Megaflo Services and Repairs London Unvented Cylinders

A White Glove Service For Your Home

Megaflo is an unvented cylinder. As part of your home's central heating system, Megaflow stores hot water and supplies hot water whenever you need it.

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Megaflo Services and Repairs London Unvented Cylinders

🔧 Expert Megaflo Repairs in London

Unvented hot water systems like Megaflo deliver consistent water pressure and luxury-grade hot water — but when something goes wrong, you need a true specialist. At RARE Plumbing London, we’re trusted across Central and Greater London for reliable, safe, and expertly delivered Megaflo repairs, annual servicing, and replacements.

Whether you’re managing a high-end residence in Mayfair or a commercial development in Westminster, our Gas Safe registered engineers have decades of hands-on experience with Megaflo hot water systems and other Heatrae Sadia unvented hot water cylinders.

🛠️ What Is a Megaflo Unvented Hot Water Cylinder?

A Megaflo unvented hot water cylinder connects directly to the mains supply, delivering powerful flow rates without the need for a cold water storage tank. This makes it the system of choice for large households, luxury properties, and multi-bathroom homes across London.

We regularly maintain and repair Megaflo cylinders in:

Period homes with high-demand bathrooms
Contemporary new-builds with pressurised hot water systems
Flats and townhouses fitted with indirect or direct Megaflo cylinders

🧰 Common Megaflo Repairs We Handle

Megaflo cylinders are built for durability — but like all systems, components can fail. We frequently repair:

Leaking expansion vessels
Faulty immersion heaters
Dripping temperature/pressure relief valves
Leaking drain taps
Blocked strainers and filters
Sudden pressure loss or poor hot water flow

💬 If your Megaflo isn’t delivering reliable hot water, contact us today. We’ll diagnose the fault, explain your options clearly, and provide a safe, long-term repair.

🔁 Annual Megaflo Servicing – Why It Matters

Heatrae Sadia recommends annual servicing to keep your Megaflo running efficiently, maintain your 10-year manufacturer warranty, and ensure safety.

Our Megaflo annual service includes:

✔️ Cleaning the line strainer and filters

✔️ Testing & repressurising the internal air gap

✔️ Inspecting the pressure relief and safety valves

✔️ Verifying thermostats, immersion heaters, and controls

✔️ Checking hot water flow rates and outlet temperatures

We provide full service documentation — ideal for homeowners, landlords, and property managers seeking compliance and peace of mind.

🔄 Megaflo Installation & Replacement Services

Sometimes, repair isn’t enough. If your system is aged, inefficient, or repeatedly failing, we also offer:

Megaflo installation in new homes and renovations
Repair and installation upgrades for older unvented cylinders
Full replacement of Megaflo hot water systems with the latest Heatrae Sadia models
Bespoke solutions for commercial properties and large-scale residential blocks

👉 Learn more about our Hot Water Cylinder Repairs London.

📍 Where We Operate

From Hampstead to Pimlico, Belgravia to Mayfair, our engineers cover all Central and Greater London areas. We respond quickly, use only genuine Megaflo and Heatrae Sadia parts, and always work cleanly and respectfully in your property.

🔗 Related Services You May Need

🧰 Why Choose RARE Plumbing London?

Gas Safe Registered Engineers
Specialists in Megaflo and Heatrae Sadia unvented hot water systems
Transparent pricing with no hidden costs
Genuine parts, full documentation, and warranty-safe work
Trusted across London’s most prestigious homes and developments

📞 Book Your Megaflo Repair in London

Don’t risk losing hot water or damaging your property. Let RARE Plumbing London take care of your Megaflo system with expert servicing, repairs, and installation.

📱 Call: 020 7458 4949

✉️ Email: hello@rareplumbing.london

🖱️ Request Your Megaflo Service Today

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Schedule a repair service

We are available 24/7 for heating and plumbing repairs.

Schedule a Repair

OUR PROCESS

What's our RARE process?

STEP 1

To get in touch with us, you can call the phone number on the contact page or email us.

STEP 2

We can provide phone advice and schedule a property visit if necessary, usually within a few hours.

STEP 3

We will come to your home and protect your furniture and valuables so nothing gets damaged.

STEP 4

Once the work has been agreed upon, we will send you an invoice and proceed with payment only after ensuring your complete satisfaction.

PRICING

RARE Heating and Plumbing Services is the leading provider of plumbing and heating services in London. We employ a team of talented tradesmen with the skills and experience necessary to tackle heating and plumbing projects of any size.

Rates

Monday - Friday

8am - 5pm

5pm - 8am

Saturday - Sunday

24hrs

Plumbing, Heating

£150

£195

£250

Boiler Service

£240*

Gas Safety Certificate

£180

**Fixed Price
Our Rates: We charge a minimum of one hour on all jobs, thereafter work is charged in 15-minute increments (most other companies charge in half hours). Rates exclude materials and are subject to VAT.

* Boiler Service
All Boiler service is subject to parts as some boilers require parts as part of the service this will be charged at a extra cost depending on the boiler.

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Happy Customers

Have a look at our outstanding reviews to see how we treat our customers and their homes.

“From the moment I called RARE Plumbing, I felt like I was in safe hands. They arrived on time, explained everything clearly, and fixed our boiler the same day with zero mess. It’s rare to find tradespeople this professional — I wouldn’t hesitate to recommend them.”

Amelia D., St John’s Wood

We had a problem with our boiler and complex heating system that other plumbers refused to touch. Paresh took it on, and fixed it very quickly. The visit was swift and easy, and he was very sensitive to our shielding requirements.

Michael Quicke

Having previously used Rare to do a full system installation, including new heaters, storage tank, new boiler install, bathroom fit & kitchen appliance install and new piping throughout the home, I called upon them again to service our boiler this winter.

Amit Halai

Paresh is unusual for a London tradesman -- he comes when he says he will come, he charges what he says he will charge, and the workmanship is always first class. I cannot recommend him highly enough.

James Robertson

Helped me with underfloor heating issue - I am so lucky to have found them! Great customer service, so knowledgeable - can't recommend them highly enough.

Becky B

I called Rare on Christmas Day with an urgent boiler problem. The team was very responsive, professional and polite - the issue was fixed quickly and fortunately they saved us from spending Christmas in a cold home with no warm water! Thanks again!

Yorick Duizendstraal