Thermostat Guards(404)

A thermostat guard—also called a lock box or cover—is a protective enclosure that mounts over your wall thermostat to help prevent unwanted changes. It typically has a hinged, clear front so you can see the display and a lock to limit access.

• Materials: Clear plastic or metal for durability.
• Locks: Keyed or combination styles for controlled access.
• Ventilation: Vented designs help air circulate so readings stay consistent.
• Sizes: Multiple inner dimensions to fit different models.

They’re commonly used in homes, offices, schools, and restaurants. Browse Walmart item pages for dimensions and features to match your setup.

If thermostat settings keep getting changed, a lockable cover can help deter casual tampering without blocking visibility.

1. Measure your thermostat: Note height, width, and depth.
2. Pick a locking style: Keys are simple; combinations allow shared access without key copies.
3. Select a vented design: Vents support airflow and more consistent temperature sensing.
4. Mount carefully: Follow the included instructions and avoid overtightening near the device.
5. Manage access: Store keys securely or share the code only with authorized users.

These steps can help reduce adjustments, but policies and reminders may also be useful in shared spaces.

It’s best to use a purpose‑built thermostat cover designed for this job. These guards are made to protect controls while allowing airflow and visibility.

• Choose vented construction: Vents help the thermostat sense room air rather than trapped heat.
• Go clear when possible: A clear front lets you read the display without opening.
• Check inner dimensions: Ensure the cover won’t press buttons or block side sensors.
• Use a lock if needed: Keyed or combination locks can limit access in shared areas.

Avoid improvised covers (like tape, cloth, or solid boxes), which can affect readings or make routine checks harder.

Start with a quick measurement, then match it to the guard’s listed inner dimensions.

1. Measure H x W x D: Include any wall plate and the thermostat’s deepest point.
2. Add clearance: Leave extra space for airflow and buttons—about 0.5–1 inch can help.
3. Confirm swing space: Make sure the cover can open fully without hitting trim or shelves.
4. Review features: Inner shelves or lips reduce usable space; check diagrams on the item page.
5. Plan ahead: If you may upgrade the thermostat, a larger guard can offer flexibility.

Comparing your measurements to the product’s specs on Walmart.com can make selection easier.

Most lock boxes install with basic tools, but always follow the instructions that come with your specific product.

1. Position the base: Hold it level over the thermostat to confirm clearance and mark holes.
2. Prepare the wall: Use appropriate anchors where needed and avoid drilling near wires.
3. Attach the base: Fasten snugly without flexing the thermostat or wall plate.
4. Set the cover: Align the hinge, confirm vents are oriented correctly, and test the swing.
5. Secure access: Lock it, store keys safely, or set your combination.

If you’re unsure about mounting near wiring, considering professional help can be a safe alternative.