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Rinnai RL94iN

Interior, 9.4 GPM, Natural Gas, 199,000 BTU, 83% Efficiency Tankless Water Heater

(2 Reviews)

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Experience a never-ending supply of fresh hot water, and a sleek, sculpted water heater design.  Whether you are building a spacious new home or remodeling your older home, Rinnai LS units can be used individually, in pairs, or in banks of three or more to supply all your hot water needs.

LS Series interior-mount units can be placed in any room, vent directly to the outside and have an integrated condensate collector.  LS Series exterior-mount units require no additional venting and can even be installed in a recessed enclosure, then painted or textured to match the exterior of your home for a clean, inconspicuous appearance.  All LS units contain a commercial-grade heat exchanger for optimum durability.  Homeowners get the reliability of commercial-grade construction and an industry-leading 12-year limited warranty.


  • Sleek, modern design with silver finish and sculpted cover
  • Significant space savings over tank-style water heaters
  • Long-lasting design and reduced risk of flooding
  • Included isolation valves to insure professional and serviceable installations 
  • Applicable for both residential and commercial applications due to commercial-grade heat exchanger
  • Temperature range with standard MC-91 controller (included): 98°F to 140°F
  • Temperature range with MCC-91 commercial controller: 98°F to185°F
  • Digital temperature control, monitoring, and troubleshooting
  • EZConnect™ feature for connecting 2 or more units; 3 or more units can be manifolded using our MSA control board
  • Meets California and Texas NOx emission rules
  • ENERGY STAR® qualified 
  • Residential Warranty: 12-year heat exchanger / 5-year parts/1-year labor
  • Commercial Warranty: 5-year heat exchanger & parts / 1-year labor


PVC Vent capable

If yes, the unit can be vented either with concentric vent or with two PVC pipes, one for intake and one for exhaust

PVC Vent capable
Installation Placement

Equipment can be placed inside or outside of the home.

Installation Placement
Maximum Input BTU

The maximum amount of heat that the unit can produce. The amount delivered into the space will be the input minus the efficiency loss also know as the output. For example a 100000 btu furnace at 80% efficiency will give you 80000 out btus of heat. The same size furnace at 95% will give you 95000 btus of heat.

Maximum Input BTU
199000 BTU
Minimum Input BTU

The amount of heat produced by the unit at the lower stage of heat. Having two stages of heat will allow for more consistent operation and greater comfort in the home.

Minimum Input BTU
9900 BTU
Gallons Per Minute
9.4 GPM
Hot Water Capacity Range

The gallons per minute of hot water that the unit is rated to provide. The actual amount of hot water generated can vary depending on your ground water temperature.

Hot Water Capacity Range
0.4 - 9.4 GPM
Thermal Efficiency

The percentage of the heat generated by combustion that goes into heating. The remaining percentage goes out the flue. The higher the efficiency rating, the lower the cost of operation.

Thermal Efficiency
83 %
Power Source
120 VAC (60Hz)
Fuel Type
Natural Gas
Ignition Type
Direct Ignition
Connection Type
NPT (Threaded)
Energy Factor
Temperature Range

The minimum and maximum temperatures on the thermostat.

Temperature Range
185 - 98 °F
ENERGY STAR® Qualified

Products earn the ENERGY STAR label by meeting the energy efficiency requirements set forth in ENERGY STAR specifications. The EPA establishes these specifications based on the following set of principles:

  • Product categories must contribute significant energy savings nationwide.
  • Qualified products must deliver the features and performance demanded by consumers, in addition to increased energy efficiency.
  • If the qualified product costs more than a conventional, less-efficient counterpart, purchasers will recover their investment in increased energy efficiency through utility bill savings, within a reasonable period of time.
  • Energy efficiency can be achieved through broadly available, non-proprietary technologies offered by multiple manufacturers.
  • Product energy consumption and performance can be measured and verified with testing.
  • Labeling would effectively differentiate products and be visible for purchasers.

