Wall Furnaces
Rinnai EnergySaver® Direct Vent Wall Furnaces deliver efficient, ductless heat with sealed combustion and flexible through-wall venting. Ideal for whole-room and zone heating where running ductwork isn’t practical, the D-Series modulates output to maintain even, quiet comfort. Install along an exterior wall and vent straight out with the matching kit. Models available in Natural Gas or Propane.
Why EnergySaver?
- Sealed, direct-vent combustion protects indoor air and simplifies placement on exterior walls.
- Modulating heat & variable-speed fan reduce swings and cold spots.
- Quick, flexible installation with horizontal or vertical vent options and low-profile terminations.
How to choose
- Size by room heat loss: match BTU/h to space and climate. Small rooms often fit EX08, medium EX22, larger/cold-climate spaces EX38 (see chart).
- Fuel & altitude: select NG or LP; verify altitude limits in the spec sheet. EX38 is listed to 10,200 ft.
- Controls: use a compatible wall thermostat or Wi-Fi thermostat interface (model-dependent).
| Model | Fuel | BTU Range (Min–Max) | Mount / Vent | Dimensions (W×H×D) | Notes |
|---|---|---|---|---|---|
| EX08DT (NG/LP) | NG or LP | 3,000–8,000 BTU/h | Surface-mounted, direct vent | 18.3″ × 27.4″ × 10.1″ | Compact zone heater; thermostat compatible. |
| EX11DT (NG/LP) | NG or LP | NG: 5,500–11,000 • LP: 5,700–11,000 BTU/h | Surface-mounted, direct vent | 18.3″ × 27.4″ × 10.1″ | Small/medium rooms; same cabinet as EX08. |
| EX17DT (NG/LP) | NG or LP | 8,200–16,700 BTU/h | Surface-mounted, direct vent | 29.9″ × 22.9″ × 10.1″ | Great mid-size step-up from EX11. |
| EX22DT (NG/LP) | NG or LP | NG: 8,200–21,500 • LP: 8,200–20,700 BTU/h | Surface-mounted, direct vent | 29.9″ × 22.9″ × 10.1″ | Most popular size; thermostat/Wi-Fi interface ready. |
| EX38DT (NG/LP) | NG or LP | NG: 13,200–38,400 • LP: 13,200–36,500 BTU/h | Surface-mounted, direct vent | 36.6″ × 26.4″ × 13″ | Largest output; approved to 10,200 ft. |
Specs vary by fuel and revision; always verify against the current Rinnai spec sheet for your exact model.
The “A” vent kit is included with the EX Series appliance
A Vent Kit No. FOT-151. Fits Walls 4 1/2 - 9 1/2 in (115 - 240 mm)
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