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Unvented cylinders and Megaflo systems: Upgrade your home

If your home has multiple bathrooms and showers, there's a good chance you already have an unvented cylinder installed. Unvented cylinders are the perfect solution for households with higher hot water demands, while maintaining your water pressure and keeping the same temperature. At South London Heating, we’re your local unvented cylinder experts. If your unvented cylinder has stopped working or isn't working as it should, we are here to help.

To enquire about the installation of a new unvented cylinder in your home, or about possible repairs, contact us on 0203 620 5800.

Consult the experts

We’re your local heating and hot water specialists in South London. Get in touch to discuss how an unvented cylinder could benefit your home.

What are unvented cylinders?

Unvented cylinders (often called Megaflo cylinders) are a form of hot water storage used in many larger homes. The water is taken from the mains, heated by your boiler and held under pressure within the cylinder. This unique design means all your hot water outlets operate at the same pressure as your water mains. Unvented cylinders are great for homes where a high demand for hot water exists (like a busy family home). Often fitted in airing cupboards, this system also replaces your cold water storage in the loft, making it more efficient and freeing up space.

We partner with leading brands to bring you top-quality products with the best guarantees. As partner installers, we offer you exclusive guarantees, faster installations, and premium aftercare plans. South London Heating installs premium cylinder brands including Megaflo, Worcester Bosch, and Gledhill. This means your new unvented cylinder will save you money on energy bills and won't let you down. We hold the relevant G3 qualification for working on unvented hot water systems. Our highly qualified team at South London Heating will install your new unvented hot water cylinder quickly, keeping you, your family, and your home warm and clean.

Expert installations: An unvented cylinder in your South London home

Thinking about installing a new unvented cylinder in your property? This could be the ideal option for you if:

  • You’re adding a new bathroom to your existing home
  • You have more than one bathroom and your hot water system is inefficient for your needs
  • You want to use multiple taps, showers, and baths at the same time
  • You want to get rid of an older feeder tank in the loft

Unvented cylinder systems ensure good water pressure, save space, and remain easy to maintain. If you’re thinking of installing one, we’ll be happy to arrange a consultation, taking a full look at your space and recommending the best options for your needs.

Speak with our friendly team

Servicing an unvented cylinder

Hot water cylinders or Megaflo cylinders should be serviced annually to keep them in good working order, reduce the risk of a breakdown, and ensure maximum energy efficiency. Choose us to service your unvented cylinder – we’re familiar with products from all major manufacturers and can save you money on your service. If we find a problem with your system, we’ll repair your existing system or help find a new solution that works for your whole house. You can rely on our servicing expertise.

Repairing your unvented and Megaflo cylinders

If your unvented cylinder has stopped working, it may not mean you need a new one. Here at South London Heating, we’re the experts when it comes to unvented cylinder repairs. This could include working on everything from pressure relief valves to immersion heaters. Whatever the fault, our experienced team can diagnose it quickly and install any parts needed to get you back up and running.

Interested in unvented cylinders? Get in touch

If you’ve been considering installing an unvented cylinder for your home in South London, Bromley, or Croydon, get in touch to discuss the most efficient solution for your property.

Finance options for heating and hot water systems

We’ve partnered with Novuna and offer fantastic, easy ‘spread the cost’ options, to support our customers with monthly payment finance options to fit any lifestyle and budget. You can choose from:

  • Interest free credit options, perfect for keeping money in the bank
  • Lower monthly payments over a longer period, with competitive interest rates
  • Buy now pay later options – you won’t pay anything for the first year!

Contact us to find the best and easiest solution for you.

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Choose South London Heating, Which? ‘Trusted Trader of the Year’!

We are proud winners of the Which? ‘Trusted Trader of the Year’ award and also secured a Which? Certificate of Distinction. These coveted awards are proof of our high-quality work and exceptional customer service, and our dedicated commitment to our customers

Which? is an impartial consumer body – our awards are your proof that we’ll always go above and beyond for you. Experience the difference when you choose an outstanding heating company, endorsed by UK consumer champions!

Learn more about our awards

We provide expert services

We’re your local heating and green energy specialist in South London. We’re a company that stands out for our top-quality work and excellent customer care, as well as our range of services:

Renewable and green energy

If you’re looking for an environmentally friendly way to heat your home, we can provide everything from electric boilers to air source heat pumps.

Gas boilers

From system design to new boiler installation and repair, we take care of everything for your South London home’s central heating system.

Heating and hot water services

We’re experts in powerflushing, underfloor heating installation and design, energy efficiency optimisation, and smart heating.

Transform your home with the help of our team

We can help you transform your South London home’s energy efficiency.

Your local heating specialists in South London

We offer complete, specialist heating services and award winning installations.

New Boiler

An energy-efficient and cost-effective new boiler can save you energy and money, while improving your home

Heat Pumps

Greener, low-energy solutions, perfect for your home, saving your money in the long term, while being kind to the environment

Air conditioning

Luxurious, comfortable living, all year round, with fresh cooling in the summer months and the additional option of heating your home in the winter.

Boiler Service & Repair

Expert service & repair to keep your boiler working reliably and efficiently.

Heating and hot water

Installation of heating and hot systems incl. Megaflo and unvented cylinders

Homecare plan

Join the South London Heating Club to access exclusive services and savings.

Central heating systems

From design to installation, we offer all-round central heating services for your home.

Electric Boilers

Benefit from eco-friendly boilers that have no carbon emissions.

Underfloor heating

Elevate your home comfort in style by installing underfloor heating.

Smart heating controls

Smart controls are increasingly popular give you optimum control on your heating, while improving your home’s energy performance and saving you money

New Radiators

Explore new radiators for your home, including designer models.

Gas Safety Certificates

Are you a landlord? We offer premium services for your tenanted property, including gas safety certificates.