Baxi Diverter Valve Replacement Part

The Baxi diverter valve 7224344 is a direct replacement part for Baxi Combi 80E, 105E and 105HE boilers, designed to switch water flow smoothly between central heating and hot water. Ideal for fixing heating or hot water issues caused by a sticking or faulty diverter, this replacement helps restore reliable performance and efficient boiler operation.

Compatibility:

• Combi: 105E, 105HE, 80 Eco, 80 Maxflue, 80E
• Combi (Main): 24, 24 HE, 30HE
• Performa (Potterton): 24, 24 Eco HE, 28, 30 HE

Important fitting advice

We recommend that all parts are fitted by a fully qualified Gas Safe registered engineer. If you need help confirming the right part, contact us our team has 10+ years of boiler spares knowledge and friendly chat support to help you quickly.

Delivery

At Boiler Spares Hub, we dispatch orders within 1 working day (Monday–Friday). Orders placed outside working days will be dispatched on the next working day. For delivery options available for this product, please add it to your basket or check our delivery options page.

Returns

We accept 30-day returns. Returns must be in an unopened, sealed box. If we find the item has been used or installation was attempted, we may refuse the return.

Frequently Asked Questions(FAQ’s)

1. What is Baxi 7224344?
Baxi 7224344 is a hydraulic outlet assembly / diverter valve assembly kit used to control and route water flow in compatible combi boilers.

2. What does it do in the boiler?
It helps the boiler switch water flow between central heating (radiators) and hot water (taps) for correct CH/DHW changeover.

3. What is the most common Baxi boiler error?
The most common Baxi boiler errors often relate to low water pressure (E119/E118), circulation issues (E125), ignition/flame loss (E133, E128), or fan/flue problems (E160), with low pressure being a frequent issue due to airlocks or leaks, requiring repressurisation via the filling loop. Other common faults include diverter valve failures (no hot water/heating simultaneously) and pump blockages.

4. What happens when a diverter valve fails?
The diverter valve is a key boiler component that controls where hot water goes  whether to your taps, your radiators, or both  keeping your home comfortable. When it begins to fail, your heating and hot water performance can quickly decline.

5. How do I confirm compatibility before ordering?
Match part number 7224344 and your boiler model/GC/serial range against the seller’s compatibility list.