The following spare parts are available for the model number HB45/AR 50':
Connectors
| Part name | Also known as |
| 7531 - 100mm (4") Flexible Coupler 444mm Long | |
| 7532 - 150mm (6") Flexible Coupler 444mm Long | |
| 7541 - 100mm (4") Jubilee Clips | |
| 7542 - 150mm (6") Jubilee Clips |
Dampers
| Part name | Also known as |
| DPHB38/4-UK - Damper Assembly To Suit 100mm Heater Tube |
Fans & Motors Flue/Venter
| Part name | Also known as |
| FHBTO-4 - Type O Fan Assembly 100mm (4") Inlet | |
| FHBTO-6 - Type O Fan Assembly 150mm (6") Inlet |
Other Heater Components
| Part name | Also known as |
| 2635 - Damper Gasket HB |