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Hot Water Tanks (unvented cylinders)

Unvented hot water cylinders have grown rapidly in popularity since they were introduced to the UK in the 1980s.

They operate at mains pressure, which means they offer much better flow rates than vented cylinders, resulting in higher shower and bath performance. It also means they don’t need to be located high up, and can be placed almost anywhere in your home.

hot water tanksThe other main advantage is that they don’t require a cold water tank in the loft, which frees up space and removes the potential risk of freezing during the winter.

Hot water tanks have traditionally been used with system boilers, and have not been compatible with the more popular modern combination boilers (which heat water on demand). The main downside of combi boilers is that if demand is high (for example if multiple people are having showers at the same time) the combi boiler may struggle to cope, and either temperature or pressure may drop.

However, with the new Intergas Range it is now actually possible to connect an unvented cylinder to a combi boiler, giving you the best of both worlds when it comes to efficiency and consistent, high level performance.

As unvented hot water tanks operate at higher pressure than vented systems and have additional safety features installed, it is crucial that these cylinders are installed by qualified specialists.

A & M Plumbing hold all the relevant certifications to advise on and install new unvented hot water cylinders, and also to repair existing ones.

Hot water tank repair

Are you having a problem with your unvented hot water cylinder? Call us for advice.

Most common faults with unvented hot water tanks:

  • No hot water – this is usually due to a faulty element or thermostat.
  • Discharge of water – this would be potentially harmful, so if your unvented cylinder is discharging water, please contact a professional right away. We aim to respond to emergencies within the same day, often within an hour.
  • No water at all – this is probably due to a blocked filter.

Water coming out too hot – this may be due to a faulty thermostat that will need fixing or replacing.

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Our Customers Say "Mick’s service was outstanding – he was here within an hour of me calling with the news our boiler had broken and had a new one installed within 24. The new boiler is clearly top quality, but the price was better than other quotes we’ve had in the past." - Kat, Leeds

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Buying a new boiler is a significant investment, and for many families it can be a struggle to find the funds. But when a boiler breaks down, it becomes a necessity.
We offer a boiler finance service to spread the cost of getting a new boiler and make it more affordable.

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