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Rinnai EX38CWP

36,500 BTU Direct Vent, 82% Efficiency, Liquid Propane, White Wall Furnace

(7 Reviews)


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    • Pro Installation

Rinnai's innovative, fully modulating, direct-vent wall furnaces deliver smart, energy-efficient warm air to those hard-to-heat areas such as room additions, guest suites, basements, and garages, as well as mobile homes and high altitude applications.  The 7-stage modulating gas valve allows Rinnai wall furnaces to adjust to a room's heating needs, providing comfortable consistent heat.  These units are designed to accurately monitor room temperature only 2" off the floor, and are capable of detecting temperature changes as little has half of a degree.  Installation couldn't be easier with Rinnai's wall furnaces only requiring a 3" wall terminal hole for flue venting, and a selection of custom vent kits to fit nearly any application.

Standard Features

  • Up to 83% AFUE efficiency
  • Comfortable, consistent heating, with no large fluctuations in room temperature
  • Sealed combustion minimizes indoor heat loss and ensures safety
  • Zero clearance from intake air
  • Dependable, low-maintenance performance
  • Simple, flexible installation with minimal space requirements
  • "Cool-to-the-touch" cabinet
  • Child safety lock
  • Electronic ignition - no pilot light
  • Wind tunnel tested venting system
  • Digital, adaptive control
  • On-board self-diagnostics for easier maintenance
  • Earthquake-proof tilt switch
  • Mobile home approved
  • Includes 4 1/2" - 9 1/2" vent kit


Heating Capacity

The amount of heat, rated in BTUs that the item can produce.

Heating Capacity
36500 BTU
Effective Heating Capacity (BTUs)
Air Flow

The amount of air, rated in cubic feet per minute, that the unit can move.

Air Flow
162.7 CFM
Efficiency (% AFUE)

The percentage of energy converted into output by the unit. The remaining percentage is lost during the conversion process. The higher the efficiency, the lower the operational cost.

Efficiency (% AFUE)
82 %
Electrical Connection
Ignition Type
Direct Spark
Equipment Type
Wall Furnace
Exhaust Venting
Noise Level

The noise produced by the unit rated in decibels. 30dbs is equivalent to a whisper, 60dbs is equivalent to a normal conversation, 90 dbs is equivalent to a lawn mower.

Noise Level
37 - 47 Decibels
Product Weight
90 lbs
Meets CSA Standards

Canadian Standards Association

Meets CSA Standards
36 5/8 Inches
13 Inches
26 3/8 Inches
120 Volts
Heat Exchanger Warranty
10 Years