Drain Spud for Model 550/560 Humidifiers

Specifications for Aprilaire 4223 Replacement Drain Spud

The Aprilaire 4223 Replacement Drain Spud is a genuine OEM component designed for use with Aprilaire Model 600 Humidifiers. This replacement part ensures proper drainage and reliable performance of the humidifier system by securely connecting to the unit’s drain line. Constructed from durable, high-quality materials, the 4223 drain spud provides a watertight seal to prevent leaks and maintain efficient water flow. It is easy to install and built to withstand long-term use in demanding residential HVAC environments.

• Model: 4223
• Brand: Aprilaire
• Product Type: Replacement Drain Spud
• Compatibility: For use with Aprilaire Model 600 Humidifiers
• Material: High-strength, corrosion-resistant plastic
• Color: White or light gray (model-dependent)
• Connection Type: Threaded or slip-fit design (depending on unit configuration)
• Function: Provides secure drainage connection between humidifier and drain tubing
• Application: Designed for use in whole-home humidification systems
• Performance: Ensures leak-free water discharge for optimal humidifier operation
• Installation: Simple installation; replaces existing drain spud without modification
• Maintenance: Maintenance-free once installed; check during annual humidifier servicing
• Durability: Resistant to corrosion, scale buildup, and water temperature fluctuations
• Use: Ideal for both residential and light commercial Aprilaire humidifier systems
• Design Features:
  • OEM component ensures precise fit and compatibility
  • Watertight design prevents leaks and ensures consistent drainage
  • Engineered to withstand long-term HVAC system operation
• Compliance: Meets Aprilaire manufacturing and performance standards
• Safety: Helps prevent water leaks and potential system damage
• Warranty: Backed by Aprilaire Limited Product Warranty
• Manufacturer: Aprilaire / Research Products Corporation
• Country of Origin: Made in the USA