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💧 The Importance of Servicing Your Unvented Hot Water Cylinder — GPJ Plumbing, Longbridge
If your home relies on an unvented hot water cylinder, keeping it serviced isn’t just about performance — it’s about safety and reliability. At GPJ Plumbing, based in Longbridge, we specialise in servicing, repairing, and maintaining unvented hot water systems across Blackwell, Alvechurch, Barnt Green, and the wider South West Midlands.
Why does an unvented cylinder need servicing?
Unvented cylinders are high-pressure systems that store hot water safely and deliver great flow rates to your taps and showers.
However, because they operate under pressure, they rely on several critical safety components — including valves, thermostats, and expansion controls. These parts must be checked regularly to make sure they’re working properly.
Annual servicing ensures that:
- ✅ Safety valves are functioning correctly.
- 💧 Expansion vessels or air gaps are properly charged.
- 🔥 Thermostats and safety cut-outs prevent overheating.
- 🧰 Any small leaks or limescale build-up are caught early.
- 🧾 Your manufacturer’s warranty remains valid.
Most major manufacturers, including Megaflo, Heatrae Sadia, and Gledhill, specify annual servicing by a G3-qualified engineer as part of their warranty terms.
What happens if it’s not serviced?
There aren’t official UK statistics showing exactly how many breakdowns happen because servicing was missed — but industry guidance from the Hot Water Association (HWA) and manufacturers agrees: skipping maintenance increases the risk of failure.
Common avoidable faults include:
- Continuous discharge from the tundish (expansion issue)
- Loss of hot water temperature or pressure
- Leaking safety valves
- Inefficient heating and higher energy use
A quick, affordable annual check can prevent these problems before they become expensive emergencies.
GPJ Plumbing — your local G3-qualified engineer
As a G3-qualified plumbing engineer based in Longbridge, I provide professional unvented cylinder servicing for homeowners and landlords across:
➡️ Blackwell
➡️ Alvechurch
➡️ Barnt Green
➡️ The wider South West Midlands area
Each service follows Hot Water Association best practice, including testing all safety valves, checking controls, verifying expansion vessels, and inspecting discharge pipework for compliance.
You’ll receive a clear service record and honest advice on any issues found — no upselling, no unnecessary work, just reliable local service.
Book your service today
Don’t wait for a breakdown to find out something’s wrong.
Get peace of mind knowing your system is safe, efficient, and ready for another year of reliable hot water.
📞 Call GPJ Plumbing or book online at www.gpjplumbing.co.uk
Proudly serving Longbridge, Blackwell, Alvechurch, Barnt Green, and the South West Midlands.
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