SUBURBAN 521338 Water Heater Demand Control Board Camper Rv ST-42

( Brand: Suburban ), ( Part Type: Control Heater Board ), ( Manufacturer Part Number: 521338 )

Review SUBURBAN Water Heater On demand Control Board Camper Rv

The Suburban 521338 ST-42 On-Demand Water Heater Control Board is a crucial component for ensuring optimal performance of your on-demand water heating system in your camper RV. This advanced control board is designed specifically for Suburban's 4-gallon on-demand propane water heaters, model number 521338.

The ST-42 Control Board features an on-demand operation, which means it only heats water when you need it, resulting in significant energy savings compared to traditional tank-style water heaters. It comes with an adjustable thermostat, allowing you to set the water temperature to your preference.

One of the outstanding features of this control board is its direct spark ignition system. This system ensures a reliable light-off and consistent performance, even in extreme temperatures and under various altitude conditions. The control board also includes a safety thermostat and a thermal cut-off switch to prevent overheating and potential damage to the water heater.

The ST-42 Control Board is designed with user-friendly functionality. It comes with an LED display that shows temperature settings and error codes for easy troubleshooting. The control board is also compatible with Suburban's optional remote control (sold separately), allowing you to adjust the temperature and monitor the system from a distance.

The control board's compact design makes it easy to install and fits perfectly with Suburban's 521338 on-demand water heater. It is constructed with high-quality materials to ensure durability and long-lasting performance. The board is also compatible with both 12V and 24V electrical systems, depending on your RV's power setup.

In summary, the Suburban 521338 ST-42 On-Demand Water Heater Control Board is an essential upgrade for your camper RV's on-demand water heating system. With its reliable performance, energy savings, user-friendly features, and easy installation, this control board is the ideal choice for RVers who value efficiency, convenience, and peace of mind.

Pros and Cons of Buying a Suburban 521338 Water Heater with ST-42 On-Demand Control Board for a Camper RV

The Suburban 521338 water heater is a popular choice for RV owners due to its efficiency and compact design. The ST-42 on-demand control board is an additional feature that offers greater control over the water heating system. In this analysis, we will discuss the pros and cons of purchasing this water heater model with the ST-42 on-demand control board for your camper RV.

1. Energy Efficiency: The on-demand water heating technology heats water only when it's needed, reducing energy consumption and saving fuel.

2. Space Savings: Since water is heated on demand, the water heater does not require a storage tank, resulting in significant space savings.

3. Temperature Control: The ST-42 on-demand control board allows users to set custom temperature preferences, ensuring a comfortable shower experience.

4. Durability: Suburban water heaters are known for their robust design and long lifespan, making them a reliable investment for RV owners.

5. Easy Installation: The on-demand water heating system is relatively simple to install, and the digital control board makes setup and configuration a breeze.

1. Initial Cost: The Suburban 521338 water heater with the ST-42 on-demand control board may have a higher upfront cost compared to traditional water heaters with storage tanks.

2. Complexity: The on-demand water heating system and digital control board may be more complex than traditional water heating systems, requiring more maintenance and potential for technical issues.

3. Limited Capacity: Due to the lack of a storage tank, the system may not be able to provide hot water for extended periods, such as for multiple showers in a row or lengthy dishwashing sessions.

4. Compatibility: Ensure the ST-42 on-demand control board is compatible with your specific RV model and electrical system before making a purchase.

The Suburban 521338 water heater with the ST-42 on-demand control board offers several advantages, including energy efficiency, temperature control, and space savings. However, it also comes with some drawbacks, such as a higher upfront cost, potential complexity, and limited capacity. Ultimately, if you prioritize energy savings, custom temperature control, and space efficiency, this water heater system may be worth the investment for your camper RV.

If you're an RV owner looking for a compact, energy-efficient water heating solution with temperature control capabilities, the Suburban 521338 water heater with the ST-42 on-demand control board is a strong contender. We recommend carefully considering your specific RV model, electrical system, and water usage habits before making a purchase. Consulting with a professional RV technician or supplier can also help ensure a successful installation and long-term satisfaction with the product.

Details:

This control board is specifically designed for Suburban water heaters and comes with a manufacturer part number to ensure compatibility quality. Although it does not come with a warranty, this product is essential for maintaining and repairing your RVs water heating system. The Suburban Water Heater ST-42 On-Demand Control Board 521338 is a crucial component for camper and RV owners who require hot water on demand.

part #: 521338 prices

• $43.95-$119.95

specifications rvroutine:

• brand: Suburban
• part type: Control Heater Board
• manufacturer part number: 521338

returns rvroutine:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

seller rvroutine:

• # reviews: 1089
• city: Traverse City, Michigan
• rating: 99.6%

payments rvroutine:

• wallet: Google-pay
• credit card: Discover
• other

offer rvroutine:

• quantity: 1
• availability: In Stock
• sold: 0
• options: Ship-to-home
• started: March 17, 2026

shipping rvroutine:

• class: Standard
• cost: $0.00
• type: Fixed
• service: USPS Ground Advantage
• carrier: USPS
• transit: 3-8 Days

general rvroutine:

• Parts Accessories > RV, Trailer Camper Parts Accessories > Other RV, Trailer Camper Parts Accessories
• condition: New other see details

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