OEM Goodman Vertical Drain Pan 23 x 20 in for WAHMS3642P4ABA — B1756020L

Goodman B1756020L Vertical Drain Pan

The Goodman B1756020L is a genuine OEM vertical condensate drain pan engineered to fit WAHMS3642P4ABA air handler systems. Mounted beneath the evaporator coil, this pan captures and channels condensate away from the equipment to prevent water damage, overflow, and microbial growth inside the cabinet. Because it is an exact factory replacement, it seats cleanly against the coil and drain fittings with no modification required.

Specifications

• Overall dimensions: 23 x 20 in OD
• Orientation: Vertical air handler configuration
• Material: Corrosion-resistant molded composite
• Fits: Goodman WAHMS3642P4ABA air handlers
• OEM part number: B1756020L

OEM vs. Generic

This genuine Goodman drain pan is dimensionally matched to the factory coil footprint and drain port locations, ensuring a leak-free seal. Aftermarket universal pans often require trimming or extra sealant and can shift under coil weight. The OEM pan installs as designed and protects your warranty coverage.

Installation Difficulty

Moderate. Requires removing the coil access panel and lifting the coil to swap the pan. Most experienced techs complete the job in 30–45 minutes. Power off the unit and disconnect the condensate line before service.