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Glow-Worm Energy 35 Store Combi Boilers

The Glow-Worm Energy 35 Store Combi Boiler has a price tag of around £1,547.64 including VAT and excluding the cost of installation.

Glow-Worm Energy 35 Store Combi Boiler

Suitable for large households, the Glow-Worm Energy 35 Store Combi is a wall hung appliance that has the benefits of a system store and combination boiler.

This model can provide you with efficient heating and plenty of instant hot water because it has an output of 35kW and a flow rate of 19.7 litres per minute. As the boiler measures in at 890mm (H) x 470mm (W) x 561mm (D), you can either hang it on your kitchen wall or keep it hidden away in a storage cupboard.

You can expect to pay around £1,547.64 for the Energy 35 Store Combi which comes with a standard 7-year parts and labour guarantee. The warranty period can be extended though, on the condition that the boiler is fitted by a Glow-Worm Club Energy installer.

Boiler Energy Efficiency Credentials

Rated 89.4% for efficiency, the Energy 35 Store Combi is an A-rated boiler that features a highly efficient modulating Grundfos pump. This special pump helps to save energy and lower running costs by automatically adapting the boiler output and water flow to meet your heating and hot water demands. The boiler is also designed and manufactured with high efficiency combi store technology (two 21 litre insulated tanks) to reduce heat loss and provide super-fast hot water re-heat times of less than 5 minutes.

Energy 35 Store Combi Technology and Main Advantages

Glow-Worm’s Energy 35 Store Combi is unique in that it features two insulated 21 litre water storage tanks to enable the boiler to provide a constant supply of instantaneous hot water to bigger properties. This basically means that the appliance acts a bit like a system and combi boiler all rolled into one – and without the need for a separate hot water cylinder (something you would need to have installed with a system boiler).

Since this model has a domestic hot water flow rate of 19.7 litres per minute, the boiler can quickly provide plenty of water to fill a bath and an excellent flow of water to multiple showers running at the same time. Most combi boilers tend to struggle to cope with 2 showers running simultaneously, which is why many larger homes have a system boiler installed instead of a combi.

The boiler has a clear digital display, as well as a range of simple controls including a reset button and a mode selector to enable you to adjust settings and temperatures. And although the Energy 35 Store Combi runs on natural gas, it can be converted to run on LPG (liquefied petroleum gas) with a conversion kit.

Is the Glow-Worm Energy 35 Store Combi the Right Boiler Type and Size for Your Home?

This boiler has been designed specifically for large homes in need of high performance heating and an unlimited supply of hot water for multiple bathrooms. Having said that, the Energy 35 Store Combi won’t be suitable for all large properties, so you must ask a Gas Safe engineer to take a look at your home to determine which boiler size you require. If you choose a boiler that is too big or too small for your household, it won’t live up to its full potential and you will not achieve lower energy bills.


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Glow Worm Energy Store 35 Combi CombiH - 890 mm
W - 470 mm
D - 561 mm
19.7 35 KW£ 1,547.64


A-rated combi boiler Save money on your gas bills
Two insulated 21 litre water storage tanksEfficient heating and instant hot water
High efficiency combi store technologyFast hot water re-generation times
Domestic hot water flow rate of 19.7Comfort and convenience
Highly efficient Grundfos pumpMaximises efficiency and lowers running costs
Compatible with the full range of Glow-Worm controlsAlternative energy and cost saving options
7-year parts and labour warrantyConfidence and peace of mind
Free warranty upgrade when installed by a Club Energy installerAdded peace of mind

Our Honest Opinion of the Glow-Worm Energy 35 Store Combi

If you live in a large property and have a demand for hot water, the Glow-Worm Energy 35 Store Combi could be the perfect boiler replacement for you. The appliance can not only create high volumes of instant and continuous hot water but also precisely match your demand for heat and hot water to reduce fuel consumption and maximise both energy and money savings.

You also need to remember that the Energy 38 Store Combi is an ErP A rated boiler, so you can be confident that you’ll get an optimum energy efficiency model that will help to cut the cost of your fuel bills. And even though it’s a reasonably priced unit, you’ll get a 7-year warranty as standard – which is pretty generous for a budget boiler.

Advice on Boiler Quotes and Gas Safe Engineers

Comparing Glow-Worm Energy 35 Store Combi prices could save you a lot of money, so we recommend you shop around for quotes from reputable boiler replacement companies and fully qualified installers. You also need to make sure that the installation is carried out by a Gas Safe engineer to ensure the work is done safely and legally. To check the registration status of an installer, ask to view the details on their ID card or run a search at the Gas Safe Register website. If you’re short on time, please don’t hesitate to use our free online service to receive no-obligation quotes from trusted suppliers and registered engineers.


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