Description
The Lochinvar & A.O. Smith 100277718 is a genuine OEM condensate trap engineered specifically for use with Lochinvar and A.O. Smith high-efficiency condensing boilers and water heaters. Condensate traps play a critical role in the proper operation of condensing appliances — they safely collect and discharge the acidic condensate produced during the combustion process, preventing it from backing up into the heat exchanger or flue system and causing premature corrosion or equipment damage.
Why Condensate Management Matters
High-efficiency condensing boilers and water heaters extract maximum heat from combustion gases, causing water vapor in the flue to condense. This condensate is mildly acidic and must be properly routed away from the appliance. A properly functioning condensate trap ensures a sealed, reliable drain path while maintaining the correct pressure differential within the flue system — keeping your equipment running safely and efficiently.
Key Features & Benefits
- Genuine OEM replacement part — designed and tested to Lochinvar & A.O. Smith specifications
- Ensures proper condensate drainage from high-efficiency condensing appliances
- Helps prevent acidic condensate backup that can damage heat exchangers and flue components
- Maintains correct flue pressure differential for safe, efficient operation
- Direct drop-in replacement for simplified installation and reduced downtime
- Built for long-term durability in demanding condensing environments
Application
This condensate trap is intended for use with compatible Lochinvar and A.O. Smith condensing boilers and water heaters. Always verify compatibility with your specific model before installation. Consult the equipment service manual or contact a qualified HVAC/R technician for proper installation guidance.
Part Information
- Brand: Lochinvar & A.O. Smith
- Part Number: 100277718
- Part Type: Condensate Trap
- Application: High-efficiency condensing boilers and water heaters







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