Wet sprinkler systems installed in garages, loading docks, and other unheated or semi-exposed spaces face a serious winter risk: freezing. When temperatures drop below 32°F (0°C), water-filled pipes can freeze, expand, and rupture leading to immediate system damage, costly repairs, and potential life-safety failures when protection is needed most.
Because these systems are always charged with water, even brief exposure to freezing conditions can create significant problems. That’s why the National Fire Protection Association (NFPA) requires water-filled sprinkler piping to be maintained at a minimum temperature of 40°F (4°C).
One of the most reliable and cost-effective ways to meet this requirement is electric heat tracing. Commonly used in commercial and industrial applications, heat tracing systems provide consistent, controlled heat along sprinkler piping to prevent freezing without the inefficiencies of space heating entire areas.
Drexan Energy Systems supports sprinkler freeze protection with proven HeatTracer® MultiTrace™ self-regulating heating cables. These cables automatically adjust their heat output based on ambient conditions, delivering freeze protection exactly where it’s needed. They’re suitable for both metallic and non-metallic piping and can be used across multiple applications, including fire sprinkler systems, pipe freeze protection, and roof and gutter de-icing.
To help engineers, contractors, and facility teams make informed decisions, Drexan provides a free Fire Sprinkler Freeze Protection Design & Installation Guide. The guide walks through:
- How to determine the right heat tracing approach for sprinkler piping
- Key design considerations for freeze protection
- Step-by-step installation guidance
- Best practices for components, controls, and accessories.
Additional instructions are included with Drexan connection kits, controllers, and accessories to ensure systems are installed correctly and perform reliably over time.
If you’re responsible for maintaining sprinkler system integrity through winter conditions or designing systems that must perform year-round, learning more about dedicated freeze protection is essential.
Protect your wet sprinkler system with confidence using Drexan’s trace heating cables and connection systems.
Trace Heating Redefined.