What Does a Rinnai Propane Heater Look Like on the Inside?

A Rinnai propane heater, specifically the EX38DTWP model, is a wall-mounted, indoor heating solution designed for large rooms. It boasts advanced features and a sleek design, delivering consistent warmth and comfort throughout your home. The heater’s dimensions are 12.6″D x 36.63″W x 26.4″H, weighing approximately 108 pounds, and is powered by propane gas.

Stainless Steel Burners and Warm Air Outlet

The EX38DTWP model is equipped with stainless steel burners and a warm air outlet, ensuring even heat distribution. The stainless steel burners are designed to provide efficient and reliable combustion, while the warm air outlet is strategically positioned to circulate the heated air throughout the room.

Electronic Spark Ignition and 7-Stage Modulating Gas Valve

what does a rannai propane heater look like on inside

This Rinnai propane heater features electronic spark ignition, which eliminates the need for a pilot light. The 7-stage modulating gas valve allows for precise temperature control within a range of 60-80°F, ensuring your desired level of comfort is maintained.

Electronic Thermostat and Self-Diagnostic Electronics

The heater also includes an electronic thermostat, which provides accurate temperature monitoring and adjustment. Additionally, the self-diagnostic electronics system continuously monitors the heater’s performance, alerting you to any potential issues and ensuring safe and efficient operation.

Cool-to-the-Touch Cabinet

One of the standout features of the Rinnai EX38DTWP propane heater is its cool-to-the-touch cabinet. This design element not only enhances the overall aesthetic but also provides an added layer of safety, preventing accidental burns or injuries.

Quiet Operation

Despite its powerful heating capabilities, the Rinnai propane heater operates quietly, making it an ideal choice for bedrooms, home offices, or study rooms where noise levels are a concern.

Dimensions and Weight

The Rinnai EX38DTWP propane heater measures 12.6 inches in depth, 36.63 inches in width, and 26.4 inches in height. It weighs approximately 108 pounds, ensuring a sturdy and durable construction.

Power Source and Installation

When installing a Rinnai propane heater, it is recommended to seek professional assistance for optimal performance. Rinnai suggests using a dedicated electrical circuit with a 120VAC, 60 Hz, 10 amp power source for the heater.

Heat Coverage and Efficiency

This Rinnai propane heater is designed for indoor use and is best suited for large rooms, providing heat coverage for up to 1600 square feet. Its energy-efficient design and advanced features make it a reliable and cost-effective heating solution for your home.

Rinnai PRO Locator

Rinnai offers a “Find a Rinnai PRO” page on their website to help homeowners locate qualified technicians in their area. This ensures that the installation and maintenance of your Rinnai propane heater are handled by experienced professionals, maximizing its performance and longevity.


In summary, the Rinnai EX38DTWP propane heater is a feature-rich and efficient heating solution for large indoor spaces. Its stainless steel burners, electronic spark ignition, and 7-stage modulating gas valve provide precise temperature control and even heat distribution. The cool-to-the-touch cabinet, quiet operation, and self-diagnostic electronics further enhance the user experience and safety. With its sleek design and reliable performance, the Rinnai propane heater is an excellent choice for homeowners seeking a high-quality and energy-efficient heating solution.

Rinnai Residential Direct Vent Furnaces
Rinnai EX38DTWP Furnace on Amazon
Rinnai EX17CT, EX22CT Installation and Operation Manual