1. Product Overview
The ICM Controls ACC-WP03 is a large, universal wallplate designed to provide an insulated backing for thermostat installations. Its primary function is to conceal wall imperfections, such as oversized holes or paint damage, around the thermostat mounting area. The integrated foam backing offers an R-Value insulation, preventing drafts and improving energy efficiency by sealing off air leaks behind the thermostat.
This wallplate is a practical solution for both new installations and renovations, ensuring a clean and professional finish while adding an insulating barrier.
2. What's in the Box
- One (1) ICM Controls ACC-WP03 Universal Wallplate
Note: Thermostat and mounting hardware are sold separately.
3. Setup and Installation
The ACC-WP03 wallplate is designed for easy screw-in installation, typically behind a thermostat. Follow these steps for proper setup:
- Preparation: Ensure the power to the thermostat wiring is turned off at the circuit breaker before beginning any installation.
- Assess Wall Area: Identify the area where the thermostat will be mounted. The wallplate is designed to cover existing imperfections or oversized holes, providing a clean surface for the thermostat.
- Positioning: Place the ACC-WP03 wallplate against the wall, centering it over the thermostat wiring hole. Ensure the wallplate is level.
- Mounting: Use appropriate screws (not included, typically provided with the thermostat) to secure the wallplate to the wall through its designated mounting holes. Do not overtighten.
- Thermostat Installation: Once the wallplate is securely mounted, proceed with the installation of your thermostat according to its specific instructions. The wallplate provides a stable and insulated base for the thermostat.

Figure 1: Front view of the ICM Controls ACC-WP03 Universal Wallplate, showing its rectangular shape and mounting holes. This image illustrates the product's appearance and design.
The insulated foam backing on the wallplate helps to prevent drafts from entering the living space through the wall cavity, contributing to better temperature control and reduced energy consumption.
4. Usage and Application
The ACC-WP03 wallplate is a passive component designed to enhance the installation of various thermostats. It does not have operational controls. Its primary uses include:
- Concealing Imperfections: Effectively covers paint damage, wallpaper tears, or oversized holes left from previous thermostat installations.
- Insulation: The R-Value insulated foam backing minimizes air leakage and drafts, improving the energy efficiency of your HVAC system.
- Aesthetic Enhancement: Provides a clean, finished look for your thermostat installation, especially when upgrading to a smaller thermostat that might not cover the existing wall footprint.
- Universal Fit: Designed to be compatible with a wide range of thermostat models due to its generous dimensions.
5. Maintenance
The ACC-WP03 wallplate requires minimal maintenance. To keep it clean:
- Wipe the surface with a soft, damp cloth.
- Avoid using abrasive cleaners or solvents, as these may damage the finish.
- Ensure the wallplate remains securely mounted to the wall. Periodically check the mounting screws for tightness.
6. Troubleshooting
As a passive component, the ACC-WP03 wallplate has limited troubleshooting scenarios. Most issues relate to installation or fit.
| Problem | Possible Cause | Solution |
|---|---|---|
| Wallplate does not sit flush against the wall. | Uneven wall surface or overtightened screws. | Ensure the wall surface is as flat as possible. Loosen screws slightly if overtightened, then retighten just enough to secure. |
| Drafts still felt around thermostat. | Improper sealing or large gaps around the wallplate. | Ensure the wallplate's foam backing is making full contact with the wall. For very large gaps, consider using additional sealant or caulk around the perimeter of the wallplate before installing the thermostat. |
| Thermostat does not fit properly on the wallplate. | Thermostat dimensions are larger than the wallplate, or mounting holes do not align. | Verify the dimensions of your thermostat against the wallplate's dimensions (7.5" W x 5.6" H). This wallplate is designed to be universal, but some very large or unusually shaped thermostats may not be fully covered. |
7. Specifications
- Model Number: ACC-WP03
- Brand: ICM Controls
- Product Dimensions (Wallplate): 7.5 inches (W) x 5.6 inches (H)
- Overall Product Dimensions (Packaged): 7.5 x 7.5 x 5.6 inches
- Weight: Approximately 3.53 ounces
- Insulation: R-Value insulated foam backing
- Color: White
- Installation Type: Screw-In
- Configuration: Single
- ASIN: B07SWXP6G1
- Date First Available: June 9, 2019
8. Warranty and Support
Warranty information for ICM Controls products is typically provided with the product packaging or can be found on the official ICM Controls website. For specific warranty details, please refer to the documentation included with your purchase or visit www.icmcontrols.com.
For technical support, product inquiries, or assistance with installation, please contact ICM Controls customer service directly. Contact information can usually be found on their official website or on the product packaging.





