• Man's hand regulating the power of a hot water cylinder system
    Home Appliance

    The Hot Water Cylinder Basics

    The unvented hot water cylinders are becoming more and more popular among households. As these cylinders are connected to the mains supply, they make sure that you have enough amount of hot water stored away to meet your demands at all times with the right pressure so that you enjoy your showers throughout the year!

    These hot water cylinders are not only energy efficient but are also easily operable, and you can even turn them off while going away. Besides, you can choose a storage capacity according to your needs so that you never run of hot water. These cylinders have a very affordable upfront cost and bring you reliable performance for years to come providing you great value for your money. You can even get a cylinder that you can install out of your house to free up space as well as easier excess for maintenance.

    How long will your Cylinder last?

    Like all the material appliances, your hot water cylinder wouldn’t last forever. But here are a few signs to look out for that would tell you when your cylinder needs repairing or replacement.


    When your water cylinder starts to leak, it usually means that it is beyond repair due to internal damage. In case your cylinder starts to leak, you must consider replacing it ASAP! Consult an expert and go ahead with the replacement.


    Another tell-tale sign for your tank replacement is rust. Did you notice rusty water while taking a shower? If yes, then you must go ahead to inspect your tank and its valves for rusting. If you find any of these to be rusting, know that the tank replacement time is near, so begin your cylinder hunt beforehand.

    Heating Element

    The biggest sign of your hot water cylinder not working is the cold water in your taps. This happens when the heating element of your hot water system become inoperable due to a problem. The heating element needs to be replaced after a certain period as it stops working or may even be broken. The heating element replacement is a simple job for an engineer to handle, though, so it shouldn’t be an issue. However, if your tank is more than a decade old, then replacing the whole tank may be a good idea instead of just replacing the heating element.

    As a rule of thumb, replace your hot water cylinder every 10-12 years. However, if you look after your tank and maintain it properly, it can last much longer than this.

    How to determine the size of the Cylinder for your Needs?

    There are many factors that determine the size of the cylinder you may need. Firstly, the size of your hot water tank is directly proportional to your consumption of hot water. If you go for a smaller cylinder than your needs, you will keep running out of the hold water. Contrarily, if you go for a tank too big for your needs, you will end up wasting your energy as well as hard-earned money. Another factor that decides the size of the cylinder is the heating method used.

    The most efficient way of finding out the right size of the cylinder for your needs is by working out the bathrooms, kitchens, and family members in your house. You can find a corresponding cylinder in liters that would best suit your family and home needs.

    The Cost of a Hot Water tank

    In case you wish to replace your hot water cylinder, you must expect the cost to be around £500 for a vented tank and around £700 for an unvented system.