
ROBERTS GORDON® DTH Docked Trailer Heater

Delivering Comfort to Loading Docks
Cold weather often delays operations and reduces worker comfort at loading docks. These tough conditions can make loading and unloading docked trailers a difficult task.
The Roberts-Gordon Docked Trailer Heater (DTH) sets a new standard for dock efficiency, quickly turning cold trailers into warm, workable environments in under seven minutes. Installed directly at the dock door, it stays clear of daily operations while delivering a powerful stream of heated air – no need for in-trailer units or extended warm-up times.
How the Docked Trailer Heater Works
High-velocity fans and premium heating elements inject warm air into the trailer’s top, pushing cold air out the bottom. In just minutes, the trailer reaches warehouse-like temperatures enhancing comfort and keeping your operation moving.
With a built-in fan mode for warmer months, the DTH Docked Trailer Heater supports year-round comfort, enhances employee satisfaction, and helps cut down on energy use and delays.


Proven Performance
*Based on results from 2025 pilot installation in northeastern United States
21.6° F
Air temperature gain in seven minutes
$2K+
In estimated productivity gains per average employee per week
72%
Improvement in dissatisfied people under average conditions

Easy Installation and Operation
The DTH is delivered pre-assembled on a dual-purpose crate/lift. The included mounting kit makes setup fast and easy. Simply mount the unit with the provided mounting kit, then connect electrical power and the control panel. Once the heater is installed, remove and dispose of the crate.
After installation, choose between heat mode, fan mode, or off with the press of a single button. These heaters operate quietly and require minimal overhead space, improving building operations without disrupting workflow or adding noise.
Key Features
- Durable, weather-resistant galvanized steel cabinet
- Available in 13-, 18- or 30-kW heating capacities (kW typically used if >2000 watts)
- Voltage options include 208/3, 240/3, 480/3, and 600/3
- Mounting kit for common installations provided
- Wall-mounted control panel with push-button operation
- Airflow proving switch and automatic reset high-temperature limit switch
- OSHA compliant fan guards and thermal overload protection on fan motor
- Designed for quiet operation
Applications
- Logistics
- Warehouses
- Manufacturing
- Retail
- Grocery
- Automotive
Product Documents
- Brochure/Technical Specification Sheet
- Installation, Operation, and Service Manual
- Revit Drawing

Find A Rep Near You!
Many of our independent representative partners are second and third generation firms. These infrared heating experts can help guide you through the entire buying process from design to installation.