1. Important Safety Instructions
Please read all instructions carefully before using this heater. Failure to follow these instructions may result in fire, electric shock, injury to persons, or property damage.
- Overheat Protection: The heater is equipped with an automatic shut-off feature that activates if the internal temperature rises to approximately 105 degrees Fahrenheit (40.5 degrees Celsius) to prevent fire.
- Tip-Over Protection: The heater will automatically shut off if it is accidentally knocked over.
- Placement: Keep combustible materials such as furniture, pillows, bedding, papers, clothes, and curtains at least 3 feet (0.9 m) from the front of the heater and away from the sides and rear.
- Electrical Safety: Risk of electric shock. Do not open the heater. There are no user-serviceable parts inside.
- Do Not Cover: Ensure the heater is never covered during operation to prevent overheating.
2. Product Overview
Familiarize yourself with the components and features of your TRUSTECH OH12 heater.

Figure 2.1: TRUSTECH OH12 Oil-Filled Radiator Heater (White)
This image displays the compact design of the TRUSTECH OH12 oil-filled radiator heater in white, highlighting its portability and simple controls.

Figure 2.2: Key Features of the TRUSTECH OH12 Heater
This image illustrates the main features of the heater, including an adjustable knob, overheat protection, quiet operation, instant warming, portability, convenience, and energy saving.
Product Components:
- Oil Fins: The heating elements that radiate warmth.
- Carry Handle: Integrated handle for easy portability.
- Thermostat Control Dial: Adjusts the desired temperature setting (Off, Low, High).
- Power Switch: On/Off button for the unit.
- Base Feet: Detachable feet for stable placement.
3. Setup
Follow these steps to set up your heater for the first time:
- Carefully remove the heater and all packaging materials from the box.
- Turn the heater upside down on a soft, non-abrasive surface.
- Locate the two base feet included in the packaging.
- Slide each base foot onto the designated slots at the bottom of the heater until they securely click into place.
- Turn the heater to its upright position on a firm, level surface.

Figure 3.1: TRUSTECH OH12 Heater Dimensions
This image provides the dimensions of the heater: 15.1 inches (length) x 5.4 inches (width) x 12.4 inches (height), illustrating its compact size for easy placement.
4. Operating Instructions
Operating your TRUSTECH OH12 heater is simple:
- Plug the heater into a standard 120V AC electrical outlet.
- Turn the Power Switch to the 'ON' position. The indicator light will illuminate.
- Adjust the Thermostat Control Dial to your desired heat setting: 'Low' for gentle warmth or 'High' for faster heating.
- To set a specific temperature, turn the thermostat dial slowly clockwise until you hear a click. The heater will then cycle on and off to maintain the desired warmth.
- When finished, turn the Power Switch to 'OFF' and unplug the heater from the outlet.

Figure 4.1: Adjusting the Thermostat Control Dial
This image shows a hand adjusting the thermostat dial, which allows users to select between Off, Low, and High heat settings, and to set a specific temperature.

Figure 4.2: Quiet and Portable Operation
This image depicts the heater in a bedroom setting, emphasizing its quiet operation suitable for use while sleeping, and its portable design.
5. Maintenance
The TRUSTECH OH12 heater is designed for low maintenance. The internal oil is permanently sealed and does not require refilling or replacement.
- Cleaning: Regularly dust the exterior of the heater with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: When not in use, store the heater in a cool, dry place, preferably in its original packaging.
6. Troubleshooting
If your heater is not operating correctly, refer to the following common issues:
- Heater not turning on: Ensure the power cord is securely plugged into a working electrical outlet. Check if the power switch is in the 'ON' position.
- Heater turns off unexpectedly: This may be due to the built-in overheat protection or tip-over safety features. Ensure the heater is on a stable, level surface and is not covered or obstructed. Allow it to cool down before attempting to restart.
- Insufficient heat: Verify the thermostat control dial is set to a higher temperature or the 'High' setting. Ensure the room size is within the recommended heating coverage of 120 square feet.

Figure 6.1: Overheating Protection Feature
This image highlights the overheating protection feature, showing the heater in a living space with a child, emphasizing its safety for household use.
7. Specifications
| Attribute | Detail |
|---|---|
| Brand | TRUSTECH |
| Model Number | OH12 |
| Special Features | Noiseless, Overheat Protection, Portable |
| Color | Daisy (White) |
| Form Factor | Pedestal |
| Indoor/Outdoor Usage | Indoor |
| Recommended Uses | Home, Office |
| Mounting Type | Stand |
| Room Type | Bedroom, Home Office, Study Room |
| Heating Coverage | 120 square feet |
| Burner Type | Radiant |
| Fuel Type | Electric |
| Voltage | 120 Volts (AC) |
| Amperage | 5.83 Amps |
| Max Temperature Setting | 105 Degrees Fahrenheit |
| Product Dimensions | 15.1 x 5.4 x 12.4 inches |
| Item Weight | 8.58 pounds |
| Date First Available | October 17, 2021 |

Figure 7.1: Recommended Room Usage
This image suggests suitable locations for the heater, including the living room, bedroom, office, or any small room requiring supplemental heat.
8. Warranty and Support
Specific warranty details and customer support contact information for the TRUSTECH OH12 heater are typically provided in the full product manual included with your purchase or can be found on the official TRUSTECH website. Please refer to those resources for comprehensive warranty coverage and support options.





