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Rinnai Tankless Water Heaters

119 Products
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Tankless and Tank Product Types

Whole House
Whole House
  • These are your replacement water heaters for a whole house, intended to replace an old tank style heater and offer a house the most efficient water heater method on the market today.
Point-Of-Use
Point Of Use
  • These smaller, nearly portable units are designed to be mounted under a small sink or small shower to provide hot water at the source.
Commercial
Commercial
  • These larger units are designed to provide continuous hot water for restaurants, hotels and large houses.
Water Heater Types
Water Heater Types
  • Mobile Home
  • Residential or Commercial
  • Thermal Storage-Alternative Energy Source
Fuel Type
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Fuel Type

Electric
Electric
  • Requires battery or plug in for power.
solar
Electric
  • Active Solar- External electrical or mechanical equipment (pump).
  • Passive Solar- No external energy source, it relies on solar properties.
Natural Gas vs. Propane
Gas and Propane
  • Natural- One of the cleaner burning fuels available. Most equipment using natural gas as a fuel source is typically maintenance free and is the most common gas type provided in-home.
  • Propane- Heats quickly and efficiently.
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In-Stock
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Shop Products that are in stock and ready to ship. See product page for further shipping information.

On Sale
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Shop Products that are discounted and currently 10%-30% off of manufacturer pricing. Most Products are discounted on a monthly basis and this category will be updated on the 1st of every month.

New Products
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Shop the newest Products on the market. These are the newest Products offered by Build.com.

Made In America
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Shop Products that have been made right here in the U.S.A. Each product has been made using materials solely manufactured in the United States.

Features
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Features

Tankless Water Heater features can make a big difference depending on the installation demands.

Outdoor Vs. Indoor Installation - choose where your unit will be installed.

Hardwired - units are intended for permanent installations where as Plug In units are typically installed under a sink for instant hot water or in for a temporary shower head water heater unit.

Energy Star - rated units have higher effeiciency standards and will operate on less energy.

Electronic Ignition - (No Pilot Light) When water is in high demand such as a business, using a gas tankless water heater is more cost effective but for residential point of use location, using an electric model with an electronic igintion is a great choice.

Plug In -This product will need to be plugged into an outlet. Perfect for smaller homes, cabins or vacation homes.

Water Connection
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Water Connection

This is the required water pipe size for the unit.
Most commonly used sizes are listed first.

Gas Size Required
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Gas Size Required

This is the gas piping size requirement to ensure optimum gas volume to the unit.

Duct Size
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Duct Size

This is the size of the exhaust ducting required for installation.

Minimum Flow Rate
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Minimum Flow Rate

Tankless Water Heaters have a minimum and maximum flow rates requirements.

The minimum flow rate number refers to the required flow rate (measured in gallons per minute) for the tankless water heater unit to operate effectively.

Maximum Flow Rate
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Total BTU's Slider

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Function
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Function

A Non-Condensing tankless water heater will push hot gases through its vent to the outside. They will then cool down outside the unit. These gases have temperatures around 300 degrees F and must be vented through non-corrosive venting materials that can withstand the heat. This special stainless steel category 3 venting can be expensive but necessary for this type of tankless water heater.

Condensing units contain the steam and exhaust in an attempt to reuse more of the heat produced to increase efficiency; also because of this the exhaust from these units are lower in temperature and can be vented with PVC schedule 40 piping. These units boast up to 90% more efficiency rating.

Forced Combustion (Direct Vent) is a controlled system that forces the combustion air supply from the room. Essentially increases the efficiency and is also known as a "dual Chamber" exhaust/Intake system. Always use stainless steel pipe because of the higher exhaust temperatures.

Series
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Series

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Length
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Length

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Width
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Width

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Height
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Height

