Recent work · Boiler servicing
New pressure relief valve and a service on a Worcester 440
A Worcester Bosch Highflow 440 in Worcestershire that was losing pressure. Ian fitted a new pressure relief valve, topped up the expansion vessel and serviced it.
The job
- Job
- Boiler servicing
- Appliance
- Worcester Bosch Highflow 440
- Fuel
- Gas
- Where
- Worcestershire
- When
- 5 September 2026

In Ian's words
I serviced a Worcester Bosch 440 Highflow. There was a bit of an issue with it losing pressure, so I changed the pressure relief valve and topped the expansion vessel pressure back up.
Now it's holding its pressure and the valve isn't letting by. With the annual service done as well, it's a happy customer, ready for the winter.