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    Glow-Worm Ultimate Regular Open Vent Boilers

    The Glow-Worm Ultimate3 Regular Open Vent Boiler will set you back around £870.00 including VAT and excluding the cost of installation.

    Glow-Worm Ultimate Regular Open Vent Boiler

    Glow-Worm’s Ultimate3 Regular is a 25kW open vent boiler that is designed to suit homes where hot water demand is greater.

    It’s compact dimensions measure 600mm (H) x 375mm (W) x 280mm (D), meaning it can be sited in a number of locations and is even small enough to be installed in a standard kitchen cupboard. By being a regular conventional boiler, it’s only ideal for properties with a traditional setup that is linked to a separate cold water tank and hot water storage cylinder.

    The Ultimate3 Regular is a cost-conscious boiler with a typical price tag of £870.00, making it a lot more affordable than its more expensive competitors. It also comes with a 5-year parts and labour warranty but this will only be valid if your Gas Safe engineer registers the installation on the Glow-Worm Club Energy programme.

    Boiler Energy Efficiency Credentials

    Depending on the efficiency rating of your existing boiler, the Ultimate3 Regular could save you hundreds of pounds a year because it’s an energy-efficient A rated model. It even features a high-efficiency Grundfos pump, which helps to lower running costs and give the boiler the ability to adapt its output to meet your exact heating and hot water demands. Plus, efficiency levels can be boosted with the use of Glow-Worm’s optional intelligent controls including the popular MiGo Wi-Fi thermostat that can be controlled via an app.

    Ultimate3 Regular Technology and Main Advantages

    One of the great things about this model is its automotive grade aluminium heat exchanger, which is included to deliver superior boiler performance. There’s also the Grundfos pump we mentioned above to enhance efficiency and reduce wear and tear on components. By having such high-quality parts, the boiler is easy to install, maintain and service as well.

    When it comes to boiler controls, the Ultimate3 Regular features a simple-to-use interface and modern LCD display to make adjusting and managing the unit easy and straightforward. The display is actually quite bright to enable you to change and confirm settings even when the boiler is located in a poorly lit room or area of your home.

    Is the Glow-Worm Ultimate3 Regular the Right Boiler Type and Size for Your Home?

    Regular boilers (often referred to as heat only, traditional or conventional boilers) are best for dwellings where a lot of hot water is used simultaneously and homes with a cold water tank and hot water cylinder already in place. As this regular boiler has a 25kW output, it’s a good option for various types of small to medium-sized properties. However, it’s impossible for us to say whether the Ultimate3 Regular can meet your needs without seeing your home, so you must consult with a Gas Safe engineer prior to purchasing this model.


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    A-rated combi boiler Save money on your gas bills
    Highly efficient Grundfos pumpHighly efficient performance
    Automotive grade aluminium heat exchangerHighly efficient performance
    Clear LED displayDelivers clear visibility in poor light conditions
    Compatible with the full range of Glow-Worm controlsAlternative energy and cost saving options
    5-year parts and labour warranty when registered through Club EnergyConfidence and peace of mind

    Our Honest Opinion of the Glow-Worm Ultimate3 Regular

    The Glow-Worm Ultimate3 Regular is a reliable boiler that will meet the requirements of your small to medium home, giving you plenty of heat for your radiators and bucket loads of water when you need it. It’s also a budget-friendly solution with energy efficient components that can not only lower your energy bills but also reduce your carbon footprint.

    This model’s compact size and sleek design help to ensure the unit will look great in your house, however, you can keep it tucked away in a kitchen cabinet if you prefer. And because installation, maintenance and servicing are so straightforward, disruption is minimal and engineer costs are cheaper.

    If having lots of hot water is a priority and you don’t have the biggest budget to play with, the Ultimate3 Regular could be the efficient and economical boiler for you. Just remember to get a Gas Safe engineer to install the unit and register the installation to validate your 5-year warranty.

    Advice on Boiler Quotes and Gas Safe Engineers

    To get the best deal on the Glow-Worm Ultimate3 Regular, you’ll need to obtain a few quotes on the boiler and installation so that you can compare prices. It’s also extremely important to choose a Gas Safe installer to ensure the fitting work is carried out correctly and in a safe manner. You can check the status of an engineer by taking a look at the details on their ID card or running a search at the official Gas Safe Register website. If you haven’t the time to do your research, please don’t hesitate to use our free online service to get a range of no-obligation quotes from trusted suppliers and registered installers.


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