Important Safety Information
When using electrical appliances, basic precautions should always be followed to reduce the risk of fire, electric shock and injury to persons, including the following:
- Read all instructions before using this heater.
- Always follow local electrical codes and regulations.
- Do not operate any heater with a damaged cord or plug, or after the heater malfunctions, has been dropped or damaged in any manner.
- Do not use outdoors.
- Avoid placing the heater near flammable materials.
- Ensure proper ventilation when operating.
- Unplug the heater when not in use.
Product Overview
The Uniwatt by Stelpro UCH48T is a heavy-duty portable industrial heater designed for robust heating performance in large spaces or construction sites. It features a durable steel cabinet and advanced safety features.



Setup and Installation
The UCH48T portable heater is designed for easy setup. Follow these steps for safe and effective operation:
- Unpacking: Carefully remove the heater from its packaging. Inspect for any shipping damage.
- Placement: Place the heater on a stable, level surface. Ensure there is adequate clearance from walls, furniture, and any combustible materials (minimum 3 feet / 0.9 meters). Do not block air inlets or outlets.
- Power Connection: The heater comes with a 6ft cable and a V-plug (NEMA 6-30P). Connect the plug directly into a compatible 240V, 30A receptacle. Do not use extension cords or power strips.
- Handle and Cord Storage: The sturdy handle on top of the unit also functions as a convenient cord storage rack. Wrap the power cord around the handle when the heater is not in use or for transport.


Operating Instructions
To operate your Uniwatt by Stelpro UCH48T heater:
- Power On: Once plugged into a suitable outlet, the heater is ready for operation.
- Adjusting Temperature: Locate the adjustable thermostat knob, typically found at the rear of the unit. Turn the knob clockwise to increase the desired temperature setting, and counter-clockwise to decrease it. The heater will cycle on and off to maintain the set temperature.
- Heating Element and Fan: The heater utilizes a nickel-chrome alloy heating element and a fan to efficiently distribute heat. The fan will operate when the heating element is active.
- Thermal Protection: The unit is equipped with automatic thermal protection that resets itself. If the heater overheats, it will automatically shut off and restart once it has cooled down to a safe operating temperature.


Maintenance
Regular maintenance ensures optimal performance and longevity of your heater. Always unplug the heater before performing any maintenance.
- Cleaning: Use a soft, damp cloth to wipe the exterior surfaces of the heater. Do not use abrasive cleaners or solvents.
- Dust Removal: Periodically use a vacuum cleaner with a brush attachment to remove dust from the air intake and outlet grilles. Ensure the heating element and fan blades are free of dust and debris.
- Storage: When not in use, store the heater in a cool, dry place. Use the integrated cord storage to keep the power cord tidy.
- Inspection: Regularly inspect the power cord and plug for any signs of damage. If damaged, do not use the heater and contact customer support.
Troubleshooting
If you encounter issues with your UCH48T heater, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Heater does not turn on. | No power to the outlet; Thermal protection activated; Damaged cord/plug. | Check circuit breaker; Allow heater to cool down; Inspect cord/plug and contact support if damaged. |
| Heater produces no heat, but fan runs. | Heating element issue; Thermostat set too low. | Increase thermostat setting; Contact customer support for heating element issues. |
| Heater cycles on and off frequently. | Thermostat setting too high for room size; Overheating due to blocked airflow. | Lower thermostat setting; Ensure clear airflow around the heater; Clean grilles. |
| Burning smell. | Dust accumulation on heating element; New unit initial burn-off. | Clean heating element; Initial burning smell is normal for new units and should dissipate. If persistent, unplug and contact support. |
If the problem persists after attempting these solutions, please contact Stelpro customer support.
Specifications
Detailed technical specifications for the Uniwatt by Stelpro UCH48T Portable Industrial Heater:
| Feature | Detail |
|---|---|
| Model Number | UCH48T |
| Power Output | 4800/3600 W |
| BTU/h | 16382/12285 BTU/h |
| Voltage | 240 Volts |
| Material | 20-gauge Steel Cabinet |
| Color | Orange |
| Dimensions (H x W x D) | 10.5 in. (26.7 cm) x 12.25 in. (31.1 cm) x 9.63 in. (24.5 cm) |
| Item Weight | 5.7 kg |
| Power Source | AC |
| Mounting Type | Floor Mount |
| Special Features | Adjustable Temperature, Automatic Thermal Protection |
| Included Components | UCH Series Portable Heater |
| Country of Origin | Canada |


Warranty Information
The Uniwatt by Stelpro UCH48T Portable Industrial Heater comes with a 2-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.
For warranty claims or further details, please retain your proof of purchase and contact Stelpro customer support.
Customer Support
For technical assistance, troubleshooting, or warranty inquiries, please contact Stelpro customer support:
- Phone: 1-844-783-5776
- Email: info@stelpro.com
- Address: 1041 Rue Parent, Saint-Bruno-de-Montarville, QC J3V 6L7, Canada
- Website: www.stelpro.com





