Worcester Bosch
Worcester Bosch Air Vent 8716122078
Air vent for Worcester Bosch Greenstar 2000 Combi and 4000 System boilers.
At a glance
- Appliance family: Greenstar 2000 Combi and Greenstar 4000 System
- Also known as 2248820
£5.38
£4.48 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The AIR VENT is a Worcester Bosch automatic air vent supplied under part number 8716122078. It is fitted to Greenstar 2000 Combi and Greenstar 4000 System boiler ranges, where it releases trapped air from the system water circuit. The vent allows air to escape automatically during filling, commissioning and normal running, helping to prevent airlocks and circulation noise.
Signs this part needs replacing
- Water weeping or dripping from the vent body
- Continual damp staining or scale trails around the vent
- Persistent air noise or gurgling in the boiler that does not clear after venting
- System pressure that will not hold or repeatedly needs topping up
- Corrosion or debris visible at the vent outlet
Before you order
- Confirm the boiler model and GC number against the fit list above
- Check the existing vent for the same body type and connection before removal
- Isolate the appliance and drain or depressurise the relevant circuit before fitting
- Verify the part number 8716122078 against the label on the existing component
Compliance
| Alternative numbers | 2248820 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 25 C LPG | 47-800-35 | 47-800-35 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 25 C NG | 47-800-34 | 47-800-34 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 30 C LPG | 47-800-37 | 47-800-37 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 30 C NG | 47-800-36 | 47-800-36 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 12 S LPG | 41-800-08 | 41-800-08 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 12 S NG | 41-800-07 | 41-800-07 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 15 S LPG | 41-800-10 | 41-800-10 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 15 S NG | 41-800-09 | 41-800-09 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 18 S LPG | 41-800-12 | 41-800-12 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 18 S NG | 41-800-11 | 41-800-11 | — | — |
Showing 10 of 28 compatible appliances.
Documents & drawings
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