Supco NPC114H Negative Pressure Trap

Description

The Supco NPC114H Negative Pressure Trap is a purpose-built condensate management component designed to maintain proper drainage integrity in high-efficiency HVAC systems. By creating a reliable water seal within the condensate drain line, this trap prevents negative pressure conditions from drawing unconditioned air, flue gases, or contaminants back through the drain — a critical requirement in modern condensing furnaces, air handlers, and fan coil units that operate under negative pressure.

Why a Negative Pressure Trap Matters

High-efficiency HVAC equipment generates condensate as a byproduct of heat exchange. Because these systems often operate with negative pressure in the drain pan or heat exchanger area, a standard P-trap may not provide adequate protection. The Supco NPC114H is specifically engineered to handle these negative pressure environments, ensuring that condensate drains freely while blocking reverse airflow that could compromise system efficiency, indoor air quality, or equipment performance.

Key Features

• Designed for negative pressure HVAC condensate drain applications
• Prevents backflow of air and gases through condensate drain lines
• Compatible with high-efficiency condensing furnaces, air handlers, and fan coil units
• Durable construction for long-lasting, low-maintenance performance
• Compact design for easy installation in tight spaces
• Supco quality — a trusted name in HVAC replacement components

Typical Applications

• High-efficiency condensing gas furnaces
• Air handlers and fan coil units operating under negative pressure
• Condensate drain line protection in residential and light commercial HVAC systems

Why Choose Supco

Supco has been a leading manufacturer of HVAC/R replacement parts and components for decades. Their products are trusted by technicians and contractors nationwide for reliability, compatibility, and ease of installation. The NPC114H continues that tradition, delivering a dependable solution for one of the most overlooked — yet critical — aspects of system drainage.