Unvented cylinders St Albans
Unvented Cylinder Service and Repair St AlbansG3 qualified
Plumbers on Tap services and repairs unvented hot water cylinders in St Albans. Shaun holds the G3 qualification for unvented hot water systems, and charges £60 an hour from 8am to 5pm and £70 an hour outside those hours.
Why unvented cylinders need a qualified plumber
An unvented cylinder stores hot water at mains pressure, held in by safety valves. Building Regulations (Part G) require these systems to be worked on by a competent person, and the G3 qualification is the recognised route. Shaun holds G3.
What a service covers
- Checking and recharging the expansion vessel
- Testing the temperature and pressure relief valve
- Checking the pressure reducing valve and cleaning the strainer
- Checking the tundish and discharge pipe
- Checking the cylinder for leaks and corrosion
Manufacturers generally recommend a service once a year. Check your cylinder's paperwork, as some warranties depend on it.
Common faults Shaun repairs
- Water dripping or running from the tundish
- Hot water pressure rising and falling
- Banging or noisy pipes when taps are used
- A valve that has failed or started to leak
Water coming from the tundish?
That is a sign a safety valve is working hard. Call for advice.
Questions
Frequently asked questions
Does an unvented cylinder need servicing every year?
Manufacturers generally recommend an annual service, and some warranties depend on it. Check the paperwork that came with your cylinder.
Why is water coming out of my tundish?
Water from the tundish usually means a safety valve is releasing pressure or temperature, often because the expansion vessel has lost its charge or a valve has failed. Have it checked by a G3-qualified plumber.
What is a G3 qualification?
G3 is the qualification for working on unvented hot water storage systems, which Building Regulations Part G require to be handled by a competent person. Shaun holds G3.