Unvented Cylinder Safety Checks in London

Professional Inspections by G3-Certified Engineers

Unvented hot water cylinders deliver powerful, mains-pressure hot water throughout your home, making them ideal for properties with high hot water demand. However, they must be serviced and inspected regularly to ensure they remain safe, efficient, and legally compliant. At Ninja Plumbers, our G3-certified engineers in London provide thorough unvented cylinder inspections as part of our expert plumbing services.

Why Choose Ninja Plumbers?

  • Fully G3-certified for unvented system work
  • Transparent service from a trusted local team
  • Based in Fulham, serving all of Greater London
  • Fast response for urgent inspections or repairs
  • Compliant with all current Building Regulations

Areas We Serve

We provide unvented cylinder inspections across London, including: Fulham, Chelsea, Hammersmith, Kensington, Battersea, Putney, and beyond.

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Contact Us

24/7 Emergency Contact

Our Fulham-based call centre is open 24/7, meaning you can always reach us in case of an emergency. Whether it’s late at night or early in the morning, our dedicated team is always ready to help.

Fast Response Time

With a commitment to providing fast service, we aim to respond to emergency calls within one hour. Ninja Plumber takes pride in our rapid response times, ensuring your heating system is back up and running as quickly as possible.


Expert Service On-Site

Our emergency heating engineer in Fulham will address the issue efficiently on-site, diagnosing and resolving heating problems with speed and professionalism.

Comprehensive Maintenance

From start to finish, we handle all aspects of the job, ensuring your heating system is fully operational and your property is left clean and well-maintained.

Our 10-Point Safety Inspection Includes:

  1. Pressure Relief Valve (PRV) – Checked for leaks and proper operation.
  2. Temperature & Pressure Relief Valve (T&P Valve) – Tested for safe function—critical for preventing overheating or overpressure.
  3. Expansion Vessel – Inspected for correct pressure (usually around 3 bar) and to ensure it's not waterlogged.
  4. Discharge Pipework – Verified for G3 compliance, unobstructed flow, and safe termination.
  5. Immersion Heater Thermostat – Tested to ensure it cuts out at the correct temperature.
  6. Tundish – Checked for visibility and dryness during normal operation.
  7. Isolation Valves – Confirmed to be fully operational.
  8. Benchmark Logbook – Reviewed for accurate service history and compliance.
  9. Water Pressure – Measured for both static and dynamic performance.
  10. Visual Inspection – Examined for signs of corrosion, overheating, or leaks.
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Book Your Safety Inspection Today

Don’t risk your hot water system failing or putting your household at risk. Let Ninja Plumbers handle your unvented cylinder with care and compliance. Book a visit from our G3-certified experts today.

During an Unvented Cylinder Inspection, Key Safety Checks Include:

1. Pressure Relief Valve (PRV) – Ensure it’s not leaking and operates correctly.
2. Temperature & Pressure Relief Valve (T&P Valve) – Test for correct function; this is a critical safety feature.
3. Expansion Vessel – Check pressure (usually around 3 bar) and that it's not waterlogged.
4. Discharge Pipework (G3 Compliance) – Inspect that it's correctly installed, unobstructed, and terminates safely.
5. Immersion Heater Thermostat – Check for correct operation and that it cuts out at the right temperature.
6. Tundish – Confirm it's visible and dry under normal conditions.
7. Isolation Valves – Ensure all valves are functional.
8. Benchmark Logbook – Verify if all installation and service records are updated.
9. Water Pressure – Measure static and dynamic pressure.
10. Visual Inspection – Look for signs of corrosion, leaks, or overheating.
 
Only G3-certified engineers can legally install or service unvented cylinders.

"WHY CHOOSE NINJA PLUMBER?"

  • Fully G3-certified for unvented system work
  • Transparent service from a trusted local team
  • Based in Fulham, serving all of Greater London
  • Fast response for urgent inspections or repairs
  • Compliant with all current Building Regulations