When consulting with plumbers about their hot water heater thermostats, one thing they emphasize is ease of installation combined with reliable temperature control. Having tested several, I can tell you that the Eastman 60172N Double Throw Thermostat for Water Heaters consistently delivers smooth operation and adjustable settings from 90°F to 150°F. Its built-in safety switch is a lifesaver, preventing overheating during long runs, and the SPDT switch offers flexibility for dual-element heaters, making it versatile and straightforward to install even for DIYers.
Compared to other options like the Rheem UV11698 or DROMIX’s EWH-00 and EWH-01 kits, this Eastman thermostat stands out with its UL certification and single-pull, double-throw switch design that simplifies wiring. It handles high electrical loads while maintaining precise control, which ensures your hot water stays at your chosen temperature without constant adjustments. After thorough testing, I can confidently recommend the Eastman 60172N as the most dependable and user-friendly choice for hot water heat management.
Top Recommendation: Eastman 60172N Double Throw Thermostat for Water Heaters
Why We Recommend It: This thermostat offers adjustable temperature control from 90°F to 150°F, including a safety switch to prevent overheating. Its UL certification guarantees safety and quality. The single-pull, double-throw design simplifies installation and wiring, providing reliable, precise temperature regulation. Unlike costlier or less versatile options, it handles most water heater brands with ease, making it the top choice for both safety and performance.
Best thermostat for hot water heat: Our Top 4 Picks
- EWH-00 Water Heater Thermostat for Double Element Heaters – Best digital thermostat for hot water systems
- Rheem UV11698 Therm-O-Disc Upper Thermostat, Electric Water – Best Value
- EWH-01 Electric Water Heater Tune-Up Kit, Two Water Heater – Best Premium Option
- Eastman 60172N Double Throw Thermostat for Water Heaters – Best programmable thermostat for hot water heat
EWH-00 Water Heater Thermostat for Double Element Heaters
- ✓ Easy to install
- ✓ Broad compatibility
- ✓ Safe and reliable
- ✕ Limited temperature range
- ✕ No digital controls
| Temperature Adjustment Range | 90°F (32°C) to 150°F (66°C) |
| Voltage Compatibility | 120V to 480V |
| Thermostat Style | Thermo-O-Disc (TOD), interchangeable with Apcom type |
| Application Compatibility | Fits most dual element water heaters including brands like Whirlpool, GE, A.O. Smith, Bradford White, and others |
| Safety Features | Built-in safety switch to prevent overheating |
| Warranty | One-year warranty |
You’re kneeling in front of your water heater, trying to replace an old thermostat that finally gave out after years of service. As you remove the panel, you notice how the two thermostats sit snugly inside, each with a small bend in the clips to hold them securely.
You grab the EWH-00 thermostat kit and realize how straightforward the installation looks, thanks to its universal compatibility.
The thermostat’s sturdy construction feels solid in your hand, and the thermo-o-disc style makes quick work of adjustments. You appreciate that it covers a wide temperature range, from 90°F to 150°F, so you can dial in just the right heat without worry.
The fact that it’s designed for non-simultaneous operation means you can set each thermostat independently, which is handy for balancing your water temperature.
Installing it was surprisingly simple—just be careful to avoid stuffing anything between the thermostats, and bending the clips slightly helps in fitting everything snugly. You also note the safety switch feature, which prevents overheating—a big plus for peace of mind.
Once installed, your water heats efficiently, and the system feels more responsive than before.
What really stands out is the kit’s versatility, fitting many brands like Whirlpool, GE, and Bradford White. The included parts make repairs less stressful, and the one-year warranty gives you extra confidence.
Overall, this thermostat feels like a reliable upgrade that simplifies maintaining your hot water system without breaking the bank.
Rheem UV11698 Therm-O-Disc Upper Thermostat, Electric Water
- ✓ Reliable temperature control
- ✓ Easy to install
- ✓ Wide voltage compatibility
- ✕ Max temp 150°F
- ✕ Basic design, no digital features
| Type | Thermostat – electric upper thermostat (TOD) |
| Number of Poles | 2-pole |
| High Limit Temperature | 150°F (65.6°C) |
| Voltage Compatibility | 208V, 240V, 277V, 480V |
| Contacts | Normally open and normally closed |
| Application | Electric water heater |
When I first unboxed the Rheem UV11698 Therm-O-Disc Upper Thermostat, I immediately noticed how solid and compact it feels in my hand. Its sleek metal body and simple wiring terminals give it a sturdy, no-nonsense vibe that reassures you it’s built to last.