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Product Application
Product Subtype
  • Rinnai FSEDVWMT04U 8" to 18" Adjustable Wall Thickness Horizontal Concentric Termination for 98 Series Non-Condensing Tankless Water Heaters
    • Pipe Inside Diameter: 4
      $299.92
  • Rinnai 224046 Raised (Snorkel) Horizontal Termination Kit
    • Height: 9.5
    • Pipe Inside Diameter: 5
      $334.27
  • Rinnai 224047PP Raised Horizontal Termination Kit (Snorkel) for Condensing Tankless Water Heaters
    from 1 customers
    • Vent Construction: Double Wall
      $278.67
  • Rinnai 224077PP 45 Degree Vent Pipe Elbow for Condensing Tankless Water Heaters - Set of 2
    • Vent Construction: Double Wall
      $30.67
  • Rinnai 224063 90 Degree Plastic Elbow for LS Series Tankless Water Heater Venting
    from 1 customers
    • Configuration: Elbow
    • Product Weight: 1
    • Csa Approved: Yes
      $31.89
  • Rinnai 224052 19-1/2” Plastic Vent Pipe Extension for Non-Condensing Tankless Water Heaters
    • Configuration: Straight Pipe
    • Product Weight: 5
    • Csa Approved: Yes
    • Length: 19.5
      $35.57
  • Rinnai 104000059 Freeze Protection Solenoid Valve Kit For External Units In Cold Regions
    • Configuration: Accessory
    • Product Weight: 5
      $293.33
  • Rinnai MC-91-2W Remote 98° to 140° Temperature Controller for the Rinnai Tankless Water Heaters
      $65.27
  • Rinnai PCD07-SM Pipe Cover Enclosure For The RC98 / RC80
    • Configuration: Covers
    • Product Weight: 7.5
      $93.87
  • Rinnai 184119 Cold Climate 38" Above Roof Discharge Vertical Termination
    • Configuration: Termination
    • Product Weight: 8
    • Csa Approved: Yes
    • Length: 61.4
      $88.93
  • Rinnai 189951 Polymer Rubber Roof Flashing for 6/12 To 12/12 Pitch
    • Height: 20.4
    • Pipe Inside Diameter: 6
      $54.43
  • Rinnai 224051 10” Plastic Vent Pipe Extension for Non-Condensing Tankless Water Heaters
    from 2 customers
    • Configuration: Straight Pipe
    • Product Weight: 2
    • Csa Approved: Yes
    • Length: 10
      $25.15
  • Rinnai 224069 6" Length Plastic Condensate Collector
    • Diameter: 6
    • Configuration: Condensate Trap
    • Product Weight: 1
    • Csa Approved: Yes
    • Length: 8.25
      $45.00
  • Rinnai FSAAU4SP 4" Plastic Universal Appliance Adapter for 98 Series Non-Condensing Tankless Water Heaters
    • Pipe Inside Diameter: 4
      $19.32
  • Rinnai 184127 18" Above Roof Discharge Metal Termination
    • Pipe Inside Diameter: 4
      $76.67
  • Rinnai 224042 Universal Bug Guard
    • Height: 6.5
      $79.73
  • Rinnai FSUCD4SP 4” Plastic Vertical Condensate Drain for 98 Series Non-Condensing Tankless Water Heaters
    • Diameter: 4
    • Configuration: Condensate Trap
    • Product Weight: 1.5
    • Csa Approved: Yes
    • Length: 6.4
      $77.38
  • Rinnai 224270 39” Metal Vent Pipe Extension for Non-Condensing Tankless Water Heaters
    • Material: Galvanized Steel
    • Configuration: Straight Pipe
    • Product Weight: 7.5
    • Csa Approved: Yes
    • Length: 39
      $48.45
  • Rinnai FSVPK4 Vertical Venting Kit with Variable Pitch Flashing 4” for 98 Series Non-Condensing Tankless Water Heaters
    • Pipe Inside Diameter: 4
      $124.20
  • Rinnai 224250 45 Degree Metal Vent Pipe Elbow - Set of 2
    • Material: Galvanized Steel
    • Configuration: Elbow
    • Product Weight: 3
    • Csa Approved: Yes
      $52.13
  • Rinnai MCC-91-2W Commercial Remote 98° to 160° Temperature Controller for the Rinnai Tankless Water Heaters
    from 1 customers
      $88.00
  • Rinnai REU-EZC-1US EZConnect® Two Tankless Water Heater Connection Cable
    • Configuration: Manifold Controller
    • Product Weight: 1
      $16.13
  • Rinnai RGB-25U-MSAL Universal Moisture Seal Recess Box for Luxury External Units
    • Configuration: Covers
    • Product Weight: 5
      $249.33
  • Rinnai RV65iLP Indoor Liquid Propane 6.6 GPM Tankless Water Heater from the Value Series
