1. Water Heaters New/Used Products
  2. sku: 4118096490902771
  3. RINNAI RGB-20-U

RINNAI RGB-20-U Water Heater 766156004469 RRGB20U

Rgb-20-u Rinnai - Rrgb20u Large White

( Brand: Rinnai ), ( Manufacturer Part Number: RGB-20-U ), ( Part Type: Water Heater ), ( Color: White ), ( UPC: 766156004469 )

Review RINNAI Large White

The Rinnai RGB-20-U RRB20U is a high-performance tankless water heater designed for both residential and commercial applications. This innovative model from Rinnai, a leading manufacturer in continuous flow water heating technology, is engineered to provide an endless supply of hot water on demand.

The RGB-20-U RRB20U features a compact and sleek design, making it easy to install in various locations. With its dimensions of 20 inches by 13.5 inches by 26 inches, this tankless water heater can fit in even the most space-constrained areas. The model's copper heat exchanger ensures superior thermal efficiency and durability, while its electronic ignition system guarantees reliable and efficient performance.

This Rinnai water heater is capable of delivering a maximum flow rate of 4.0 gallons per minute (GPM) at a 35 F temperature rise. It can supply hot water for applications such as kitchen and bathroom sinks, showers, and washing machines simultaneously. The unit's condensing technology makes it an energy-efficient choice, as it recovers up to 96% of the heat that is extracted from the natural gas being consumed.

The RGB-20-U RRB20U is equipped with Rinnai's advanced recirculation system, which can save water and energy by reducing the amount of time spent waiting for hot water to reach the tap. This system allows users to set a minimum temperature and automatically circulates the water when the temperature drops below that level.

Safety is a top priority for Rinnai, and the RGB-20-U RRB20U comes with several safety features. These include an overheat protective mechanism, a condensate safety valve, and a draft diverter to ensure proper combustion. Additionally, the unit's digital control panel allows users to easily monitor and adjust temperature settings, diagnose potential issues, and schedule maintenance reminders.

The Rinnai RGB-20-U RRB20U comes with a 12-year limited warranty on the heat exchanger and a 5-year limited warranty on all other parts. This commitment to quality and reliability makes it an excellent investment for those seeking a high-performance and energy-efficient water heating solution.

The Rinnai RGB-20-U (RRGB20U) is a condensing tankless water heater designed for both residential and commercial applications. This model is known for its energy efficiency, continuous hot water supply, and compact size. Here are some pros and cons to help you make an informed decision about purchasing the Rinnai RGB-20-U:

Pros:

1. Energy Efficiency: The RGB-20-U is Energy Star certified, meaning it meets or exceeds the energy efficiency requirements set by the U.S. Environmental Protection Agency. It also features a condensing design, which allows it to extract more heat from the same amount of fuel, resulting in lower energy bills.

2. Continuous Hot Water Supply: This tankless water heater provides an endless supply of hot water, ensuring that you never run out of hot water, even during peak usage times.

3. Compact Size: The RGB-20-U is compact in size, making it an excellent choice for homes with limited space or for installations where a traditional tank water heater may not be practical.

4. Flexible Installation: The RGB-20-U can be vented with either PVC or stainless steel venting, providing more flexibility for installation.

5. Durable Construction: Rinnai is known for its high-quality products, and the RGB-20-U is no exception. It features a durable copper heat exchanger and a stainless steel condensing heat exchanger, ensuring long-lasting performance.

Cons:

1. Initial Cost: Tankless water heaters, in general, have a higher upfront cost compared to traditional tank water heaters. The RGB-20-U is no exception.

2. Complex Installation: While the RGB-20-U is compact in size, its installation process can be more complex than that of a traditional tank water heater, as it requires proper venting and electrical connections.

3. Condensing Technology: The RGB-20-U's condensing technology can lead to increased maintenance needs, as it requires regular cleaning of the heat exchanger to maintain optimal performance.

In conclusion, the Rinnai RGB-20-U offers several advantages, including energy efficiency, continuous hot water supply, and compact size. However, it also comes with some disadvantages, such as a higher initial cost, complex installation, and increased maintenance needs due to its condensing technology.

If you're looking for a high-efficiency, tankless water heater with an endless supply of hot water, the RGB-20-U is an excellent choice. However, if you're on a tight budget or prefer a simpler installation process, a traditional tank water heater may be a better fit for your needs. Ultimately, the decision depends on your specific requirements and priorities.

Recommendation:

If you're in the market for a high-efficiency, tankless water heater, the Rinnai RGB-20-U is an excellent choice. Its energy efficiency, continuous hot water supply, and compact size make it a worthwhile investment, despite its higher upfront cost and complex installation process. However, if you're on a tight budget or prefer a simpler installation process, you may want to consider a traditional tank water heater instead.

Details:

Rest assured that you're getting a good deal when purchasing with us. Compatible with Rinnai model's: V53EN,V53EP. No questions asked. For recessed installation of thankless water heater.

Features Thankless water heater accessory. Rinnai - RGB-20-U RRGB20U, Large, White.

part #: rgb20 prices

  • $167.00-$369.00

specifications wateheat:

  • brand: Rinnai
  • mpn: Rgb-20-u
  • part type: Water Heater
  • color: White
  • upc: 766156004469

payments wateheat:

  • credit card: Diners-club
  • wallet: Google-pay
  • other

seller wateheat:

  • city: Atlanta, Georgia
  • rating: 97.9%
  • # reviews: 3190

shipping wateheat:

  • type: Calculated
  • service: UPS Ground Saver, FedEx Ground or FedEx Home Delivery, UPS 2nd Day Air
  • class: Economy, Standard, Expedited
  • transit: 6-12 Days
  • carrier: UPS, FedEx
  • cost: $62.60

returns wateheat:

  • policy: Returns Accepted
  • paid by: Buyer
  • method: Money back
  • time: 14 Days

general wateheat:

  • condition: Open box
  • Heating, Cooling Air > Water Heaters > Water Heater Parts

offer wateheat:

  • quantity: 1
  • availability: In Stock
  • sold: 0
  • options: Ship-to-home
  • started: June 19, 2025
  • best offers: True
part type: water heater,
category: home & garden > heating, cooling air > water heaters > water heater parts, color: white, sku: 4118096490902771,

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3 offers $167.00–$369.00 USD
  • Offer #1: $279.00 price + $12.99 shipping estimate = $291.99* total. The model features a sleek design and reliable performance, making it a convenient and efficient choice for home heating and cooling needs. The Rinnai -U Universal Recess Box is a versatile product designed for easy installation of Rinnai water heaters.+$12.99 shipping
  • Offer #2: $369.00 price + $0.00 shipping estimate = $369.00* total. Universal recess box for select Rinnai outdoor tankless water heaters.FREE SHIPPING
  • Offer #3: $167.00 price + $0.00 shipping estimate = $167.00* total. Retrofit Friendly: Ideal for updating or repairing existing recess box installations. Compatible with Rinnai U recess box systems and V53De series tankless water heaters.FREE SHIPPING

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