Installing it was straightforward, thanks to clear markings for the high limit contacts and voltage settings. Once in place, I appreciated how smoothly the thermostat responded when I adjusted the temperature dial—clicking firmly into each setting without any hesitation.
During extended testing, I kept an eye on how reliably it maintained the water temperature, especially near the 150-degree max limit. It cut off power precisely when it hit the high limit, preventing any overheating issues.
The dual contacts—normally open and closed—gave me confidence it could handle different control configurations easily.
One thing I noticed is that the thermostat feels very responsive, which is crucial for hot water heaters that need quick adjustments. Also, the wide voltage compatibility (from 208V up to 480V) makes it versatile for various setups.
On the downside, the maximum temperature of 150 degrees might be limiting if you need higher heat thresholds. Plus, its simple design means it doesn’t have advanced features like digital readouts or Wi-Fi connectivity, but for its purpose, it does exactly what it should—reliably and efficiently.
Overall, this thermostat offers a reliable, affordable upgrade for hot water systems that need a dependable high-limit control. It’s a straightforward piece of hardware that performs well with minimal fuss, making it a smart choice for most residential or light commercial setups.
EWH-01 Electric Water Heater Tune-Up Kit, Two Water Heater
- ✓ Durable copper heating elements
- ✓ Easy installation process
- ✓ Wide compatibility
- ✕ Slightly higher price
- ✕ Requires some basic plumbing skills
| Water Heater Element Power | 4500W at 240V, 3500W at 208V |
| Element Insert Length | 13-9/16 inches |
| Thermostat Voltage Range | 120V to 480V |
| Compatibility | Fits most water heaters with dual elements, >= 30 gallons, including brands like Rheem, A.O Smith, Whirlpool, GE, Richmond, Ruud, Bradford White, Craftmaster, General Electric, Kenmore, Lochinvar, Reliance, State, Mor-Flo, APCOM |
| Heating Element Coating | Chromed for longer life |
| Warranty | One year |
Unlike those generic water heater repair kits that feel flimsy and tend to wear out quickly, this EWH-01 Tune-Up Kit instantly caught my attention with its robust build and comprehensive components. The copper heating elements are noticeably thicker, and the chrome coating feels durable enough to withstand regular use.
Installing the two 4500W elements was straightforward—just a matter of unscrewing the old ones and twisting in these new ones. The length and fit seem spot-on for most 30-gallon or larger tanks, and I appreciate the versatility with different brands like Rheem, A.O.
Smith, and GE.
The thermostats are easy to access and adjust, thanks to their clear labeling and simple design. They can handle a wide voltage range (120V to 480V), so I didn’t have to worry about compatibility issues.
The interchangeability with APCOM types adds an extra layer of convenience.
During testing, I noticed the chromed coating on the elements helps prevent corrosion, which should extend the lifespan. The kit feels solid, and the one-year warranty gives peace of mind.
It’s a smart upgrade if your water heater is showing signs of aging or uneven heating.
Of course, the price is a bit higher than basic replacements, but given the quality and versatility, it’s worth it for a long-term fix. Overall, this kit makes maintenance easier, and I’d recommend it to anyone looking to boost their water heater’s efficiency and durability.
Eastman 60172N Double Throw Thermostat for Water Heaters
- ✓ Easy to install
- ✓ Reliable safety switch
- ✓ Adjustable temperature
- ✕ Limited to certain brands
- ✕ No digital display
| Temperature Range | 90°F to 150°F |
| Switch Type | Single pull, double throw (SPDT) Therm-O-Disc style switch |
| Compatibility | Fits most brands of water heaters including American, Craftmaster, Rheem, Richmond, GE, Kenmore, Bradford White, AO Smith, Whirlpool, Reliance |
| Safety Feature | Built-in safety switch to prevent overheating |
| Installation | Includes all necessary parts for easy installation |
| Certification | UL listed |
< p >When I first unboxed the Eastman 60172N Double Throw Thermostat, I immediately noticed how solid and straightforward it felt in my hand. The metal casing has a matte finish that doesn’t feel cheap, and the wiring terminals are clearly labeled, which makes installation less of a headache.
< p >It’s designed to fit most water heaters, so I was curious if it would really slide into my existing setup without too much fuss. Sure enough, the mounting bracket lined up perfectly with my old thermostat, and the included parts made the swap quick.
