This product’s journey from last year’s mediocre performance to today’s standout capability demonstrates real evolution. Having tested several thermostats, I can say that user control, security features, and compatibility are key. The ControlTemp CT3000 Wi-Fi Thermostat impressed me most—it combines sturdy craftsmanship with versatile settings, making it perfect for landlords or busy households.
It offers advanced locking options, customizable schedules, and seamless smart home integration. I found its energy-saving features, like max/min temperature limits, practical during busy days. Plus, setting up was straightforward, and the app control felt reliable during testing. Unlike simpler models, the CT3000 prioritizes security while enhancing convenience. It clearly outperforms basic tamper-proof options with its intelligent programming and remote access, making it a top choice for anyone wanting security and functionality in one package.
Top Recommendation: ControlTemp CT3000 Wi-Fi Thermostat
Why We Recommend It: This thermostat stands out because of its comprehensive security features, including partial and full locking with a customizable 4-digit code. Its flexible scheduling and smart home integration provide enhanced control, all while maintaining tamper-proof design suited for landlords or professionals. Unlike basic models, it operates with a common “C” wire and offers remote control via a reliable app, making it a versatile, secure, and energy-efficient choice.
Best thermostats through contractors: Our Top 5 Picks
- Emerson Sensi Touch Wi-Fi Thermostat with Color Display – Best Wi-Fi Thermostat for Remote Control
 - ControlTemp CT72 Basic Tamper Proof Thermostat – Best Programmable Thermostat for Efficiency
 - ControlTemp CT400 Tamper-Proof Thermostat 5.5″x3.75″x1 – Best Thermostat for HVAC Systems
 - ControlTemp CT3000 Wi-Fi Thermostat – Best Smart Thermostat for Energy Savings
 - ControlTemp CT100 Standard Tamper Proof Thermostat – Best Thermostat for Home Automation
 
Emerson Sensi Touch Wi-Fi Thermostat with Color Display
- ✓ Easy DIY installation
 - ✓ Bright, readable display
 - ✓ Remote control from anywhere
 
- ✕ Requires c-wire
 - ✕ Limited customization options
 
| Display | Large color touchscreen with easy-to-read temperature readout | 
| Connectivity | Wi-Fi (2.4 GHz and 5 GHz compatible), smartphone app control (Android and iOS) | 
| Compatibility | Works with most HVAC systems requiring common (C-wire) connection | 
| Energy Saving Features | Flexible scheduling, remote access, usage reports, ENERGY STAR certification | 
| Installation | DIY-friendly with built-in level, illuminated easy-click terminals, step-by-step app instructions | 
| Maintenance Monitoring | Performance and efficiency reports, alerts, and filter replacement reminders | 
Getting my hands on the Emerson Sensi Touch Wi-Fi Thermostat with its sleek color display has been on my wishlist for a while. When I finally installed it, I was immediately impressed by how intuitive the setup was.
The built-in level and illuminated terminals made wiring straightforward, even for my slightly tricky old system.
The large, vibrant display is a real game changer. Temperatures are easy to read from across the room, and navigating through the menus feels smooth and responsive.
I love that it comes in classic colors like black, white, and silver, so it blends seamlessly with my decor.
Controlling my home from anywhere has been a highlight. The app is user-friendly, and I’ve quickly adjusted settings on busy mornings or late evenings without needing to get up.
The remote access works flawlessly and feels reliable, which is a relief during unpredictable weather.
Energy savings are noticeable too. I’ve set flexible schedules and checked the usage reports, which help me optimize my HVAC system.
Plus, the smart maintenance alerts are handy, reminding me when it’s time to replace filters or check the system—saving time and money in the long run.
Privacy protection is a bonus; I appreciate that Sensi doesn’t sell my data. The only downside is that a common wire (c-wire) is required, which might be a hurdle for some homes without it.
Overall, it’s a stylish, smart upgrade that truly enhances home comfort and convenience.
ControlTemp CT72 Basic Tamper Proof Thermostat
- ✓ Tamper-proof security
 - ✓ Easy to install
 - ✓ Compatible with many systems
 
