| BTU Rating (Custom) | : | 144,000 BTU/h |
| BTU Rating | : | 138,670 BTU/h |
| Boiler Connection Size | : | 1 in |
| Capacity | : | 40 gal |
| Depth | : | 23.5 in |
| Domestic Connection Size | : | 3/4 in |
| First Hour Rating | : | 292 gal |
| Heat Exchanger Material | : | Stainless Steel |
| Height | : | 44 in |
| Installation / Mounting Type | : | Floor Mount |
| Maximum Working Pressure | : | 150 PSI |
| Model Number | : | HF |
| Product Family | : | HF Series |
| Product Weight | : | 92 lbs |
| Recovery Rate | : | 256 GPH |
| Shipping Weight | : | 100 lbs |
| Width | : | 23.5 in |
- heat-exchanger-coil-ratings-data-sheet-23614
- heat-flo-hf-40-specification-sheet-25764
- heat-flo-indirect-fired-water-heaters-i-o-manual-23612
- piping-comparison-23615
- submittal-23611
- warranty-23613
- heat-exchanger-coil-ratings-data-sheet-23614
- heat-flo-indirect-fired-water-heaters-i-o-manual-23612
- piping-comparison-23615
- heat-flo-hf-40-specification-sheet-25764
- submittal-23611
- warranty-23613