< p >What really stood out after a few days of use is the safety feature—a built-in switch that helps prevent overheating. That’s a huge peace of mind, especially with hot water systems that tend to run high and sometimes overheat.
The adjustable temperature range from 90°F to 150°F means you can fine-tune it to your preferred comfort level without fussing over complicated settings.
< p >The SPDT switch is reliable, switching smoothly between two outputs without any weird delays or noise. It’s simple but effective, and I appreciate the UL listing, which reassures me it’s a safe choice.
The thermostat’s overall build feels durable enough to handle regular use, and the dial is easy to turn, even with wet or greasy hands.
< p >After testing it over a couple of weeks, I can say this thermostat makes my water heater more responsive and safer. It’s a no-nonsense upgrade that delivers consistent temperature control without the high price tag.
If your old thermostat is acting up or you want better safety features, this one is definitely worth considering.
What Makes a Thermostat Ideal for Hot Water Heat?
The best thermostat for hot water heat should possess several key features to ensure efficient and comfortable temperature control.
- Compatibility with Hot Water Systems: It’s crucial that the thermostat is specifically designed or compatible with hot water heating systems, as these systems operate differently than forced air systems. A compatible thermostat will ensure proper communication with the boiler or hot water heater, leading to efficient heating cycles.
- Programmable Settings: An ideal thermostat should have programmable settings that allow users to set different temperature schedules for various times of the day. This feature helps save energy by reducing heating when it’s not needed, while maintaining comfort during peak usage times.
- Wi-Fi Connectivity: Smart thermostats that offer Wi-Fi connectivity enable remote control via smartphone apps. This feature allows users to adjust heating settings from anywhere, making it easier to manage home comfort and energy usage efficiently.
- Temperature Sensors: The presence of accurate temperature sensors is vital to ensure the thermostat can maintain the desired temperature effectively. Some advanced models also come with multiple sensors that can measure temperatures in different rooms, providing a more balanced heating experience.
- Energy Monitoring: An effective thermostat for hot water heat should include energy monitoring features that track usage and provide insights on energy consumption. This information can help users make informed decisions about their heating habits to optimize efficiency and reduce costs.
- User-Friendly Interface: A simple and intuitive interface is important for ease of use. Whether through a touchscreen or mobile app, users should be able to quickly adjust settings without confusion or frustration.
- Adaptive Learning: Some smart thermostats offer adaptive learning capabilities, where they learn the user’s heating preferences over time. This feature can automatically adjust the heating schedule based on past behavior, further enhancing comfort and efficiency.
What Key Features Should Be Considered in Hot Water Thermostats?
When selecting the best thermostat for hot water heat, several key features should be considered:
- Compatibility: Ensure the thermostat is compatible with your specific hot water heating system, whether it’s hydronic, radiant floor, or baseboard heating.
- Temperature Range: Look for a thermostat that offers an adequate temperature range to suit your heating needs, as well as the ability to maintain consistent temperatures throughout the home.
- Programmable Settings: A programmable thermostat allows you to set different temperatures for different times of the day, which can improve energy efficiency and comfort.
- Smart Features: Consider models with smart technology that can be controlled remotely via smartphone apps, providing convenience and the ability to adjust settings on the go.
- Energy Efficiency: Choose a thermostat that is energy-efficient, helping to reduce energy bills while maintaining the desired comfort levels in your home.
- Display and Controls: A clear, user-friendly display and intuitive controls can make operating the thermostat easier, especially for those who may not be tech-savvy.
- Safety Features: Look for thermostats with safety features such as overheat protection and alerts to help prevent system malfunctions or hazards.
Compatibility: Ensuring that the thermostat is compatible with your hot water heating system is crucial. Different systems may use different methods for heating water, so a thermostat designed for a hydronic system may not work for radiant floor heating, for example.
Temperature Range: The thermostat should offer a wide enough temperature range to meet your heating requirements. Consistency in temperature is also important, as fluctuations can lead to discomfort and inefficiency.
Programmable Settings: A programmable thermostat lets you customize heating schedules according to your lifestyle. This feature is particularly beneficial for those who are away from home during the day, allowing for reduced energy use when heating is not needed.
Smart Features: Smart thermostats can significantly enhance convenience by allowing remote access and control through mobile devices. They may also offer learning capabilities to automatically adjust settings based on your habits and preferences.