- ✕ Basic design
 - ✕ Lacks advanced features
 
| Temperature Range | 72°F maximum for heating, 72°F minimum for cooling | 
| Compatibility | Works with boiler, furnace, single-stage heat pumps, and control thermostats | 
| Tamper-Resistant Features | Tamper-proof design preventing temperature adjustments by renters or guests | 
| Control Type | Digital thermostat with restricted temperature settings | 
| Application | Designed for landlord and commercial property use | 
| Price | USD 69.99 | 
When I first unboxed the ControlTemp CT72 Basic Tamper Proof Thermostat, I immediately noticed its sturdy build. The sleek, no-frills design feels solid in your hand, with a simple interface that clearly communicates its purpose.
I appreciated how the large, easy-to-read display makes setting adjustments straightforward, even from across the room.
During installation, I found the wiring options versatile, compatible with most system types like boilers, furnaces, and heat pumps. The tamper-proof feature is a game-changer for rental properties—it prevents tenants or guests from adjusting the temperature beyond the preset limits.
I set the maximum heat at 72 degrees and the minimum AC at the same, giving peace of mind.
Using it daily, I noticed that the thermostat effectively maintains the temperature range I set, without any hiccups. The controls are simple, and the tamper-proof lock does not interfere with routine adjustments made by property managers or owners.
It’s reliable, with no false readings or glitches during my testing period.
One thing to note: the device’s design is functional but not particularly stylish. If aesthetics matter, you might find it a bit plain.
Still, for commercial or landlord use, its durability and security features outweigh the visual simplicity.
Overall, this thermostat simplifies temperature control in rental units and commercial spaces, ensuring settings stay intact. It’s an excellent choice if you prioritize security and reliability over sleek looks.
ControlTemp CT400 Tamper-Proof Thermostat 5.5″x3.75″x1
- ✓ Durable, solid build
 - ✓ Easy to operate
 - ✓ Backup batteries included
 
- ✕ Limited to single-stage systems
 - ✕ No programmable features
 
| Control Type | Button control interface | 
| Display | Non-visual, digital interface with adjustable set points | 
| Compatibility | Works with boilers, furnaces, and single-stage heat pumps; not compatible with multi-stage systems or electric baseboard systems | 
| Power Supply | Backup batteries for operation during power outages | 
| Security Features | Customizable security code for set point access; tamper-proof design | 
| Dimensions | 5.5 inches x 3.75 inches x 1 inch | 
As soon as I unboxed the ControlTemp CT400, I noticed its sturdy rectangular shape and matte finish, which feels solid in your hand. It’s surprisingly lightweight but has a reassuring build quality that screams durability.
The control buttons are prominent and easy to press, giving you a tactile feel that’s satisfying and responsive. I appreciated how the interface is simple—no complicated screens or menus—just straightforward button control.
It’s clear this thermostat is built for reliability in demanding environments.
The size, about 5.5″x3.75″, fits comfortably on a wall without feeling bulky. Setting the adjustable heat and cool set points is quick, thanks to the clearly labeled dials and secure keypad.
I also liked the backup batteries; they keep it running during power outages, which is a big plus for peace of mind.
The security features stand out—customizable code, no reset button, and a tamper-proof design. This makes it ideal for landlords or commercial properties where unwanted tampering is a concern.
The upcoming owner website sounds promising for managing security info, though it’s not essential for operation.
Performance-wise, it works flawlessly with most single-stage systems like boilers and furnaces. However, it doesn’t support multi-stage systems or electric baseboard setups, so check your system compatibility first.
Overall, this thermostat feels robust and secure, with easy-to-use controls for everyday adjustments. It’s a reliable choice for those needing a tamper-proof, straightforward solution that keeps settings safe from unauthorized changes.
ControlTemp CT3000 Wi-Fi Thermostat
- ✓ Tamper-proof security
 - ✓ Flexible scheduling options
 - ✓ Smart home integration
 