    • Free Shipping!
    • $777.33
  • Rinnai FSVL3604SP 4” X 36” Vent Pipe for 98 Series Non-Condensing Tankless Water Heaters
    • Pipe Inside Diameter: 4
      $41.40
  • Rinnai 223184 21” Universal Non-Condensing Plastic Horizontal Termination
    • Configuration: Termination
    • Csa Approved: Yes
    • Length: 21
      $42.32
  • Rinnai 224245 6" Length Metal Condensate Collector
    • Material: Galvanized Steel
    • Configuration: Condensate Trap
    • Product Weight: 2
    • Csa Approved: Yes
      $56.47
  • Rinnai FSWMKBS4-M Horizontal Venting Kit W/Birdscreen Termination for 98 Series Non-Condensing Tankless Water Heaters
    • Pipe Inside Diameter: 4
      $203.63
  • Rinnai 224054 2-1/4" to 12" Telescoping Vent Length for Non-Condensing Tankless Water Heaters
    • Configuration: Straight Pipe
    • Product Weight: 3
    • Csa Approved: Yes
    • Length: 13.1
      $36.80
  • Rinnai 146141 Roof Flashing Assembly For Flat Roof
    • Pipe Inside Diameter: 5.5
      $24.53
  • Rinnai 223188 12” Universal Termination Metal Kit for LS Series
    • Pipe Inside Diameter: 4
      $83.41
  • Rinnai 242141 Flashing For Metal Roof
    • Height: 12.6
      $83.41
  • Rinnai 223183 11-1/2” Universal Non-Condensing Plastic Horizontal Termination
    from 1 customers
    • Configuration: Termination
    • Csa Approved: Yes
    • Length: 11.5
      $45.47
  • Rinnai FSELB9004SP 4" Diameter 90° Elbow for 98 Series Non-Condensing Tankless Water Heaters
    • Pipe Inside Diameter: 4
      $26.77
  • Rinnai 189952 Polymer Rubber Roof Flashing for 8/12 To 16/12 Pitch
    • Height: 20.5
    • Pipe Inside Diameter: 7
      $52.07
  • Rinnai 109000144 Replacement Door for RC98i Tankless Water Heater
      $69.57
  • Rinnai PCD07-SM-BP Bottom Plate For PCD07-SM Pipe Cover for Rinnai Tankless Water Heaters
    • Outdoor Approved: Yes
    • Number Of Pieces: 1
    • Material: Metal
    • Configuration: Covers
    • Product Weight: 2
      $26.40
  • Rinnai RGB-32-W Recess Box For Models: R98LSe/R98LSeASME
    • Configuration: Covers
    • Asme Approved: Yes
      $266.20
  • Rinnai 224265 19-1/2” Metal Vent Pipe Extension for Non-Condensing Tankless Water Heaters
    • Material: Galvanized Steel
    • Configuration: Straight Pipe
    • Product Weight: 4
    • Csa Approved: Yes
    • Length: 19.5
      $42.32
  • Rinnai FSVL2404SP 4” X 24” Vent Pipe for 98 Series Non-Condensing Tankless Water Heaters
    • Pipe Inside Diameter: 4
      $32.19
  • Rinnai 224255 90 Degree Metal Elbow for LS Series Tankless Water Heater Venting
    • Material: Galvanized Steel
    • Configuration: Elbow
    • Product Weight: 2
    • Csa Approved: Yes
      $36.19
  • Rinnai 224045 Wall Thimble for Indoor Tankless Water Heaters
    from 1 customers
    • Height: 18.26
    • Pipe Inside Diameter: 5
      $42.53
  • Rinnai FSELB4504SP 4" Diameter 45° Elbow for 98 Series Non-Condensing Tankless Water Heaters
    • Pipe Inside Diameter: 4
      $22.36
  • Rinnai FSBS4SP 4" Bird Screen Assembly for Horizontal Terminations on 98 Series Non-Condensing Tankless Water Heaters
    • Pipe Inside Diameter: 4
      $27.13
  • Rinnai FSCL4 4" Support Clamp for 98 Series Non-Condensing Tankless Water Heaters - Set of 6
    • Pipe Inside Diameter: 4
      $108.53
  • Rinnai FSFS4SP 4" Firestop/Flat Flashing for 98 Series Non-Condensing Tankless Water Heaters
    • Height: 15
    • Pipe Inside Diameter: 4
      $28.60
  • Rinnai FSWT4SP 4" External Termination Wall Thimble for 98 Series Non-Condensing Tankless Water Heaters
    • Duct Size: 4" Round
    • Configuration: Wall Thimble
    • Product Weight: 5
    • Length: 10
      $86.53
  • Rinnai E75C 75000 BTU Tankless Condensing Gas Boiler with 2.1 Gallons Per Minute
    • E Collection
    • Direct Vent: Yes
    • Height: 26
    • Maximum Gas Input: 75000
    • Depth: 16
    • Product Weight: 86
    • Maximum Flow Rate: 2.1
      $3,046.91

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