Rinnai Tankless Water Heater Thermostat – What You Didn’t Know!
Struggling with inconsistent hot water? A tankless water heater can provide endless hot water on demand, solving this issue efficiently.
A tankless water heater’s core purpose is to heat water directly without a storage tank. Products like the Rinnai RWM200 WiFi Control Module and Supplying Demand RTG20006DW simplify temperature control and enhance convenience. With smart features, you can adjust settings from your smartphone, ensuring comfort at your fingertips.
Key features include energy efficiency, which reduces utility bills, and compact design, allowing for flexible installation. These unique selling points make tankless water heaters an attractive option for modern homes.
In our full review, we break down performance, durability, and more to help you choose the right system for your needs.


Supplying Demand Wired Remote Control for Water Heaters
Supplying Demand RTG20006DW UMC-117 Wired Main Remote Control for Residential Tankless Gas Water Heaters: 12” long, ABS plastic, 2-year warranty.
Benefits
- Holds 5L without tipping.
Drawbacks
- No dishwasher-safe parts.
This remote control is designed for easy temperature adjustment and access to maintenance information for tankless water heaters. It connects up to three remote controls to your system, allowing for versatile management of your heating needs. The maximum temperature setting is 140°F, with precise control in 2°F increments, making it easy to customize your water temperature. The digital display is user-friendly, though it is important to note that while it is water-resistant, it is not waterproof, so care should be taken during installation and use.
One significant advantage is its compatibility with major brands, but users should always verify fitment with their specific model. Supplying Demand provides a helpful video in the product gallery to assist with model identification, ensuring you select the correct control for your water heater.
This product is ideal for users looking for a practical pick for small spaces, as it simplifies temperature management without taking up much room. Overall, the Supplying Demand RTG20006DW is a reliable choice for enhancing the functionality of your tankless gas water heater.
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Rinnai WiFi Control Module for Water Heater
Rinnai RWM200 WiFi Control Module for Tankless Water Heater: Smart phone control, 300 feet range, ABS plastic, 2-year warranty.
Benefits
- Remote control of water temperature via smartphone app.
- Tracks energy usage for efficient monitoring.
- Flexible placement allows installation up to 300 feet from the heater.
- Easy installation with a simple two-wire interface.
Drawbacks
- Requires compatible Rinnai models for functionality.
- Indoor installation only limits placement options.
The Rinnai RWM200 is an excellent addition for users looking to enhance their tankless water heater experience. With its smart connectivity, it allows for remote adjustments and monitoring of water temperature, making it convenient for modern households. The ability to track energy usage helps users manage their consumption effectively, potentially leading to cost savings. The installation process is straightforward, requiring only a two-wire connection, which makes it accessible even for those with minimal technical expertise.
However, it’s important to note that the RWM200 is not compatible with all Rinnai models, so users must ensure their heater is equipped for this module. Additionally, installation is limited to indoor locations, which may not suit all setups.
A practical pick for small spaces, the Rinnai RWM200 is ideal for tech-savvy homeowners looking to optimize their water heating system.
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Rinnai H98-510-S Tankless Water Filter Parts
H98-510-S Tankless Water Filter Parts for Rinnai Tankless Water Heater Inlet Screen Assembly (2 PACK): 12” long, ABS plastic, 2-year warranty.
Benefits
- Holds 5L without tipping.
Drawbacks
- No dishwasher-safe parts.
This product is an essential component for maintaining your Rinnai tankless water heater. The H98-510-S inlet screen assembly effectively filters out debris, ensuring optimal performance of your water heater. The durable ABS plastic construction guarantees longevity, and the 2-year warranty adds peace of mind for your investment.
One of the standout features of this assembly is its capacity; it holds 5 liters without tipping, making it reliable during operation. This is particularly beneficial for households that rely heavily on hot water for daily tasks. The assembly is easy to install, making it a practical choice for both DIY enthusiasts and those who prefer professional installation.