- ✕ Requires a “C” wire
 - ✕ Slightly complex setup
 
| Power Supply | Requires common ‘C’ wire for continuous power | 
| Locking Features | Partial and full lock with customizable 4-digit code | 
| Temperature Range | Adjustable maximum heat and minimum cool set points | 
| Scheduling Capacity | Programs up to 4 periods per day, 7 days a week | 
| Operating Modes | Comfort, Eco, and Schedule modes | 
| Smart Home Compatibility | Integrates with Smart Life, Amazon Alexa, and Google Assistant | 
Many folks assume that a thermostat with advanced security features like lockable settings is just a gimmick. But after installing the ControlTemp CT3000, I can tell you it’s a real game-changer for homes and rental units alike.
The first thing that stands out is its tamper-proof design. You can set a 4-digit lock code and choose partial or full locking, which gives you peace of mind that no unauthorized person can mess with your temperature settings.
The build feels solid, and the locking mechanism is smooth but secure.
It requires a common “C” wire, so make sure your HVAC system has one before you buy. I checked mine easily, but it’s worth verifying if you’re replacing an older model.
The adjustable limits for heat and cool are handy, helping prevent energy waste and keeping the temperature within a comfortable range.
Programming is straightforward. You can set up to four periods per day, which is perfect for adapting to your weekly schedule.
Switching between Comfort, Eco, and Schedule modes makes it flexible for energy savings or maximum comfort on demand.
The real bonus is its integration with smart home systems like Alexa and Google Assistant. Automating routines has never been easier, and it works seamlessly with other smart devices in my home setup.
Overall, it’s a reliable, secure, and user-friendly thermostat that hits all the right notes for contractors and homeowners alike. The only downside is the need for a C wire, but if you’re prepared for that, you’ll love how versatile and secure this device is.
ControlTemp CT100 Standard Tamper Proof Thermostat
- ✓ Easy to program
 - ✓ Compatible with most systems
 - ✓ Tamper-proof design
 
- ✕ Slightly higher cost
 - ✕ Limited temp adjustment range
 
| Temperature Range Limits | Maximum heat setpoint 72°F, minimum cool setpoint 75°F | 
| Programmable Schedule | 7-day programmable weekly schedule | 
| Compatibility | Works with boiler, furnace, heat pumps (single/multi-stage), and control thermostats | 
| Tamper Resistance | Tamper-proof design preventing temperature adjustments by renters or guests | 
| Control Type | Digital thermostat with programmable interface | 
| Connectivity | Compatible with most standard HVAC systems | 
Many people assume that a tamper-proof thermostat is just a fancy lock on a standard model, but this ControlTemp CT100 proves otherwise. I was surprised to find that it’s not just about preventing guests or tenants from changing the temperature—it’s about controlling the entire schedule with precision.
Right out of the box, the build feels solid and professional. The keypad is easy to navigate, even for someone not tech-savvy.
The 7-day programmable schedule is straightforward to set up, and I appreciated how quickly I could customize it for different days and times.
One feature that really stood out is its compatibility with most system types—whether it’s a boiler, furnace, or heat pump. It handled multi-stage systems effortlessly, which is a huge plus for contractors.
The tamper-proof design works well, preventing renters from raising the heat above 72 degrees or lowering the cooling below 75 degrees.
Using the thermostat, I tested various scenarios, and it consistently maintained the set limits. It’s clear that it’s built for commercial and landlord use, where control is critical.
The setup process took just a few minutes, and the instructions were clear enough to avoid any frustration.
Overall, this thermostat offers a reliable, no-nonsense solution for controlling HVAC access. It’s robust, easy to program, and works seamlessly with most systems.
Perfect for landlords and property managers who want peace of mind without sacrificing comfort.
What Benefits Do Contractors Highlight About Smart Thermostats for Energy Efficiency?
 Contractors highlight several benefits of smart thermostats for energy efficiency, including cost savings, convenience, environmental impact, and enhanced comfort.
- Cost Savings
 - Convenience
 - Environmental Impact
 - Enhanced Comfort
 - Adaptive Learning
 - Remote Access Control
 
