Unvented Cylinder & Megaflo Systems
Do you want to have high pressure hot water coming from your taps and showers? Then you need to get an unvented cylinder
3 Simple Steps to Book Your Unvented Cylinder and Megaflo Services in London
Book Your Appointment
- Use our easy online booking form to schedule a survey visit at your convenience.
Receive Your Quote
- The unvented cylinder engineer will inspect the boiler, provide an estimate, and confirm the details.
Enjoy the Results
- On the scheduled day, the engineer will perform the service, ensuring you enjoy a safe and efficient installation.
Unvented Cylinder & Megaflo Installation, Servicing, and Repair in London
At Lasting Ltd, we specialise in unvented cylinder & Megaflo installation, servicing, and repair across London. Our expert, Gas Safe-certified engineers ensure your home enjoys consistent and high-pressure hot water, offering long-term solutions for your heating and hot water needs. Whether you need an unvented cylinder installed in a new build or require a repair on your existing Megaflo system, we have the experience to handle it all.
Common Unvented Cylinder Problems We Repair
Water Dripping from the Expansion Pipe
This issue is commonly caused by the expansion vessel pressure being too low or the water temperature being too high, which forces the water to expand and leak from the pipe. Our engineers will check and adjust the expansion vessel’s pressure to restore the system’s balance and prevent further leaks.
Low-Pressure Leaking Shower
Low pressure may be caused by a buildup of limescale or a problem with the cold water supply to the cylinder, affecting the shower’s performance. Our engineers will diagnose the issue and provide a thorough cleaning of the cylinder and components to restore optimal water pressure.
Clogged Inlets and Inconsistent Water Flow
Blockages in the inlets, often caused by debris or limescale, can disrupt water flow, leading to inconsistent hot water delivery. We will clean or replace the affected parts to restore proper flow and consistency in water temperature.
Limescale Damage
Hard water in areas like London often leads to limescale buildup, which can damage the internal components of the cylinder, affecting both efficiency and lifespan. We provide professional descaling services and preventative maintenance to protect your system from limescale-related issues.
Leakages from the Combination Valve
A faulty or worn-out combination valve can lead to leaks, which may occur due to age, pressure issues, or scale buildup within the valve. We will inspect, repair, or replace the valve to ensure the cylinder is functioning properly and securely.
Strange Noises from the Vessel
Gurgling or whistling noises typically indicate a buildup of air or limescale within the system, which prevents smooth water flow. We will remove airlocks, flush the system, and remove any scale to ensure the cylinder operates quietly and efficiently.
General Leaks and Corrosion
Leaks and corrosion can result from prolonged use, system wear, or improper installation, compromising the integrity of the unvented cylinder. Our skilled engineers will identify and replace any damaged parts, ensuring your system is safe and operational.
Difficulties Setting and Maintaining the Right Temperature
A malfunctioning thermostat or faulty sensor may cause difficulties in maintaining the desired water temperature. Our engineers will inspect and repair the thermostat, ensuring your cylinder maintains the correct temperature efficiently.
Our Competitive Hourly Rates for Unventend Cylinder Services
Monday - Friday
| Appointments | 8am – 6pm | Before/After Working Hours | |
|---|---|---|---|
| First Half Hour | £67 | £78 | |
| Subsequent Half Hours | £54 | £66 | |
| Day Rates | £591 | – | |
Weekend
| Appointments | 8am – 6pm |
|---|---|
| First Half Hour | £78 |
| Subsequent Half Hours | £66 |
Weekend
| Appointments | Before/After Working Hours |
|---|---|
| First Half Hour | £84 |
| Subsequent Half Hours | £72 |
The minimum appointment time you can book is 1 hour, then we charge on an half hour basis. You always pay only for the actual time spent. If there is any shopping time and extra materials needed they come on top of the initial quote.
Unvented Hot Water Cylinder and Megaflo Installation Service in London
At Lasting Ltd, we provide expert unvented hot water cylinders and Megaflo installation services throughout London, ensuring you have a consistent, high-pressure hot water supply in your home. Unvented systems are gaining popularity due to their ability to deliver high water pressure directly from the mains, offering reliable and efficient heating solutions for households of all sizes.
Unlike traditional systems with tanks, an unvented cylinder is connected directly to the mains water supply, allowing for higher pressure and improved water flow. This means that you get more consistent hot water throughout your home, making your shower experience, bath filling, and kitchen tasks much more efficient.
