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RINNAI CHS398100HCXAIN Hybrid Water Heating Ultra Nox 766156017933 000-BTU 68

Chs398100hcxain Rinnai 398 000 Btu 68 Inch Hybrid Water Heating System H-series Ultra Low Nox

( Brand: Rinnai ), ( Manufacturer Part Number: CHS398100HCXAIN ), ( Power Source: Corded Electric ), ( California Prop 65 Warning: Yes ), ( Type: Hybrid Water Heater ), ( Voltage: 120 V ), ( Item Height: 68.00 In ), ( Btu/h Heating Rating: 398, 000 Btus ), ( Features: Asme Certified Tank, Vertical Redundancy, Ultra-high Efficiency, Ultra Low Nox, Dual Engine Redundancy ), ( Mounting Location: Indoor ), ( Country Of Origin: United States ), ( Item Width: 41.00 In ), ( UPC: 766156017933 )

Review RINNAI 398 Btu 68 Inch Hybrid Water Heating System H series Ultra Low Nox

The Rinnai CHS398100HxCN 398 Series Ultra NOX is a high-performance, condensing tankless water heater designed for both indoor and outdoor installation. This model is part of Rinnai's H-Series, which is known for its advanced technology, energy efficiency, and reliability.

The CHS398100HxCN is capable of delivering a continuous hot water flow rate of 6.6 gallons per minute (GPM) at a temperature rise of 35 degrees Fahrenheit. This makes it an excellent choice for larger households with multiple bathrooms or high hot water demand applications.

One of the most notable features of this tankless water heater is its hybrid technology. This means that it can use both natural gas and electricity to operate. During low demand periods, the unit can operate on electricity alone, which can save energy and reduce gas consumption. However, during peak demand periods, the unit can switch to natural gas for faster heating and greater efficiency.

This model also features Rinnai's proprietary Ultra NOX technology, which is designed to minimize nitrogen oxide (NOx) emissions. This makes it an environmentally-friendly option for homes that require a lot of hot water.

The CHS398100HxCN is equipped with a user-friendly digital control panel that allows users to easily adjust the temperature and set the recirculation system. It also comes with a remote control for added convenience.

This tankless water heater is constructed with a durable copper heat exchanger and a stainless steel condensing heat exchanger, which ensures long-lasting performance and excellent heat transfer efficiency. The unit is also equipped with a self-diagnostic system that can detect and troubleshoot any issues, reducing the need for costly repairs.

The CHS398100HxCN is designed to be installed on the exterior wall of a home, making it an excellent choice for those looking to free up valuable interior space. It is also designed to be easy to install, with a compact size and flexible venting options.

Overall, the Rinnai CHS398100HxCN 398 Series Ultra NOX is a high-performance, energy-efficient, and environmentally-friendly tankless water heater that is perfect for larger households with high hot water demand. Its hybrid technology, Ultra NOX emissions reduction, and user-friendly digital control panel make it a top choice for those looking for a reliable and advanced tankless water heating solution.

The Rinnai CHS398100HxCN 398 series Ultra NOX is a condensing tankless water heater that offers several advantages and disadvantages for homeowners. Let's explore these pros and cons in detail.

Pros:

1. Endless Hot Water: Tankless water heaters provide hot water on demand, eliminating the need for a storage tank. This means you'll never run out of hot water, even during peak usage periods.

2. Energy Efficiency: Condensing tankless water heaters, like the Rinnai CHS398100HxCN, are highly energy efficient. They extract heat from the exhaust gases, reducing energy waste and lowering your utility bills.

3. Compact Size: The Rinnai CHS398100HxCN's tankless design allows it to take up significantly less space than traditional tank water heaters. This makes it an excellent choice for homes with limited space.

4. Long Lifespan: Tankless water heaters have a longer lifespan compared to storage tank water heaters. The Rinnai CHS398100HxCN comes with a 12-year heat exchanger warranty and a 5-year parts warranty.

5. Reduced Risk of Leaks: Since there is no storage tank, there's a lower risk of leaks and water damage.

Cons:

1. Higher Upfront Cost: Tankless water heaters, especially high-end models like the Rinnai CHS398100HxCN, have a higher upfront cost compared to traditional tank water heaters.

2. Installation Complexity: Installing a tankless water heater requires professional help and additional components, such as a recirculation system or a power venting system, which can add to the overall cost.

3. Potential for Cold Water Sandwich: If you use hot water in one area and then another area uses cold water, you may experience a brief period of cold water in between. This is known as the "cold water sandwich" phenomenon.

