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Rinnai 36" 38,400 BTU Energy Saver Direct Vent Gas Wall Furnace

Rinnai 36" 38,400 BTU Energy Saver Direct Vent Gas Wall Furnace

Regular price $3,326.00
Regular price Sale price $3,326.00
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This direct-vent wall furnace is 38,400 BTUs and is a great source of heat for large rooms in most of the country. Direct Vent furnaces can be installed almost anywhere along an outside wall. The EX38CT offers several venting installation options. A built-in, programmable thermostat is located on top of the unit of the EX38CT. It has 2 timer settings and can be connected to a WiFi-enabled thermostat giving you more flexibility in your comfort control when you are away from home or just in a different room! And, don't worry if there is a power failure while your system is on, the appliance will shut off the gas and once power is restored, this unit will re-start automatically.

The Energy Saver Direct Vent Wall Furnaces feature modulating technology to optimize the efficiency of the unit. It offers just the right amount of heat at any given moment by constantly monitoring the room temperature and detecting temperature fluctuations. Room temperature is monitored 2" from the floor and detects temperature changes of less than 1°F. If a door opens and a sudden gush of cold air rushes into the room, the furnace automatically adjusts the fan speed and BTUs to restore the room back to its set temperature quickly.

The 6.3 pint, enamel-coated, built-in humidifier tray is located on the bottom front of the unit for easy access. As warm air passes over the water in the tray it is humidified. This helps make the warm air you are breathing a little less dry!

It is recommended that you allow for 40 inches of clearance in front of the unit and 10 inches from the top and sides to allow for easy maintenance and service access.

Certified for installation in Manufactured (Mobile) Homes. The EX38CT includes the FOT-151 Termination Kit. This kit is for use with walls that is between 4-1/2" - 9-1/2" thick. If you have thicker walls, extensions are available (typically field provided by the installer) for this unit. 


  • Up to 83% AFUE efficiency
  • Comfortable, consistent heating, with no large fluctuations in room temperature
  • Sealed combustion minimizes indoor heat loss and ensures the safety
  • Zero clearance from the 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


Manufacturer Trade Model Number EX38CTN,EX38CTP,EX38CTWN,EX38CTWP
Product Depth 12.6 in / (320 mm)
Product Height 26.4 in / (670 mm)
Product Width 36.63 in / (930 mm)
Product Weight 88 lb / (40 kg)
Gas Type Natural Gas/Propane
AFUE Rating 80%
Color Beige & White
Max BTU Input 38,400 BTU (11.3 kW) / 36,500 BTU (10.7 kW)
Min BTU Input 13,200 BTU / (3.9 kW)
Maximum Electrical Consumption 72-117W
Fan CFM Output (High) 360.6
Fan CFM Output (Low) 203.4
Venting Material Stainless Steel


To connect with a Rinnai-trained installer, you can utilize the Rinnai Dealer Locator by visiting the link: Alternatively, you can directly reach out to Rinnai's dedicated customer support team via the Toll-Free Number: 1 (800) 621-9419.

Documents & Files


10 yrs on Heat Exchanger
5 Year Warranty on Parts

2 Year Labor Warranty


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  • Researched and ordered my fireplace from US FIreplace Store. Pricing was a fair value however, the customer service was EXCELLENT! I had an issue with the direct vent venting. I called US Fireplace and the correct items were sent out the next day AND Janessa stayed on top of my return authorization and sent me the permissions and documents I needed to return the incorrect item and no cost to me, including return shipping. Overall, I am a very satisfied customer and my fireplace looks and operates flawlessly. I am glad that I selected US FIreplace to source my direct vent fireplace. Thank you for the great service.


    Monteagle, TN

  • I had placed an order, through Lowe's Home Improvement, for an Electric Firebox: Revillusion RBF42. Ordered 1st part of January. Was told I would have it in 3 weeks. When checking to see is it came in, was told it was delayed to 3/15. Was then told is was delayed until 4/25. Waited until 4/27 to check on it. Was then told it was now delayed until August. This firebox was going in a new Sun Room addition. I could not get my final inspection until the Firebox was installed. I went on line and googled for this same product. US Fireplace Store web site was given to me. This was on a Saturday. I call and reached a very nice man. Explain what I was look for. He checked and told me they had 30 of them in stock. I almost fell out of my chair. I clarified with him the product I was wanting. I ask how soon could I get it. He told me it would ship today. Again, was amazed. It arrived on the following Monday. What a pleasure and a relief working with US Fireplace Store and their employees. Exceed my expectations.

    Thomas W.

    Fort Mill, SC

  • Great prices, quick delivery and fast hassle free services on the issue I encountered. I had purchased an electric fireplace unit that would not fit into the existing fireplace space. With one email I was able to get the wrong fireplace refunded and picked up at my home at no extra cost and the new one I purchased and delivered free of charge. Great company.

    John P.

    Denvers, MA

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