| Product Family | Gal. | Tank Wty. | Parts Wty. | |
| GT-710 Gas Tankless | | 5 | 5 | Details |
| GT-910 Gas Tankless | | 5 | 5 | Details |
| GT-110 Gas Tankless | | 12 | 5 | Details |
| GT-310 Gas Tankless | | 12 | 5 | Details |
| GT-320 Gas Tankless | | | 5 | Details |
| GT-510 Gas Tankless | | 12 | 5 | Details |
| GT-520 Gas Tankless (Indoor) | | 12 | 5 | Details |
| GT-520 Gas Tankless (Outdoor) | | 12 | 5 | Details |