Product Overview
The Serta Heated Mattress Pad Twin Size is designed to provide warmth and comfort. It features smart technology for temperature control and is made from soft microfiber material. This mattress pad is ETL certified, ensuring it meets high safety standards. It includes a controller with 10 heat settings and an auto shut-off timer for prolonged usage confidence. The deep pocket design fits most mattresses up to 18 inches thick.
Key Features:
- 10 Heat Settings: Customize your warmth level.
- 1-12 Hour Auto Shut-Off Timer: For safety and energy efficiency.
- Deep Elastic Pocket: Fits mattresses up to 18 inches thick.
- ETL Certified: Independently tested for safety.
- Machine Washable: Easy to clean and maintain.
- Soft Microfiber Material: Provides comfort and mattress protection.
Product Components

Image: Controller Features. The easy-to-use controller for the Serta Heated Mattress Pad features 10 heat settings, an adjustable 1-12 hour auto shut-off timer, and an 11-foot controller cord for convenient access.

Image: Deep Pocket Design. This image illustrates the 15-inch deep pocket design of the Serta Heated Mattress Pad, featuring 360-degree elastic for a secure fit on mattresses up to 18 inches thick.
Setup and Installation
- Prepare Your Mattress: Ensure your mattress is clean and dry before installation.
- Position the Mattress Pad: Lay the Serta Heated Mattress Pad flat on top of your mattress, ensuring the connector for the controller is positioned at the foot of the bed.
- Secure the Deep Pocket: The mattress pad features a deep elastic pocket. Stretch the elasticized skirt over the corners and sides of your mattress, ensuring a snug and secure fit. The 360-degree elastic is designed to accommodate mattresses up to 18 inches thick.
- Connect the Controller: Locate the connector on the mattress pad and firmly plug in the controller cord. Ensure a secure connection.
- Plug into Power: Plug the power cord from the controller into a standard 120V/60Hz electrical outlet. Ensure the power cord is not covered or pinched.
Video: Serta Electric Mattress Pad Installation. This video provides a visual guide to installing the Serta Electric Mattress Pad and highlights its key features, including the controller and fit.
Video: Fila AZ Electric Mattress Pad Overview. A video presentation of the Serta Fila AZ Electric Mattress Pad, detailing its design, how it fits on a mattress, and its operational aspects.
Operating Instructions
Power On/Off
Press the 'ON/OFF' button on the controller to turn the mattress pad on or off. The backlit LCD display will illuminate when the unit is active.
Adjusting Heat Settings
The controller offers 10 heat settings. Use the '+' and '-' buttons under 'HEAT' to increase or decrease the desired warmth level. Start with a lower setting and adjust as needed for personal comfort.
Setting the Auto Shut-Off Timer
The mattress pad features a 1-12 hour auto shut-off safety timer. Press the 'TIMER' button and use the '+' and '-' buttons to select the desired duration in 1-hour increments. The pad will automatically turn off after the set time.
Dual Zone Temperature Control (for Queen and larger sizes)
Note: This Twin size mattress pad comes with a single controller. Queen and larger sizes feature dual controllers for independent temperature adjustment on each side of the bed.
Care and Maintenance
Cleaning Instructions
The Serta Heated Mattress Pad is conveniently machine washable. Before washing, always detach the controller from the mattress pad. Follow the care label instructions for washing and drying to ensure longevity and proper function.
Storage
To prolong the life of your electric mattress pad, we recommend rolling the mattress pad rather than folding it when storing it. Do not compress it or put anything heavy on top of it. Doing so can cause damage to the wires which could affect functionality.
Troubleshooting
Frequently Asked Questions
- Q: Why is my light blinking?
A: Unplug and reconnect to try again, and make sure the controller is well connected. If it still doesn't work, please reach out directly to customer support for assistance. - Q: My controller feels warm to the touch: Is this a problem?
A: No. The control will feel warm (not hot) to the touch when functioning properly. Even when the controller is on, small amounts of electricity will cycle through it, which may make the controller warm.
Product Specifications
| Brand | Serta |
| Model Name | Heated Mattress Pad Twin Size - Electric Mattress Pad, 10 Heat Setting Controller |
| Model Number | ST55-0272 |
| Size | Twin (39"W x 75"L plus 15"D) |
| Color | White |
| Material | Microfiber, Polyester, Non-woven fabric |
| Fabric Type | Top: 85 Gsm Microfiber; Filling: Light Bonded Polyfill; Bottom: 40gsm Non-woven Fabric, 15" Poly Skirt |
| Special Feature | Deep Pocket |
| Product Care Instructions | Machine Wash |
| Power Cord Length | 6 ft |
| Controller Cord Length | 11 ft |
| Input Voltage | 120V / 60Hz |
| Certifications | ETL Certified |
Warranty and Support
The Serta Heated Mattress Pad comes with a 5-year warranty, ensuring peace of mind regarding product quality and performance. For any questions, troubleshooting assistance, or warranty claims, please contact Serta customer support through their official website or the contact information provided with your purchase.





