1. Water Heaters New/Used Products
  2. sku: 5998983100022752
  3. RINNAI U245-200-A

RINNAI U245-200-A Manifold Tankless Water Heater TWMAR3-LPG RL851-RL531

Rl851-rl531 Rinnai U245-200-a Twmar3-lpg Manifold Tankless Water Heater New

( Brand: Rinnai ), ( Manufacturer Part Number: U245-200-A ), ( Model: TWMAR3-LPG ), ( Type: Lpg Manifold ), ( Power Source: Gas ), ( Color: Silver ), ( Items Included: Just The Part In Pics ), ( Voltage: 120 V )

Review RINNAI Manifold Tankless Water Heater New

Introducing the Rinnai U245-200-A Twmar3 LPG Manifold Tankless Water Heater RL851-RL531, an exceptional addition to your home's water heating system. This innovative model from Rinnai, a leading manufacturer of continuous flow water heaters, is designed to provide an endless supply of hot water on demand.

The U245-200-A model is a natural gas version, while the Twmar3 signifies it is a manifold tankless water heater. It comes with an LPG conversion kit, making it a flexible option for those using propane as their fuel source. The manifold design allows for multiple units to be installed in parallel, increasing the capacity and efficiency of your water heating system.

This Rinnai water heater boasts a powerful 199,000 BTU input rating, capable of delivering up to 6.6 gallons per minute of hot water flow rate. It is Energy Star certified, ensuring excellent energy efficiency and savings on utility bills.

The RL851-RL531 model features Rinnai's Condensing Technology, which extracts more heat from the combustion process, reducing the amount of fuel needed to heat water. Additionally, it comes with a Digital Control Module, providing precise temperature control and advanced diagnostic capabilities.

The U245-200-A Twmar3 model is designed with a compact size, making it ideal for both residential and commercial applications. It also includes a built-in recirculation system, ensuring that hot water is delivered quickly to the point of use.

The Rinnai U245-200-A Twmar3 LPG Manifold Tankless Water Heater RL851-RL531 is backed by a comprehensive warranty, including a 12-year heat exchanger warranty and a 5-year parts warranty. This model also includes a condensate neutralization system, making it suitable for installation in areas with acidic water.

In summary, the Rinnai U245-200-A Twmar3 LPG Manifold Tankless Water Heater RL851-RL531 is a powerful, energy-efficient, and versatile water heating solution for your home or business. With its advanced features, reliable performance, and excellent warranty coverage, you can enjoy an endless supply of hot water with peace of mind.

Rinnai U245-200-A Twmar3-LPG Manifold Tankless Water Heater RL851-RL531: Pros, Cons, and Conclusion

The Rinnai U245-200-A Twmar3-LPG Manifold Tankless Water Heater RL851-RL531 is a popular choice among LPG (Liquefied Petroleum Gas) users for continuous hot water supply. Let's discuss its key features, advantages, and disadvantages.

Features:

1. Condensing technology: This water heater features condensing technology, which allows it to extract more heat from the same fuel source than traditional tankless models.

2. Compact design: The Rinnai U245-200-A has a compact design, making it suitable for spaces with limited room.

3. Direct venting: It can be directly vented, allowing for installation in areas without access to a chimney or vent pipe.

Pros:

1. Energy efficiency: The condensing technology results in higher energy efficiency, which can save you money on energy bills.

2. Continuous hot water supply: Tankless water heaters like the Rinnai U245-200-A provide hot water on demand, ensuring that you always have an endless supply of hot water.

3. Space-saving design: The compact design of the Rinnai U245-200-A makes it an ideal choice for smaller spaces.

Cons:

1. Higher upfront cost: Tankless water heaters, especially those with advanced features like condensing technology, typically have a higher upfront cost than traditional tank water heaters.

2. Maintenance requirements: Tankless water heaters require regular maintenance to ensure optimal performance and longevity.

3. Potential venting complications: Direct venting can be more complicated to install than traditional venting methods, potentially adding to the installation cost.

Conclusion:

The Rinnai U245-200-A Twmar3-LPG Manifold Tankless Water Heater RL851-RL531 offers several advantages, including energy efficiency, continuous hot water supply, and a compact design. However, its higher upfront cost, maintenance requirements, and potential venting complications should be considered before making a purchase. Ultimately, if you have the budget and are looking for a high-performance, space-saving water heating solution, the Rinnai U245-200-A is a worthwhile investment.

Details:

The TWMAR3-LPG Manifold U245-200-A is a new gas-powered water heater part from Rinnai, designed specifically for LPG tankless heaters like the RL851 and RL531 model's. See pics for a better. It is a crucial component for efficiently connecting and powering your water heater system, ensuring reliable consistent hot supply in home. This silver-colored manifold operates at 120V and includes only the part shown in pictures.

part #: u245200 prices

  • $68.00-$83.11

specifications wateheat:

  • brand: Rinnai
  • mpn: U245-200-a
  • model: Twmar3-lpg
  • type: Lpg Manifold
  • power source: Gas
  • color: Silver
  • items included: Just The Part In Pics
  • voltage: 120 V

offer wateheat:

  • sold: 0
  • best offers: True
  • availability: In Stock
  • started: November 20, 2025
  • options: Ship-to-home
  • quantity: 1

returns wateheat:

  • policy: No Returns

payments wateheat:

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

shipping wateheat:

  • class: Expedited
  • type: Calculated
  • cost: $0.00
  • service: USPS Priority Mail
  • carrier: USPS
  • transit: 5-12 Days

general wateheat:

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

seller wateheat:

  • city: Tuscola, Texas
  • rating: 100.0%
  • # reviews: 1103
type: lpg manifold, power source: gas, items included: just the part in pics, voltage: 120 v,
category: home & garden > heating, cooling air > water heaters > water heater parts, color: silver, sku: 5998983100022752,

Rinnai U245-200 Is Similar To:

wateheat logo
5 offers $68.00–$83.11 USD
  • Offer #1: $83.11 price + $0.00 shipping estimate = $83.11* total. Rinnai -B-AS Screw (812) All Heaters. Rinnai -B-AS.FREE SHIPPING
  • Offer #2: $68.00 price + $0.00 shipping estimate = $68.00* total. See pics for a better description The -LPG Manifold -A is a new gas-powered water heater part from Rinnai, designed specifically for LPG tankless water heaters like the RL851 and RL531 models.FREE SHIPPING
  • Offer #3: $69.00 price + $33.30 shipping estimate = $102.30* total.+$33.30 shipping
  • Offer #4: $79.95 price + $0.00 shipping estimate = $79.95* total. MANIFOLD ASSEMBLY. NATURAL GAS TANKLESS WATER HEATER.FREE SHIPPING
  • Offer #5: $89.95 price + $0.00 shipping estimate = $89.95* total. Rinnai # -A-AS - Manifold.FREE SHIPPING

Copyright © wateheat.com