle or misalign the drain, leading to standing water and nuisance float-switch trips. OEM is the right call for leak-free drainage.

Installation Difficulty

Moderate (3/5). Power down, pump out residual water, and remove the coil to access the pan. Swap the pan, reseat the coil, reconnect the drain line, and verify proper slope and flow. Allow 45–60 minutes.