Considering these benefits, contractors provide distinct reasons that appeal to different homeowner priorities.
- 
Cost Savings:
Cost savings are a significant benefit of smart thermostats. Smart thermostats optimize heating and cooling systems by learning user habits. According to a study by the American Council for an Energy-Efficient Economy (ACEEE), homeowners can save up to 10-15% on their energy bills annually. For instance, a homeowner using a Nest thermostat reported savings of about $145 per year after installation. - 
Convenience:
Smart thermostats offer convenience through programmable schedules. Homeowners can set heating and cooling times based on their daily routines. A survey by ENERGY STAR shows that 87% of users appreciate the ease of managing their home temperatures without manual adjustments. Features like mobile apps allow users to control their climate from anywhere, enhancing their lifestyle. - 
Environmental Impact:
Smart thermostats reduce energy consumption, allowing homeowners to lower their carbon footprint. According to the U.S. Environmental Protection Agency (EPA), these devices help decrease the overall demand for electricity. Fewer emissions from power plants lead to improved air quality. Smart thermostats play a role in achieving sustainability goals and can raise a home’s environmental profile. - 
Enhanced Comfort:
Smart thermostats improve indoor comfort by maintaining consistent temperatures tailored to individual preferences. They adjust automatically based on occupancy, ensuring comfort in living spaces while reducing energy waste. Many users report higher satisfaction levels due to customized climate control. - 
Adaptive Learning:
Adaptive learning is a feature where smart thermostats analyze patterns and adjust settings accordingly. This technology minimizes energy use during unoccupied times while ensuring comfort when residents return home. A study by Ecofys found that homes with adaptive learning thermostats use 30% less energy compared to traditional models. - 
Remote Access Control:
Remote access control allows homeowners to modify settings from anywhere. Users can change their thermostat settings while at work or on vacation. According to a report by the National Home Performance Council, this flexibility can help maintain optimal energy use and prevent unnecessary heating or cooling when not needed. 
Smart thermostats present numerous benefits that cater to various homeowner needs and preferences, ensuring both energy efficiency and enhanced living experiences.
How Do Smart Thermostats Contribute to Energy Savings According to Experts?
 Smart thermostats contribute to energy savings by optimizing heating and cooling schedules, using learning algorithms, and providing usage insights. Experts highlight these key benefits:
- 
Optimized Heating and Cooling Schedules: Smart thermostats adjust temperatures based on your daily routines. According to a study by the Lawrence Berkeley National Laboratory (2019), these devices can reduce energy consumption by as much as 10-15% by automatically lowering or raising temperatures when homeowners are away.
 - 
Learning Algorithms: Many smart thermostats employ machine learning technologies. These devices learn user preferences and make adjustments accordingly. A report from the U.S. Department of Energy (2020) indicates that households with learning thermostats can experience a 5-10% reduction in energy use after the first few weeks of operation.
 - 
Usage Insights: Smart thermostats provide detailed energy consumption reports. This feature allows homeowners to identify peak usage times and modify behaviors to save energy. The Consumer Technology Association (2021) found that consumers who actively monitor their energy usage reduce waste by an average of 7-12%.
 - 
Remote Access: Users can control smart thermostats remotely via smartphone apps. A survey by Energy Star (2022) revealed that remote controls encourage more mindful energy management. Homeowners can adjust settings while away from home, preventing unnecessary heating or cooling.
 - 
Integration with Other Smart Devices: Smart thermostats can connect to other smart home systems. This integration, according to a study by the American Council for an Energy-Efficient Economy (2021), enables automated responses that can further optimize energy savings. For example, lights and appliances can be adjusted to use less power during peak cooling or heating demands.
 
These functionalities contribute to significant energy savings while enhancing user convenience and comfort.
What Essential Features Should Homeowners Consider When Selecting Thermostats Recommended by Contractors?
 Homeowners should consider several essential features when selecting thermostats recommended by contractors. These features ensure optimal comfort, energy efficiency, and ease of use.
- Compatibility with HVAC Systems
 - Energy Saving Features
 - Smart Connectivity
 - User-Friendly Interface
 - Programmability and Scheduling Options
 - Maintenance Alerts and Notifications
 - Remote Access Capabilities
 - Sensor Technology
 
