Unvented Cylinder Service & Repair
Unvented Cylinder Service & Repair in Richmond, Twickenham, Clapham, Wimbledon, Wandsworth, Ealing, & Brentford
If your home has a Megaflo or other unvented hot water cylinder, keeping it well maintained is important for reliable, safe hot water. Unvented cylinders store pressurised hot water directly from your boiler or heat source, providing high flow rates and instant hot water at multiple taps. However, without regular servicing, faults can develop that reduce efficiency or risk damage and safety issues. Plumbing Correct offers expert unvented cylinder service and repair across Richmond, Twickenham, Clapham, Wimbledon, Wandsworth, Ealing, Brentford, and surrounding areas.
Common Problems with Unvented Cylinders
Unvented cylinders rely on several safety devices and components to operate safely under pressure. When these parts fail or wear out, you might notice warning signs such as:
“No hot water or inconsistent hot water supply”
- Low water pressure at taps fed by the cylinder
- Unusual noises like banging or rumbling within the cylinder or pipework
- Immersion heater not working or failing to heat water
- Water dripping from the tundish – indicating discharge from the temperature or pressure relief valve
What Happens During an Unvented Cylinder Service?
Diagnosis and Inspection
We assess the cylinder and associated pipework, checking for leaks, corrosion, and signs of wear.
Safety Device Checks
We test the temperature and pressure relief valve, ensuring it operates correctly and safely discharges water if necessary.
Expansion Vessel and Pressure Reducing Valve
We verify the expansion vessel’s pre-charge pressure and inspect the pressure reducing valve and its strainer for blockages or faults.
Tundish and Discharge Pipework
We inspect the tundish for signs of dripping or discharge, which can indicate valve issues, and check that discharge pipework is intact and correctly routed.
Thermostat and Immersion Heater Testing
We test the thermostat settings and the immersion heater’s operation to confirm reliable water heating.
Overall System Condition
We review the general state of the cylinder and pipework, recommending any repairs or replacements if necessary.
Unvented Cylinder Repair Options
Component Replacement
Often, replacing faulty parts such as the pressure relief valve, expansion vessel, thermostat, or immersion heater is sufficient to restore safe and efficient operation. We use manufacturer-approved components to maintain system integrity.
System Upgrade or Cylinder Replacement
In cases of extensive damage or an ageing cylinder, a full replacement or upgrade to a newer model may be more cost-effective in the long term. We can guide you through selecting a suitable replacement that matches your household’s hot water needs.
Certifications and Compliance
Plumbing Correct employs engineers fully qualified to service and repair unvented cylinders, holding G3/unvented cylinder certification. If your boiler is the heat source, we are Gas Safe registered to work safely with gas appliances. We carry comprehensive insurance and provide guarantees on our workmanship and parts.
All our work complies with Building Regulations G3, which cover the safe installation and maintenance of unvented hot water systems. In simple terms, this means your unvented cylinder will operate safely without risk of overpressure or damage to your property when serviced or repaired by us.
For further peace of mind, Plumbing Correct offers transparent pricing and clear communication throughout the process.
Call Plumbing Correct on 02036334011 to discuss your unvented cylinder needs or to book a service.
Frequently Asked Questions
Our Process for Unvented Cylinder Service & Repair
We visit your property to inspect the cylinder and identify any faults or maintenance needs.
Looking for Professional Unvented Cylinder Service & Repair?
Contact Plumbing Correct on 02036334011 to book your unvented cylinder service or repair today. You can also learn more about our boiler repairs or explore our gas services and pipework for comprehensive home heating solutions.
Call Plumbing Correct now on 02036334011 or Book Now to keep your unvented cylinder safe and efficient.