| Outlet Temperature Sensor (Premium) | $12.50 |
| Water Flow Sensor (Premium, copper) | $26.78 |
| Blower Switch (Premium) | $18.50 |
| LED Display (Premium) | $22.50 |
| Control Box (Premium) | $56.95 |
| Fan Motor (Premium) | $28.50 |
| AQUAH Premium Heat Exchanger B (JSG28-K) | $85.00 |
| Output Temperature Sensor (Premium) | $9.95 |
| 1 M Stainless Steel Direct Vent Pipe Extension | $71.75 |