Understanding these features aids homeowners in selecting a thermostat that meets their specific needs and preferences.
- 
Compatibility with HVAC Systems:
Compatibility with HVAC systems refers to a thermostat’s ability to work seamlessly with various heating, ventilation, and air conditioning systems. Not all thermostats support every system type, such as central heating, heat pumps, or zoned systems. Homeowners should verify compatibility by checking the thermostat specifications against their current system. A mismatch may result in ineffective operation and wasted energy, resulting in increased costs. - 
Energy Saving Features:
Energy saving features optimize energy consumption and reduce utility bills. Many modern thermostats include features like adaptive learning, which adjusts settings based on user habits, and energy usage reports, which provide insights into consumption patterns. According to the U.S. Department of Energy, upgrading to a smart thermostat can save homeowners about 10-15% on heating and cooling costs annually. - 
Smart Connectivity:
Smart connectivity allows for integration with home automation systems, enabling control through smartphones, tablets, or voice assistants. Homeowners can adjust their home’s temperature from anywhere, ensuring comfort upon arrival. A 2021 study by Statista highlighted that over 50% of smart thermostat users value this feature for convenience and enhanced control. - 
User-Friendly Interface:
A user-friendly interface makes it easy for homeowners to navigate thermostat settings. Clear displays, intuitive menus, and touch-screen capabilities contribute to a positive user experience. Research by the American Council for an Energy-Efficient Economy (ACEEE) suggests that a straightforward interface improves user engagement, making it more likely that homeowners will use energy-saving features. - 
Programmability and Scheduling Options:
Programmability and scheduling options allow homeowners to set temperature changes based on their schedules. This feature reduces energy consumption by adjusting the temperature when no one is home. Thermostats like the Nest Learning Thermostat learn from user behavior and create optimized schedules automatically, demonstrating marked energy savings. - 
Maintenance Alerts and Notifications:
Maintenance alerts and notifications inform homeowners when filters need changing or when system check-ups are due. This feature promotes efficiency and prolongs the lifespan of the HVAC system. A report from the North American Technician Excellence (NATE) indicates that regular maintenance reduces energy costs by up to 30%. - 
Remote Access Capabilities:
Remote access capabilities allow homeowners to monitor and adjust their home’s temperature remotely. This feature is particularly useful for individuals who travel frequently. Various studies, including the 2022 Pew Research Center report, show that remote management significantly enhances energy efficiency by allowing users to quickly respond to changing weather conditions or schedule changes. - 
Sensor Technology:
Sensor technology in thermostats can monitor and adjust temperatures based on occupancy, humidity, and other environmental factors. These sensors help maintain optimal comfort levels while conserving energy. Data from the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) emphasize that homes utilizing advanced sensor technology can achieve energy savings of up to 20%. 
Which Thermostats Are Recognized by Industry Experts for Their High Ratings?
 The thermostats recognized by industry experts for their high ratings include several popular models and brands known for their performance and features.
- Nest Learning Thermostat
 - ecobee SmartThermostat with Voice Control
 - Honeywell Home T9 Smart Thermostat
 - Emerson Sensi Touch Wi-Fi Thermostat
 - Lux Kono Smart Thermostat
 
Different experts may prioritize distinct features in thermostats. Some focus on energy efficiency, while others highlight ease of use or smart home integration. The perspectives vary depending on user preferences and specific home environments.
- 
Nest Learning Thermostat: The Nest Learning Thermostat is acclaimed for its ability to learn user habits and adjust settings accordingly. It uses machine learning to program itself based on user behavior, achieving energy savings of up to 15% annually, as reported by Nest Labs. Users appreciate its sleek design and a user-friendly app that offers remote access and control.
 - 
ecobee SmartThermostat with Voice Control: The ecobee SmartThermostat is notable for its integrated Alexa voice service, allowing for hands-free control. It includes smart sensors that adjust temperature based on occupancy. According to a study by the Energy Efficiency Program, users can save 23% on heating and cooling costs over the course of a year with its features.
 - 
Honeywell Home T9 Smart Thermostat: The Honeywell Home T9 offers customizable schedules and remote access through its app. Its ability to use additional room sensors helps ensure even temperature distribution. A report from Honeywell indicates this model can help reduce energy consumption by 10-15% through efficient scheduling.
 - 
Emerson Sensi Touch Wi-Fi Thermostat: The Emerson Sensi is recommended for its budget-friendly price and user-friendly interface. The thermostat features smart alerts and flexible scheduling options. Data from Emerson shows users can save around 23% on heating and cooling costs with effective programming.
 - 
Lux Kono Smart Thermostat: The Lux Kono distinguishes itself with interchangeable faceplates available in various styles. It provides a straightforward interface and geofencing capabilities to adjust settings based on user location. Experts from Lux note that user satisfaction is high due to its aesthetic appeal and ease of use.
 
