Specification
| Make | ICE | ICE | Safe-Heat |
| Model | IDF 500 LP/NG | OHV 500 LP/NG | ID-500-PN |
| Fuel Consumption | 20.1 gal./hr. | 21.8 gal./hr. | 20.1 gal./hr. |
| Heating Area | 9,700 sq. ft.* | 10,400 sq. ft.* | 9,700 sq. ft.* |
| Max Airflow | 3,100 CFM | 3,100 CFM | 3,100 CFM |
| Max BTU | 420,000 | 450,000 | 420,000 |
| Overall Dimensions | 70"L x 35"W x 52"H | 70"L x 35"W x 52"H | 70"L x 11"W x 52"H |
| Return Duct (Dia/Max Length) | NA | NA | NA |
| Run Time | 5 hrs.** | 4.6 hrs.** | 5 hrs.** |
| Supply Duct (Dia/Max Length) | 2 x 12" / 24' | 2 x 12" / 24' | 2 x 12" / 24' |
| Voltage | 115V | 115V | 120V |
| Weight | 580 lbs | 400 lbs | 400 lbs |
