| AFUE | : | 92 % |
| Air Flow Direction | : | Upflow~Downflow~Horizontal~Multi-Position |
| BTU Heating Input Rating (Custom) | : | 84,000 BTU/h |
| BTU Heating Input | : | 84,000 BTU/h |
| BTU Heating Output Rating (Custom) | : | 84,000 BTU/h |
| BTU Heating Output | : | 79,800 BTU/h |
| CFM Airflow (Custom) | : | 1,974 CFM |
| CFM Airflow | : | 2,000 CFM |
| Communicating | : | No |
| Depth | : | 29.63 in |
| Energy Star Certified | : | Yes |
| Fuel Type | : | Natural Gas~Liquid Propane |
| Height | : | 34 in |
| Ignition Type | : | Direct Spark |
| MBH | : | 84 MBH |
| Model Number | : | R921T |
| Motor Type | : | Constant Torque ECM |
| Number of Stages | : | Single-Stage |
| Phase | : | 1 ph |
| Product Family | : | Endeavor Line Classic |
| Product Weight | : | 150 lbs |
| Vent Type | : | Direct Vent~Concentric |
| Voltage Rating | : | 115 V |
| Width | : | 21 in |
The Rheem® Endeavor Line Classic R921T is a single-stage gas furnace designed for reliable and efficient home heating. Achieving a 92% AFUE rating, this ENERGY STAR certified unit features a constant torque ECM motor to provide consistent airflow and dependable comfort.Built for versatile installations, this furnace can be configured for upflow, downflow, or horizontal applications. Its compact 21-inch cabinet makes it a suitable choice for both new construction and retrofit projects where space may be limited.
- PlusOne® Diagnostics: Features an industry-first, 7-segment LED display for quick and straightforward service diagnostics.
- PlusOne® Ignition System: Utilizes a proven Direct Spark Ignition (DSI) system for reliable startup and long-lasting operation.
- PlusOne® Water Management: Includes a patented blocked drain sensor that automatically shuts off the furnace to prevent water damage and alerts technicians with a diagnostic code.
- Durable Construction: Built with an aluminized steel primary heat exchanger and a 29-4C stainless steel secondary heat exchanger for longevity.
- Comprehensive Warranty: Covered by a 10-year conditional parts warranty and a limited lifetime heat exchanger warranty for peace of mind.