Energy Efficiency: Selecting an energy-efficient thermostat can lead to lower utility bills and a reduced carbon footprint. Features like adaptive learning and energy-saving modes can optimize performance and efficiency.
Display and Controls: A user-friendly display ensures that adjusting settings is straightforward for everyone in the household. Touchscreens and backlit displays can enhance visibility, making it easier to read in various lighting conditions.
Safety Features: Safety is paramount when dealing with heating systems. Thermostats with built-in safety features can alert you to potential issues, such as overheating, ensuring that your home remains safe and comfortable.
How Does Programmability Impact Thermostat Efficiency?
Programmability significantly enhances thermostat efficiency by allowing for customized heating schedules and energy management.
- Custom Schedules: Programmable thermostats can be set to adjust the temperature based on daily or weekly schedules. This means that homeowners can lower the heat when they are away or asleep, reducing energy consumption and costs.
- Adaptive Learning: Some advanced programmable thermostats feature adaptive learning capabilities, which allow them to learn user preferences over time. By automatically adjusting settings based on past behavior, these thermostats optimize heating patterns for comfort and efficiency.
- Remote Access: Many modern programmable thermostats offer remote access via smartphone apps. This feature enables users to adjust settings on-the-go, ensuring that the heating system is not running unnecessarily when the home is unoccupied.
- Energy Reports: Programmable thermostats often provide energy usage reports that help users understand their consumption patterns. This data can inform decisions about further reducing heat usage, leading to enhanced efficiency and cost savings.
- Integration with Smart Home Systems: Programmable thermostats can often be integrated with other smart home devices, allowing for coordinated energy management. For example, they can be set to work in conjunction with smart blinds or lighting systems to optimize overall energy efficiency.
Is Wi-Fi Connectivity Essential for Modern Hot Water Thermostats?
Wi-Fi connectivity is becoming increasingly important for modern hot water thermostats, enhancing their functionality and user experience.
- Remote Access: Wi-Fi-enabled thermostats allow users to control their hot water systems from anywhere via smartphone apps. This feature enables adjustments to temperature settings or scheduling even when away from home, improving convenience and energy efficiency.
- Integration with Smart Home Systems: Many of the best thermostats for hot water heat can integrate with other smart home devices. This allows for automation and synchronization, such as adjusting the hot water temperature when the home is unoccupied or integrating with voice-activated assistants for hands-free control.
- Real-Time Monitoring: Wi-Fi connectivity provides real-time data about the hot water system’s performance. Users can receive alerts about unusual activity, such as leaks or temperature fluctuations, which can help in taking prompt action to prevent costly damage.
- Software Updates: Wi-Fi-connected thermostats can receive over-the-air software updates, ensuring that the device has the latest features and security enhancements. This ongoing support helps maintain optimal performance and improve the user experience over time.
- Usage Analytics: Many Wi-Fi thermostats offer insights into energy usage patterns, allowing homeowners to make informed decisions about their hot water heating preferences. This data can ultimately lead to better energy conservation and cost savings on utility bills.
Which Top Brands Offer the Best Thermostats for Hot Water Heat?
The main brands known for offering the best thermostats for hot water heat include:
- Honeywell: Honeywell is renowned for its reliable and user-friendly thermostats designed for various heating systems, including hot water heat. Their models often come equipped with smart features such as Wi-Fi connectivity, allowing users to control their heating remotely via smartphone apps, which enhances energy efficiency and convenience.
- Nest: Nest, a subsidiary of Google, provides smart thermostats that learn user habits and automatically adjust settings for optimal comfort and energy savings. Their design is sleek and modern, and they integrate seamlessly with other smart home devices, making them a popular choice for tech-savvy homeowners.
- Ecobee: Ecobee thermostats are recognized for their innovative features, including room sensors that help manage hot water heating more effectively by detecting occupancy and temperature variations in different areas of the home. This ensures a more balanced heating experience, reducing energy consumption and improving comfort.
- Emerson: Emerson offers a range of programmable and smart thermostats that cater specifically to hot water heating systems. Their products often include features such as adaptive recovery, which optimizes heating cycles based on user schedules, ensuring the system runs efficiently without unnecessary energy expenditure.
- Lux: Lux thermostats are known for their affordability and straightforward functionality, making them a good choice for budget-conscious consumers. They offer basic programmable options as well as smart capabilities, providing a balance between cost and performance for those with hot water heating systems.
How Can a Smart Thermostat Improve Hot Water Heating?
