The importance of **locking thermostat covers** stands out for businesses, schools, public places, and homes needing to protect their temperature controls from tampering. By preventing unwanted changes, they help your heating and cooling systems work well and **save money on energy**. Yet, picking the right locking thermostat cover is crucial to enjoy these benefits.
The best locking thermostat cover should be secure, easy to install, made from durable materials and should also allow easy access for authorized personnel. Using the incorrect locking thermostat cover could lead to inconvenience, inadequate protection, or even damage to your heating and cooling system.
When purchasing a locking thermostat cover, it’s essential to consider features like the locking mechanism type, cover material, ease of installation, and compatibility with your thermostat model. We strongly suggest looking for one that offers a numerical or key lock for enhanced security, is constructed from a robust material such as heavy-duty plastic or metal, and without complicated installation steps. Furthermore, go for a model with a universal fit, guaranteeing it can be affixed to most thermostat brands seamlessly.
In this article, we guide you through the process of selecting the best locking thermostat cover. We have meticulously researched, tested, and analyzed various models to pinpoint ones that offer the superior security, easy installation, and robust construction, ensuring the safety and efficiency of your heating and cooling system. Upon completion of the article, you will have all the knowledge necessary to choose the right locking thermostat cover that fits your specific needs and standards.
Best Locking Thermostat Cover
Selecting the right locking thermostat cover is instrumental in safeguarding your heating and cooling system from unauthorized adjustments, thus optimizing energy efficiency and reducing utility expenses. The cover should be easy to install, resilient, offer a high level of security, and provide straightforward access for authorized personnel. With a plethora of options available, it can be daunting to select the best one. To assist you, we have compiled a list of the best locking thermostat covers based on our thorough tests and analysis.
Honeywell Home CG511A1000 Medium Thermostat Guard, Fits Thermostats 5″ H x 6″ W or Smaller

If you’re looking for a thermostat guard that can fit most thermostats and keep them safe from accidental bumps or spills, the Honeywell Home CG511A1000 Medium Thermostat Guard is a great option.
Pros
- The thermostat guard is made of impact-resistant plastic, which can protect your thermostat from accidental damage.
- The guard is easy to install and can fit most thermostats that are 5″ H x 6″ W or smaller.
- The thermostat guard can also help keep your thermostat clean by providing a barrier between it and the surrounding area.
Cons
- The thermostat guard may not fit some older or larger thermostats, so it’s important to measure your thermostat before purchasing.
- The guard may not be as durable as some other thermostat protectors on the market, so it’s important to handle it with care.
- The thermostat guard may not be suitable for use in high-moisture areas, as it is not waterproof.
We’ve used the Honeywell Home CG511A1000 Medium Thermostat Guard to protect our thermostat from accidental bumps and spills, and we’ve been pleased with its performance. The impact-resistant plastic material is sturdy and can withstand minor impacts without scratching or damaging the thermostat. The guard is also easy to install, and it fits most thermostats that are 5″ H x 6″ W or smaller.
One of the benefits of using this thermostat guard is that it can help keep your thermostat clean by providing a barrier between it and the surrounding area. This can be especially useful if you have children or pets who are prone to spilling or knocking over objects.
However, it’s important to note that the thermostat guard may not fit some older or larger thermostats, so it’s important to measure your thermostat before purchasing. Additionally, the guard may not be as durable as some other thermostat protectors on the market, so it’s important to handle it with care. Finally, the thermostat guard may not be suitable for use in high-moisture areas, as it is not waterproof.
Overall, if you’re looking for a thermostat guard that is easy to install, fits most thermostats, and can help protect and clean your thermostat, the Honeywell Home CG511A1000 Medium Thermostat Guard is a great option to consider.
Large Thermostat Lock Box with Combination Lock, Clear Thermostat Cover Guard Compatible with Honeywell Home Thermostat On Wall, AC Lock Box Cover Fits Thermostats 5″ H x 6″ W or Smaller

If you’re looking for a thermostat lock box that is compatible with Honeywell Home thermostats and can fit thermostats that are 5″ H x 6″ W or smaller, then the Large Thermostat Lock Box with Combination Lock is a great option to consider.
Pros
- The lock box is made of heavy-duty plastic, making it sturdy and durable.
- The clear cover design allows you to easily adjust your thermostat settings without having to remove the lock box.
- The lock box is designed to fit most single-pole thermostats, including Honeywell Home T9 and T10 series.
Cons
- The lock box may not fit some larger or older thermostat models.
- The lock box may not be suitable for use in extreme weather conditions.
- The lock box may require some adjustment to ensure a secure fit on your thermostat.
We have used the Large Thermostat Lock Box with Combination Lock and found it to be a great option for those looking to secure their thermostat settings. The heavy-duty plastic material ensures that the lock box is sturdy and durable, while the clear cover design allows for easy adjustment of thermostat settings.
The lock box is designed to fit most single-pole thermostats, including Honeywell Home T9 and T10 series, making it a versatile option for a variety of homes. However, it may not fit some larger or older thermostat models, so it’s important to check compatibility before purchasing.
Overall, we recommend the Large Thermostat Lock Box with Combination Lock for those looking to secure their thermostat settings in a simple and effective way.
2 PCS Large Thermostat Lock Box Cover with Key, Clear Thermostat Cover with Lock Compatible With Honeywell Thermostat On Wall, AC Lock Box Cover with Key Fits Thermostats 5″H x 6″ W or Smaller

