Where design & comfort meet

The out-of-sight, out-of-mind UL listed in-floor perimeter trench heater.

Maximize building comfort & amplify aesthetics

THX drops into the floor, directly addressing the building's need for supplemental heat against the curtain walls and glazing, in new or remodeled spaces—without compromizing the building's design aesthetic.

Heat Envelope Protection

THX creates an effective draft barrier, preventing condensation on exterior windows and curtain walls and preserving the primary HVAC system from inefficiency and higher utility costs.

UL listed out of the box

Avoid the time and expense of certifying on site. THX is designed with water and debris management in mind. It features a sealed junction box and raised connections points, plus a wire screen beneath the grille catches debris to prevent it from entering the unit.

Peak Performance, Hidden Package

Get maximum heat output—30% more watts per cu. ft. than the competition1—with the most compact unit in its class2.
1-As of Jan. 2020. 2-Electric, In-Floor Natural Convection Heater.

Speedy service & modularization

THX units come in 2 to 5 foot modular lengths, are factory wired and preassembled for out-of-the-box readiness, drop-in installation, and easy access for cleaning and maintenance, with one service professional.

Perimeter heat that promotes your vision

THX warms air at the base of exterior windows, creating a natural updraft that protects your building’s heat envelope and curtain walls. Windows stay free of fog and condensation and warm air circulates throughout the space with no need for a fan or blower.

See It in Action »

THX ACTUALLY SUPPORTS your primary HVAC, making it run more efficiently, so you save on utility costs.

Customized Heating to Suit Your Exact Specifications

Modular Design

THX saves space while providing maximum output. A single technician can wire and connect multiple units to extend warmth across wider areas.

Customized Heating to Suit Your Exact Specifications

Finishing Flexibility

Leveling and mounting legs allow you to raise each unit to the appropriate height for your space. Choose from three grille color options to fit your aesthetic. View mounting options »

Customized Heating to Suit Your Exact Specifications


THX can be controlled with a low- or line-voltage thermostat. Available BMS-compatible relays tie the unit into your overall climate control system.

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