OEM Goodman 23x20 Vertical Drain Pan for ARPF374316AA — B1756020L

The Goodman B1756020L Vertical Drain Pan is a genuine OEM condensate pan engineered as a direct replacement for the ARPF374316AA air handler and compatible Goodman/Amana coil cabinets. Mounted beneath the evaporator coil in vertical (upflow) configurations, it captures condensate runoff and channels it to the drain line, protecting your equipment, ductwork, and surrounding structure from water damage and mold.

Over years of service, factory drain pans crack, corrode, or develop clogs that lead to overflow and ceiling stains. Replacing the pan with the correct OEM part restores proper drainage and seals the coil section as the manufacturer intended.

Specifications

• OEM Part Number: B1756020L
• Orientation: Vertical / upflow
• Nominal Dimensions: 23 x 20 in. (OD)
• Application: Evaporator coil condensate capture
• Compatibility: Goodman ARPF374316AA air handler

OEM vs. Generic

This is the genuine OEM pan — it matches the exact footprint, drain port location, and coil clearance of your unit, so it drops in without modification. Aftermarket universal pans are typically cheaper but often require trimming, re-drilling drain ports, or sealant work to fit, and may not align with the factory drain connection.

Installation

Difficulty: Moderate. Requires removing the coil access panel and lifting the coil to swap the pan. Most experienced DIYers can complete it in under an hour; if you're uncomfortable handling the evaporator coil or refrigerant lines, have a licensed HVAC technician perform the replacement.