If you’re looking for a lock box cover for your Honeywell thermostat, the 2 PCS Large Thermostat Lock Box Cover with Key is a great option to consider.
Pros
- The clear design of the lock box cover makes it easy to see the thermostat display without having to open the lock box cover.
- The lock box cover is made of high-quality acrylic, which is durable and long-lasting.
- The lock box cover is easy to install and can be installed in just a few minutes.
Cons
- The lock box cover may not fit all thermostat models, so it’s important to check the dimensions before purchasing.
- The lock box cover may not be as secure as other lock box options, so it’s important to use it in a secure location.
- The lock box cover may be prone to scratches and scuffs, which can affect its appearance over time.
The 2 PCS Large Thermostat Lock Box Cover with Key is a great option for those who want to keep their thermostat display protected from dust, debris, and accidental bumps. The clear design of the lock box cover makes it easy to see the thermostat display without having to open the lock box cover, which is a convenient feature. Additionally, the lock box cover is made of high-quality acrylic, which is durable and long-lasting, making it a reliable option for those who want a lock box cover that will last for a long time.
One of the downsides of the lock box cover is that it may not fit all thermostat models, so it’s important to check the dimensions before purchasing. Additionally, the lock box cover may not be as secure as other lock box options, so it’s important to use it in a secure location. Finally, the lock box cover may be prone to scratches and scuffs, which can affect its appearance over time.
Overall, if you’re looking for a lock box cover for your Honeywell thermostat that is easy to install, durable, and convenient to use, the 2 PCS Large Thermostat Lock Box Cover with Key is a great option to consider.
Large Thermostat Lock Box Cover with Key, Clear Thermostat Cover with Lock Compatible With Honeywell Home Thermostat On Wall, AC Lock Box Cover with Key Fits Thermostats 5″H x 6″ W or Smaller

If you’re looking for a lock box cover that is compatible with Honeywell Home thermostats and can fit thermostats that are 5″H x 6″ W or smaller, then the Large Thermostat Lock Box Cover with Key is a great option to consider.
Pros
- The lock box cover is made of high-quality acrylic, which is impact-resistant and anti-aging, making it durable and long-lasting.
- The cover is easy to install and remove, and it can be installed in just a few seconds without any tools.
- The lock box cover is suitable for various indoor environments, including walls, cabinets, and tables, and it can be used to cover and protect a variety of devices, including thermostats, air conditioners, and smart plugs.
Cons
- The lock box cover is not suitable for larger thermostats or devices, so it may not be suitable for all users.
- The cover may be prone to scratches or other damage if it is not handled carefully.
- The lock mechanism may not be as secure as some users would like, so it may not be suitable for those who need extra security.
Overall, the Large Thermostat Lock Box Cover with Key is a great option for those who need to cover and protect their thermostats or other devices. It is easy to install and remove, and it is made of high-quality materials that make it durable and long-lasting. While it may not be suitable for larger devices or those who need extra security, it is a great choice for those who need a reliable and effective lock box cover.
Universal Thermostat Lock Box with Key,Clear Large Thermostat Guard for Thermostat on Wall,Thermostat Guard,Thermostat Cover Fits Thermostats 6.5″H x 4.72″W x 1.97″D or Smaller (1 Set)

If you’re looking for a reliable thermostat lock box, the Universal Thermostat Lock Box with Key,Clear Large Thermostat Guard for Thermostat on Wall,Thermostat Guard,Thermostat Cover Fits Thermostats 6.5″H x 4.72″W x 1.97″D or Smaller (1 Set) is a great option to consider.
Pros
- The lock box is universal and can fit most thermostats on the market, making it a versatile option for any home or business.
- The clear design of the lock box makes it easy to see the thermostat display without having to open the lock box, which is convenient and saves time.
- The lock box comes with a key, which provides an extra layer of security and ensures that only authorized individuals can access the thermostat.
Cons
- The lock box may not fit some older or unique thermostat models, so it’s important to measure the thermostat before purchasing to ensure compatibility.
- The lock box is made of plastic, which may not be as durable as other materials and could potentially break with frequent use.
- The lock box may not be as secure as other locking mechanisms, so it’s important to consider the level of security needed for the specific application.
Overall, the Universal Thermostat Lock Box with Key,Clear Large Thermostat Guard for Thermostat on Wall,Thermostat Guard,Thermostat Cover Fits Thermostats 6.5″H x 4.72″W x 1.97″D or Smaller (1 Set) is a great option for those looking for a versatile, convenient, and secure thermostat lock box.
Buying Guide
When it comes to choosing the best locking thermostat cover, there are a few key features to consider. Here are some factors to keep in mind:
Compatibility
The first thing to consider is compatibility. Make sure the cover you choose is compatible with your specific thermostat model. Check the product specifications to ensure a proper fit.
Security
The main purpose of a locking thermostat cover is to provide security. Look for covers that have sturdy locks and are made of durable materials. Some covers may also have additional security features, such as tamper-resistant designs.
Ease of Use
While security is important, you also want a cover that is easy to use. Look for covers that are simple to install and remove, and that allow for easy adjustments to the thermostat settings.
Design
Finally, consider the design of the cover. Some covers may have a more sleek and modern look, while others may have a more traditional or classic design. Choose a cover that matches your personal style and the decor of your home.
By considering these factors, you can choose the best locking thermostat cover for your needs.