| Models: | 400 DF | 1000 DF |
| BTU/H Rating | 400,000 | 1,000,000 |
| Fuel Type | Dual Fuel – LP/NG | Dual Fuel – LP/NG |
| Ignition Type | Spark | Spark |
| Fuel Consumption LP Gas Min/Max (lbs./hr) | 18.56 | 46.3 |
| Fuel Consumption Natural Gas Min/Max (cu.ft/hr) | 400 | 1,000 |
| Blower Fan Output (CFM) | 2,500 | 5,000 |
| Inlet Gas Pressure LP Min/Max (in w.c) | 7″/13.5″ | 7″/13.5″ |
| Inlet Gas Pressure NG Min/Max (in w.c) | 7″/13.5″ | 7″/13.5″ |
| Amps (Starting/Continuous Operation) | 27.2/7.1 | 23.2/8.4 |
| Electric Supply (Volts/Hz/Phase) | 120/60/1 | 120/60/1 |
| Motor Horsepower | 1/2 HP | 1 HP |
| Length (in) | 50 | 65 |
| Width (in) | 21.25 | 30 |
| Height (in) | 22.5 | 31 |
| Unit Weight (lbs) | 125.0 | 300.0 |
| Built-In Volt Meter | Yes | Yes |
| Built-In Thermostat | Yes | Yes |
| Vent Mode | Yes | Yes |
| Ductable | No | No |
| Omni Certified US/Canada | Omni certified to CSA standards for U.S. and Canada | Omni certified to CSA standards for U.S. and Canada |