| AFUE | : | 92.0 % |
| Air Flow Direction | : | Multi-Position |
| BTU Heating Input | : | 70,000 Btu/hr |
| BTU Heating Output | : | 67,000 Btu/hr |
| CFM Airflow | : | 1,300 cfm |
| Communicating | : | No |
| Depth | : | 29.63 in |
| Energy Star Certified | : | Yes |
| Fuel Type | : | Natural Gas~LP Gas |
| Height | : | 34.00 in |
| Ignition Type | : | Direct Spark |
| MBH | : | 70 MBH |
| Model Number | : | R921T |
| Motor Type | : | Constant Torque ECM |
| Number of Stages | : | Single |
| Phase | : | 1 ph |
| Product Family | : | Endeavor Line Classic |
| Product Weight | : | 133.5 lb |
| Vent Type | : | Non-Direct Vent (Category I) |
| Voltage Rating | : | 115 V |
| Width | : | 17.50 in |
The R921T Endeavor Line Classic Series furnace is a reliable and efficient solution for residential heating needs. It combines single-stage operation with a constant torque ECM motor to deliver consistent comfort and achieve a 92% AFUE rating.Designed for versatility, this unit can be installed in upflow, downflow, or horizontal configurations, making it adaptable to a variety of applications and job site constraints.
- PlusOne® Diagnostics: Features an industry-first, 7-segment LED display for quick and straightforward service calls.
- Reliable Ignition: Utilizes a proven Direct Spark Ignition (DSI) system for consistent startup and long-lasting performance.
- Water Management System: Includes a patented blocked drain sensor that shuts the furnace off and provides a diagnostic code to prevent water damage.
- Durable Heat Exchangers: Built with an aluminized steel primary heat exchanger and a 29-4c stainless steel secondary heat exchanger for long service life.
- Flexible Installation: Designed for 4-way multi-position installation (upflow, downflow, and horizontal) to accommodate various applications.
- Energy Efficiency: Offers 92% AFUE and is ENERGY STAR certified, helping to reduce utility costs.
