| AFUE Rating % | : | 96 |
| Ampacity | : | 10.3 |
| BTUH | : | 40000 |
| Blower (Dia x W) (In) | : | 11 x 8 |
| Blower Drive | : | Direct |
| Blower FLA | : | 6.4 |
| Blower Fan Motor HP | : | 1/2 |
| Blower Fan Power | : | 120 V/1 Phase/60 Hz |
| Blower Fan RPM | : | 1075 |
| Burner Type | : | Multi-port Inshot |
| Combustion Fan Drive | : | Direct |
| Combustion Fan FLA | : | 2.14 |
| Combustion Fan Power | : | 120 V/1 Phase/60 Hz |
| Combustion Fan Speeds | : | 1 |
| Combustion Fan Type | : | Centrifugal |
| Combustion Fan-RPM | : | 3300 |
| Condensing | : | Condensing |
| Configuration | : | Downflow |
| Crated Dimensions (H X W X D) | : | 35-1/2 x 19-1/2 x 30-7/8 in |
| Drill Size LP Gas (Qty - Drill Size) | : | 2 - 56 |
| Drill Size Nat Gas (Qty - Drill Size) | : | 2 - 45 |
| Energy Star Compliant | : | Yes |
| Filter Furnished | : | No |
| Filter Hi Vel. (No.-Size-Thk.) | : | 1 - 16 x 25 - 1 |
| Filter Type Recommended | : | High Velocity |
| Gas Valve Type | : | Redundant - 1-Stage |
| Heat Exchanger Gauge (Fired) | : | 20 |
| Heat Exchanger Type - Fired | : | 409 Stainless Steel |
| Heat Exchanger Type - Unfired | : | 29-4C Stainless Steel |
| Heating Capacity | : | 38900 BTUH (1st Stage) |
| Line Size - Suction (In) | : | 1/2 |
| MOCP | : | 15 |
| Model Number | : | A951 |
| Motor Type | : | CTM |
| Nominal Input BTUH | : | 40000 |
| Number of Blower Speed | : | 9 |
| Number of Blower Wheels Used | : | 1 |
| Number of Burners | : | 2 |
| Output BTUH | : | 38900 |
| Pilot Safety Device | : | SiNi Igniter |
| Power Supply | : | 120 V/1 Phase/60 Hz |
| Return Air Temp. (Min. - Max.) deg F | : | 45 - 80 |
| Series | : | A951X |
| Stages | : | 1 |
| Temperature Rise (Min-Max) deg F | : | 30 to 60 |
| Tonnage | : | 3.0 Ton |
| Uncrated Dimensions (HxWxD) | : | 34 x 17-1/2 x 28-3/4 in |
| Vent Size | : | 2 in Round |