4. Maintenance: While tankless water heaters require less maintenance than traditional tank water heaters, they still need routine cleaning and descaling to ensure optimal performance.

In conclusion, the Rinnai CHS398100HxCN 398 series Ultra NOX tankless water heater offers several advantages, including endless hot water, energy efficiency, compact size, long lifespan, and reduced risk of leaks. However, it also comes with some disadvantages, such as a higher upfront cost, installation complexity, potential for cold water sandwich, and maintenance requirements.

If you have the budget and are looking for a high-performance, energy-efficient water heating solution for your home, the Rinnai CHS398100HxCN could be an excellent choice. However, if you're on a tight budget or prefer a simpler and more affordable water heating solution, a traditional tank water heater might be a better option for you. Ultimately, the decision depends on your specific needs, budget, and preferences.

Details:

No Damages: Products must be free from any damages, scratches, or defects. Product Features:: ASME Certified Tank: Engineered to meet stringent commercial building code and pressure vessel requirements. Extended Service Life: Hybrid design minimizes thermal stress, increasing durability and reliability. Please avoid using USPS.

Dual Engine Redundancy: Two integrated thankless engines provide consistent hot water even during peak demand. Packaging Integrity: Ensure there are no writings or labels on the original manufacturer packaging. Installation Warning, This water heater must be installed by a licensed and qualified technician

Always ensure that the technician adheres to safety protocols, including proper venting, gas line connections, and electrical work. This 398,000 btu Natural Gas system combines a 119-gallon ASME-certified storage tank with dual high-efficiency thankless engines to deliver superior performance, redundancy, and energy savings. Ultra-High Efficiency: 0.98 UEF significantly reduces energy consumption and operating costs. Designed for demanding commercial applications such as hospitals, multifamily buildings, hotels, and large facilities, this system provides built-in redundancy to help eliminate no hot water events while achieving an ultra-high 0.98 Uniform Energy Factor UEF.

In many regions, a licensed contractor is required to install this unit. Product Summary.: Rinnai 398K btu 68 Natural Gas H-Series Hybrid Water Heating System ASME Ultra Low NOx CHS398100HCXAiN: The Demand Duo CHS-HCX2A model Series is a high-performance commercial hybrid water heating system engineered for facilities requiring ASME-certified pressure vessels. Its hybrid design reduces thermal stress on the tank, significantly extending service life compared to traditional high-efficiency commercial storage tanks. Ultra Low NOx: Meets strict emissions requirements for environmentally sensitive regions.

Original Packaging: Return the item in its original manufacturer packaging, including all manuals, accessories, and packaging materials. Uninstalled: Items must not have been installed or used.

part #: chs398100hcxain price

  • $19425.00

specifications wateheat:

  • brand: Rinnai
  • mpn: Chs398100hcxain
  • power source: Corded Electric
  • california prop 65 warning: Yes
  • type: Hybrid Water Heater
  • voltage: 120 V
  • item height: 68.00 In
  • btu/h heating rating: 398, 000 Btus
  • features: Asme Certified Tank, Vertical Redundancy, Ultra-high Efficiency, Ultra Low Nox, Dual Engine Redundancy
  • mounting location: Indoor
  • country of origin: United States
  • item width: 41.00 In
  • upc: 766156017933

shipping wateheat:

  • class: Freight
  • cost: $0.00
  • service: Flat Rate Freight
  • type: Fixed

returns wateheat:

  • paid by: Buyer
  • policy: Returns Accepted
  • time: 30 Days
  • method: Money back

general wateheat:

  • condition: New
  • Heating, Cooling Air > Water Heaters > Tankless Water Heaters

offer wateheat:

  • quantity: 2
  • started: March 17, 2026
  • sold: 0
  • availability: In Stock
  • best offers: True
  • options: Ship-to-home

seller wateheat:

  • rating: 99.6%
  • city: Multiple Warehouse Locations
  • # reviews: 8986

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power source: corded electric, california prop 65 warning: yes, type: hybrid water heater, voltage: 120 v, item height: 68.00 in, btu/h heating rating: 398, 000 btus, features: asme certified tank, vertical redundancy, ultra-high efficiency, ultra low nox, dual engine redundancy, mounting location: indoor, country of origin: united states, item width: 41.00 in,
category: home & garden > heating, cooling air > water heaters > tankless water heaters, sku: 7465312285062722,

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1 offer $19425.00 USD
  • Offer #1: $19425.00 price + $0.00 shipping estimate = $19425.00* total. Gas Type Natural Gas BTU Max 398,000 BTU.FREE SHIPPING

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