ENERGY STAR® Qualified
Piping Connections - Water
3/4 Inch(es)
Exhaust Venting
Product Weight
53 lbs
Meets CSA Standards

Canadian Standards Association

Meets CSA Standards
14 Inches
9 3/5 Inches
22 9/10 Inches
Heat Exchanger Warranty
12 Years
Parts Warranty
5 Year
Labor Warranty
1 Years


*Any accessories purchased with the Rinnai RL94iN, are eligible for free shipping.
Rinnai 224049

Metal Pass Through Plate

$24.99 Qty:
Rinnai / Ubbink 146141

Roof Flash Assembly - Flat Roof

$22.99 Qty:
Rinnai / Ubbink 169044

Concentric Venting Pipe Clamp

$4.99 Qty:
Rinnai / Ubbink 184118-S

Roof Discharge Terminal, 18" Above Roof, 21" Length Below Roof

$61.99 Qty:
Rinnai / Ubbink 184119

Roof Discharge Terminal, 38" Above Roof for Cold Climate

$87.99 Qty:
Rinnai / Ubbink 189950

Roof Flashing Assembly - 1/12 to 6/12 Pitch (5-25 Degrees)

$40.99 Qty:
Rinnai / Ubbink 189951

Roof Flashing Assembly - 6/12 to 12/12 Pitch (25-45 Degrees)

$43.99 Qty:
Rinnai / Ubbink 189952

Roof Flashing Assembly - 8/12 to 16/12 Pitch (35-55 Degrees)

$42.99 Qty:
Rinnai / Ubbink 222053 / 222050

Condensate Trap

$31.99 Qty:
Rinnai / Ubbink 223181

11.5" Universal Non-Condensing Termination Kit

$71.99 Qty:
Rinnai / Ubbink 223182

21" Universal Non-Condensing Termination Kit

$71.99 Qty:
Rinnai / Ubbink 224042

Bug Guard For Rinnai Water Heaters (except the R98i series)

$74.99 Qty:
Rinnai / Ubbink 224045

Thimble (For New Construction)

$35.99 Qty:
Rinnai / Ubbink 224046

Raised Horizontal Termination Kit ("Snorkel")

$319.99 Qty:
Rinnai / Ubbink 224050

(2-Pack) 45° Vent Pipe Elbows

$40.99 Qty:
Rinnai / Ubbink 224051

10" Vent Pipe Extension

$23.99 Qty:
Rinnai / Ubbink 224052

19.5" Vent Pipe Extension

$36.99 Qty:
Rinnai / Ubbink 224053

39" Vent Pipe Extension

$44.99 Qty:
Rinnai / Ubbink 224063

90° Vent Pipe Elbow

$29.99 Qty:
Rinnai / Ubbink 224069

Condensate Collector, 6" Length

$35.99 Qty:
Rinnai / Ubbink 710342

Rubber Wall Plate - White

$4.99 Qty:
Rinnai / Ubbink 710602

Rubber Wall Plate - Black

$4.99 Qty:
Rinnai BC-100V-1S

Deluxe Bathroom Control for Rinnai Tankless Water Heaters - Silver

$135.99 Qty:
Rinnai BC-100V-1W

Deluxe Bathroom Control for Rinnai Tankless Water Heaters - White

$99.99 Qty:
Rinnai MC-100V-1S

Deluxe Control for Rinnai Tankless Water Heaters, Silver

$88.99 Qty:
Rinnai MC-100V-1W

Deluxe Control for Rinnai Tankless Water Heaters - White

$88.99 Qty:
Rinnai MC-91-2S

Standard Control for Rinnai Tankless Water Heaters - Silver

$61.99 Qty:
Rinnai MC-91-2W

Standard Control for Rinnai Tankless Water Heaters - White

$61.99 Qty:
Rinnai PCD03-SM2

Pipe Cover Enclosure

$105.99 Qty:
Rinnai RWM101

Control-R Wifi Module for Rinnai Tankless Water Heaters

$86.00 Qty:
Honeywell AMX300TLF

Thermostatic Mixing Valve Kit with 8" Flex Connector - Lead Free

$129.99 Qty:



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