Description
Supco SH503 Drain Heater Overview
The Supco SH503 is a purpose-built drain heater designed to prevent freeze-ups and ice blockages in condensate drain lines and drain pans on refrigeration and HVAC equipment. Operating at 240 volts and consuming just 15 watts, this energy-efficient heater delivers targeted warmth exactly where it’s needed — keeping drains clear and systems running without interruption.
Key Features
- Operating Voltage: 240V
- Wattage: 15W — low-energy, continuous-duty operation
- Lead Length: 18 inches for flexible installation reach
- Designed to prevent freeze-up in condensate drain lines and drain pans
- Compact, durable construction for long service life
- Easy drop-in or wrap installation — no special tools required
- Manufactured by Supco, a trusted name in HVAC/R replacement components
Application
The SH503 is ideal for use in walk-in coolers, refrigerated display cases, heat pumps, and any HVAC or refrigeration system where condensate drain lines are exposed to freezing temperatures. The 18″ leads provide ample length for routing to a nearby power source, making installation straightforward in tight equipment cabinets and drain pan locations.
Why Choose the Supco SH503?
Frozen drain lines are a leading cause of water damage, equipment downtime, and costly service calls. The SH503 provides a simple, low-cost preventive solution — keeping drain passages open during cold-weather operation and reducing the risk of overflow or ice damage to surrounding components. Its 15W draw means minimal impact on operating costs while delivering consistent freeze protection.
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