OEM Goodman Horizontal Drain Pan for WAHMS3642P4ACA — B1756028L

Goodman B1756028L Horizontal Drain Pan

The Goodman B1756028L is a genuine OEM horizontal condensate drain pan built for the WAHMS3642P4ACA air handler when installed in a horizontal (attic or crawlspace) configuration. In horizontal applications the pan runs the full length beneath the coil to capture condensate across the slab, so a correctly fitted pan is critical to prevent overflow into the ductwork or onto a finished ceiling below.

Specifications

• Orientation: Horizontal
• Function: Full-length condensate collection pan
• Fits: WAHMS3642P4ACA and compatible air handlers
• OEM Part Number: B1756028L
• Equipment: Goodman Air Handler

OEM vs. Generic

This genuine OEM horizontal pan matches the coil slab length, drain port placement, and required slope so condensate flows out instead of pooling. Generic substitutes frequently sit flat or misalign the outlet, causing standing water, microbial growth, and overflow. For horizontal installs especially, OEM fit is the safe choice.

Installation Difficulty

Moderate — requires sliding the coil to access the pan, transferring the old pan, and reconnecting the primary (and secondary, if used) drain lines with correct slope. Plan 60 minutes. Always pour-test for drainage before sealing the cabinet.