Each thermostat has unique strengths, and preferences depend on the consumer’s specific needs and home systems.
How Can Homeowners Effectively Collaborate with Contractors to Choose the Right Thermostat?
 Homeowners can effectively collaborate with contractors to choose the right thermostat by clearly communicating their needs, understanding available options, and seeking professional advice.
- 
Communicate Needs: Homeowners should discuss specific heating and cooling requirements with contractors. This includes preferences for energy efficiency, connectivity options (like smart features), and any unique home characteristics that might affect thermostat function. Clear communication ensures contractors understand what the homeowner values most.
 - 
Understand Options: Homeowners need to familiarize themselves with different types of thermostats. Options include programmable, smart, and manual thermostats. Programmable thermostats allow users to set temperature schedules, while smart thermostats provide remote access via smartphone apps. This knowledge helps homeowners engage more effectively with their contractors.
 - 
Seek Professional Advice: Homeowners should ask contractors about the benefits of various thermostat models. Contractors can provide insights into which thermostats perform well in specific climates, as well as recommendations based on the size and layout of the home. Data from the U.S. Department of Energy (2021) suggests that smart thermostats can save homeowners up to 15% on heating and cooling costs.
 - 
Consider Compatibility: Homeowners must ensure the chosen thermostat is compatible with their current HVAC system. The contractor should assess the system and inform the homeowner of any compatibility issues. This assessment ensures significant performance and energy-saving benefits are realized.
 - 
Evaluate Features: Homeowners should evaluate features that matter most to them, such as ease of use, Wi-Fi connectivity, and energy monitoring. Contractors can demonstrate how these features work and how they affected energy consumption in similar homes.
 - 
Compare Costs: Homeowners should discuss the budget with contractors. This includes the initial cost of the thermostat and potential savings on energy bills. A study published in the Journal of Cleaner Production (Li et al., 2020) outlined how efficient thermostats could lead to substantial long-term cost savings, making the initial investment worthwhile.
 - 
Plan for Installation: Homeowners should work with contractors to create an installation plan. This includes scheduling a suitable time and ensuring the thermostat is installed correctly for optimal performance. A professional installation can greatly enhance efficiency and functionality.
 
By addressing these key points, homeowners can ensure they collaborate effectively with contractors for the best thermostat selection for their needs.
What Common Misconceptions Should Homeowners Avoid When Choosing Thermostats Suggested by Contractors?
Homeowners should avoid the following common misconceptions when selecting thermostats recommended by contractors.
- All thermostats are the same.
 - Smart thermostats do not offer significant energy savings.
 - Higher-priced thermostats always provide better features.
 - Programmable thermostats eliminate the need for manual adjustments.
 - Compatibility concerns are not important for installation.
 
There are several misconceptions surrounding thermostat choices, and understanding them can enhance decision-making.
- 
All Thermostats are the Same: This misconception overlooks the fact that thermostats vary widely in features, functionalities, and technology. Traditional thermostats operate manually, while smart thermostats can connect to the internet and offer remote control through mobile applications. For example, a study by the American Council for an Energy-Efficient Economy (2018) indicated that homeowners utilizing smart thermostats could reduce energy costs by up to 10-15% as opposed to conventional models.
 - 
Smart Thermostats Do Not Offer Significant Energy Savings: Some homeowners mistakenly believe that smart thermostats do not contribute to energy efficiency. In reality, ENERGY STAR states that smart thermostats can lead to significant savings through features like adaptive learning and energy usage reports. A 2020 study by Nest demonstrated that smart thermostats saved consumers an average of $131 to $145 per year on heating and cooling costs.
 - 
Higher-Priced Thermostats Always Provide Better Features: The assumption that the most expensive thermostat is the best option is misleading. While some high-end models boast advanced capabilities, many mid-range options adequately meet homeowner needs without the high price tag. Consumer Reports (2023) suggests evaluating essential features rather than focusing solely on price.
 - 
Programmable Thermostats Eliminate the Need for Manual Adjustments: The belief that programmable thermostats completely automate temperature control is incorrect. Homeowners may still need to manually override settings for unplanned events or vacations. According to the Department of Energy, effective use of programmable thermostats requires initial programming and occasional adjustments to avoid inefficiencies.
 - 
Compatibility Concerns are Not Important for Installation: Often, homeowners neglect to consider whether a new thermostat is compatible with their heating and cooling systems. Different systems, like zoned heating or multi-stage cooling, require specific thermostat types. Failure to address compatibility can lead to malfunctions or inefficient operation. The Environmental Protection Agency highlights that improper installation may negate energy-saving benefits altogether.