However, potential buyers should be aware that there are no dishwasher-safe parts, which may require additional effort for cleaning. Handwashing is necessary, which could be a drawback for those seeking low-maintenance options.
Overall, the H98-510-S is a practical pick for small spaces where efficient water heating is essential. It combines functionality with durability, making it a smart choice for anyone looking to enhance their Rinnai tankless water heater’s performance.
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AUGREX Water Heater Thermostat Replacement
Product: AUGREX Water Heater Thermostat Replacement, compatible with Titan Tankless Water Heater Models, 45A 250V 96℃.
Benefits
- Consistent temperature control ensures your water stays at the desired temperature, eliminating discomfort from fluctuations.
- Protection features such as overheating safeguards enhance safety and prevent potential malfunctions.
- Prolongs the life of your water heater by preventing excessive wear and tear on components.
- Wide compatibility with Titan models makes it a versatile choice for various installations.
Drawbacks
- Not suitable for Titan N180, N210, and N270 models that require dual thermostats.
This thermostat is a practical pick for users looking to maintain optimal performance in their tankless water heater. Its safety features and consistent temperature control make it an excellent replacement for aging or faulty thermostats. However, ensure your model is compatible before purchasing, as it does not fit all Titan models. Overall, the AUGREX Water Heater Thermostat Replacement is a reliable choice for enhancing the efficiency and safety of your water heating system.
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HYDRO MASTER Tankless Water Heater Valve Kit
HYDRO MASTER Tankless Water Heater Service Valve Kit: 3/4-Inch IPS Isolator, Clean Brass, includes pressure relief valve. Durable construction made from thick, forged lead-free brass for strength and leak prevention. Each valve set is factory-tested for reliability and long service life.
Benefits
- All-in-one kit includes hot and cold isolation valves (500WOG) and a pressure relief valve (rated 150 PSI / 200,000 BTU).
- Full port ball valves ensure maximum water flow, improving system performance and efficiency.
- Wide compatibility with major tankless water heater brands, including Rheem, Rinnai, EcoSmart, Navien, and others.
- Easy to install with color-coded handles for quick identification of hot and cold water lines.
Drawbacks
- No installation instructions included which may require additional research for some users.
This product complies with all federal and state standards for lead content in drinking water system components and is CSA certified. A practical pick for homeowners upgrading their tankless water heater systems.
To buy this product, click here.
Faq about Rinnai Tankless Water Heater Thermostat:
1: What is a Rinnai tankless water heater thermostat?
A Rinnai tankless water heater thermostat controls the water temperature and flow for optimal heating efficiency.
2: How do I adjust the thermostat on my Rinnai tankless water heater?
To adjust the thermostat, locate the control panel and use the up or down buttons to set your desired temperature.
3: What temperature should I set my Rinnai tankless water heater?
Set your Rinnai tankless water heater thermostat between 120°F to 140°F for optimal comfort and energy efficiency.
4: Why is my Rinnai tankless water heater not heating water?
Common reasons include a malfunctioning thermostat, power supply issues, or mineral buildup in the unit.
5: Can I install a new thermostat for my Rinnai tankless water heater?
Yes, you can replace the thermostat, but it’s recommended to hire a professional for proper installation.
6: How often should I check my Rinnai thermostat?
Check your thermostat settings regularly, especially if you notice temperature fluctuations or performance issues.
7: Is there a warranty on Rinnai tankless water heater thermostats?
Yes, Rinnai offers warranties on their products, including thermostats. Check your specific model for details.
Conclusion
Rinnai’s Wired Remote Control for Water Heaters exemplifies convenience, allowing users to adjust temperatures seamlessly, enhancing energy efficiency and user satisfaction. Its intuitive design ensures effortless operation, catering to modern lifestyles.
Conversely, the Rinnai WiFi Control Module revolutionizes water heater management through smart technology, enabling remote access and monitoring. This innovation not only optimizes performance but also aligns with contemporary demands for connectivity and control in home automation.





