LiftMaster HTR120NC Coverless Heater Kit for All MAXUM Operators

The HTR120NC Coverless Heater Kit is a self-regulating heat solution designed for MAXUM DC commercial door operators operating in extreme cold environments. This coverless configuration installs directly within compatible operators, eliminating the need for a separate enclosure while maintaining consistent internal temperatures for reliable performance in sub-zero conditions.

Engineered for professional installers, the HTR120NC operates independently of operator firmware and control wiring. A standard 120VAC plug provides straightforward power connection, making this kit an efficient retrofit or field-installed solution for cold-climate applications.

Specifications

• Compatible with all MAXUM DC Commercial Door Operators, including TDC/Trolley models
• Coverless design—no additional enclosure required
• Supports operation in ambient temperatures down to -31°F
• Self-regulating heater element requires no firmware updates
• No wired connection to the MAXUM operator required
• Includes 120VAC plug; requires dedicated 120VAC power outlet
• For dry locations only; not rated for damp or wet environments