While designed for Sterling equipment

Simplified Maintenance: Standardized bolt patterns allow for faster swaps during motor bearing service calls

drop-in replacement that prioritizes system safety and long-term performance in commercial environments

For contractors maintaining Bard HVAC systems

Weil McLain 383-500-620 Maintenance Kit Els PW 17895 While designed for Sterling equipmentProfessional heating contractors understand that scheduled service is the only way to maintain the combustion efficiency and operational integrity of high efficiency condensing units. The Weil McLain 383 500 620 Maintenance Kit is a critical OEM boiler part designed specifically for Ultra Gas Boilers, providing all the necessary components for a comprehensive annual teardown and inspection. This kit is compatible with Ultra 155, 230, 299, and 399