Moreover, unvented cylinders are quieter than traditional systems, eliminating the gurgling sounds often heard with older systems when water tanks refill slowly. Additionally, these systems reduce the risk of pipes freezing during colder months, as their water pipes are built into the loft.
At My Plumber, we offer installation, maintenance, and repair services for all types of unvented hot water cylinders, including Megaflo. Our engineers are equipped to install both direct electric immersion tanks and indirect gas-powered cylinders. If you’re considering replacing your hot water system, it’s important to consult with us first, as each home has unique needs. Our expert technician will visit your property to assess your requirements and recommend the best solution tailored to your specific needs.
Comprehensive Service and Maintenance for Your Unvented Hot Water Cylinder in London
At Lasting Ltd, we offer expert servicing and maintenance of unvented hot water cylinders in London. Unvented cylinders are pressurised systems that need regular servicing to stay efficient and safe. Having a G3-certified engineer service your system annually helps maintain optimal performance, extend its lifespan, and prevent costly repairs. Our engineers conduct thorough inspections to identify potential issues early and ensure your heating system operates smoothly year-round.
Filter and Strainer Cleaning
Air Charge Pressure
Internal Expansion Facility
Expansion Relief Valve Inspection
Flow Diffuser Cleaning
Cylinder Integrity Check
Float-Operated Valve
Temperature and Pressure Relief Valve Testing
Pressure Check
By providing thorough servicing and maintenance, we ensure that your unvented cylinder remains in optimal condition, delivering efficient, high-pressure hot water without interruption.
Unvented Hot Water Cylinder Repair in London
At Lasting Ltd, we specialise in unvented hot water cylinder repairs and troubleshooting for homes across London. Unvented cylinders are complex systems that require expert attention when issues arise. If you suspect or discover that your unvented hot water cylinder is malfunctioning, don’t hesitate to contact us. We offer fast and efficient repairs, ensuring minimal disruption to your home.
Common Unvented Cylinder Issues We Repair
Unvented hot water cylinders, including Megaflo systems, can face a variety of faults. Lasting Ltd’s engineers are equipped to handle all types of unvented cylinder repairs. Some of the common issues we fix include:
Malfunctioning Controls and Safety Devices
Loss of Power
Faulty Expansion Valves
Faulty Thermostats
Failed Expansion Vessels
Symptoms That Indicate Your Unvented Cylinder Needs Repair
If you’re experiencing issues with your unvented hot water cylinder, look for these signs:
The boiler is on, but there’s no hot water. This could indicate a failure in the heating element or thermostat.
Hot water only lasts for a few minutes. A malfunctioning thermostat, heating element, or a buildup of sediment in the tank could cause short-lived hot water.
Water Escapes Through a Tundish – A sign that the pressure relief valve is not functioning properly, resulting in overflow.
Water isn’t heating up when the electric element is on – Indicates a potential failure in the electric immersion heater or thermostat.
Reasons to Choose Megaflow
Reasons to Choose Megaflow
Megaflow is the brand leader in unvented domestic water heating. An unvented cylinder can often provide a higher level of hot water than a combi boiler and can be an ideal solution for larger properties with multiple bathrooms. It’s one of the most trusted names in the industry, offering a range of benefits that make it an excellent choice for many homeowners. Here are the top reasons why you should choose Megaflo for your home:
Brand Leader in Unvented Domestic Water Heating
Fast Filling of Baths
Flexible Installation Locations
Ideal for Larger Properties with Multiple Bathrooms
More Powerful Showers
Energy Efficient
Why Choose Lasting Ltd for Your Unvented Cylinder Repairs in London?
Whether you need a new installation, a replacement system, or reliable maintenance, Lasting Ltd is your go-to provider for unvented cylinder and Megaflo services in London.
Certified Engineers
Fully Insured & Guaranteed
Fast Response Times
Comprehensive Repairs
7-Day Service
Transparent Pricing
Expert Installation
Ongoing Maintenance
Complete London Coverage
We cover the entire Greater London, within the M25 zone, so no matter if you are a homeowner, tenant or business proprietor, Lasting Ltd is here for you! We work with teams of certified plumbers and gas safe registered engineers who are based near you, so they can respond in good time to assist you.