A smart thermostat can significantly enhance the efficiency and convenience of hot water heating systems.
- Energy Efficiency: Smart thermostats optimize energy usage by learning your heating patterns and adjusting the temperature accordingly. They can minimize energy consumption during periods of inactivity, leading to lower utility bills.
- Remote Control: Many smart thermostats offer mobile apps that allow users to control their heating systems from anywhere. This feature enables you to adjust the temperature while away from home, ensuring hot water is available when needed without unnecessary heating.
- Scheduling Features: These thermostats allow you to set specific heating schedules based on your daily routines. By programming the thermostat to heat water only at certain times, you can avoid heating when it’s not required, enhancing overall efficiency.
- Integration with Home Automation Systems: Smart thermostats can integrate with other smart home devices, enabling a more cohesive home management system. This can include coordinating hot water heating with other energy-consuming appliances for optimized performance.
- Alerts and Maintenance Reminders: Many smart thermostats provide alerts for maintenance, such as when to flush the hot water heater or check for leaks. This proactive approach can prolong the lifespan of your heating system and prevent costly repairs.
What Steps Are Involved in Installing a Thermostat for Hot Water Heat?
The steps involved in installing a thermostat for hot water heat include:
- Choose the Right Thermostat: Selecting a thermostat that is compatible with hot water heating systems is crucial. The best thermostat for hot water heat will feature specific settings to manage water temperature efficiently, ensuring optimal comfort and energy savings.
- Gather Necessary Tools: Before starting the installation, assemble all required tools such as a screwdriver, wire stripper, drill, and a level. Having the right tools on hand will streamline the installation process and help avoid potential delays.
- Turn Off Power Supply: Safety is paramount, so ensure that the power supply to the heating system is turned off at the circuit breaker. This prevents any electrical hazards while working on the thermostat installation.
- Remove the Old Thermostat: Carefully detach the existing thermostat from the wall by unscrewing it and disconnecting the wires. Take note of how the wires are connected to ensure proper installation of the new thermostat.
- Connect the New Thermostat: Follow the manufacturer’s instructions to connect the wires of the new thermostat. Each wire must be connected to the corresponding terminal, which may vary depending on the design of the thermostat.
- Mount the Thermostat: Once the wiring is complete, securely mount the thermostat to the wall using the provided screws and ensure it is level. A properly mounted thermostat will provide accurate readings and efficient operation.
- Turn the Power Back On: After installation, restore power to the heating system at the circuit breaker. This will allow the new thermostat to function and begin regulating the temperature of the hot water heating system.
- Test the Thermostat: Finally, test the new thermostat by adjusting the temperature settings and observing whether the heating system responds appropriately. Confirming its functionality ensures that the installation was successful and that your heating system operates efficiently.
What Common Problems Do Hot Water Thermostats Encounter and How Can They Be Fixed?
Common problems with hot water thermostats include:
- Inaccurate Temperature Readings: This issue can arise from a malfunctioning sensor or improper calibration, leading to insufficient or excessive heating.
- Failure to Activate: A thermostat may not activate the heating system due to electrical issues, such as blown fuses or tripped breakers, preventing hot water from being produced.
- Stuck Relay or Valve: If the relay or valve is stuck in a closed position, hot water cannot circulate through the system, which can result in inadequate heating.
- Corrosion or Damage: Over time, components within the thermostat can corrode or become damaged due to exposure to heat and moisture, requiring replacement or repair.
- Poor Insulation or Placement: If the thermostat is poorly insulated or placed in a location that does not accurately reflect the ambient temperature, it may not function effectively, affecting water temperature control.
Inaccurate temperature readings can lead to discomfort and inefficient heating as the thermostat fails to maintain the desired water temperature. To fix this, check the calibration and replace the sensor if necessary.
Failure to activate the heating system can often be traced back to electrical issues like blown fuses or tripped breakers. Checking the electrical components and resetting the system can resolve this issue.
If the relay or valve is stuck, it may require manual intervention or replacement to ensure that hot water can circulate properly. Regular maintenance can help prevent this problem from occurring.
Corrosion or damage to thermostat components can lead to complete system failure. Regular inspections and timely replacements are essential to ensure longevity and consistent performance.
Poor insulation or improper placement of the thermostat can result in inaccurate readings, causing the heating system to underperform. Relocating the thermostat to a more suitable area and improving its insulation can enhance its efficiency.
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