The Lennox 21W04 (part number 101019-01) is a high-performance two-stage gas valve engineered for precise gas flow control in residential and light commercial HVAC systems. Designed to support enhanced efficiency and comfort, this valve modulates between low and high gas flow rates, aligning with system demand to optimize burner performance.Key features include a robust construction for long-term reliability, compatibility with natural gas systems, and seamless integration into Lennox two-stage furnaces and heating units. The dual-stage functionality allows for quieter operation, improved temperature consistency, and better energy utilization, especially during part-load conditions.Specifications:

• Manufacturer Number: 101019-01
• Type: Gas Valve
• Staging: Two-Stage Operation (Low/High)
• Application: Natural Gas Systems
• Function: Regulates gas flow for furnace combustion
• Compatibility: Selected Lennox HVAC units

This OEM component ensures consistent performance and safety, meeting Lennox’s strict engineering standards. Ideal for replacements or system upgrades, the 21W04 gas valve supports efficient heating system operation and long-lasting reliability.Why Buy from Beenimax.com?
Beenimax.com provides only genuine Lennox replacement parts backed by dependable customer service and fast shipping. Trusted by HVAC professionals and contractors nationwide.