Lennox 21D20 – Lennox ALOAMB508-1 Low Ambient Control Kit for PR, PRP, LRP & Q-Series Packaged Units

 

Product Description

The Lennox 21D20 Low Ambient Control Kit (part number ALOAMB508-1) is a genuine OEM accessory designed to maintain reliable cooling operation in low outdoor temperature conditions. This kit allows compatible Lennox packaged rooftop units to operate efficiently during colder weather by properly regulating condenser fan performance and system pressures.

Engineered specifically for Lennox PR, PRP, LRP, and Q-Series packaged units, the 21D20 low ambient control kit helps prevent issues such as short cycling, improper head pressure, and reduced cooling efficiency when ambient temperatures drop. It is commonly used in applications requiring year-round cooling, including data rooms, server spaces, commercial offices, and light industrial environments.

Manufactured to Lennox factory specifications, this control kit ensures proper fit, dependable performance, and long-term reliability when installed according to OEM guidelines. Using a genuine Lennox low ambient kit helps protect system components and maintain stable cooling performance outside of standard operating conditions.

 

Key Features and Benefits

• Genuine Lennox OEM low ambient control kit
• Enables cooling operation at reduced outdoor temperatures

• Helps maintain proper condenser head pressure
• Improves system stability and efficiency in cold weather
• Designed for seamless integration with compatible Lennox units
• Ideal for year-round cooling applications

 

Compatibility

• Lennox PR Series packaged units
• Lennox PRP Series packaged units
• Lennox LRP Series packaged units
• Lennox Q-Series packaged units

 

Part Information

• Lennox Part Number: 21D20
• Manufacturer Part Number: ALOAMB508-1
• Product Type: Low Ambient Control Kit

 

This Lennox 21D20 Low Ambient Control Kit is an essential OEM solution for extending the operational range of compatible Lennox packaged systems, ensuring dependable cooling performance even in low ambient temperature conditions.