The following spare parts are available for the model number 520:
Fans & Motors Flue/Venter
| Part name | Also known as |
| 02-25730 - Venter Wheel ES 30 M |
Gas Valves
| Part name | Also known as |
| 03-25250-v1 - Valve connector plug |
Other Heater Components
| Part name | Also known as |
| 36-25212 - Hot Surface Ignitor |