Glow Worm Energy

Glow-worm boilers are a budget boiler brand, they offer cheap boilers with average build quality. The problem with Glow-worm is that if you’re looking for a budget brand boiler, there are better ones out there. Additionally, by spending a little bit more, you can get a mid-range boiler like an Ideal, which will be a lot more reliable.

WarmZilla recommends Ideal boilers if you’re looking for a reliable mid-range boiler. Our Ideal boilers come with a massive 8-year guarantee and start from just £1549 for the Ideal Logic range, which is a great price for a mid-range boiler with the reputation and aftercare Ideal offer.

Glow-worm offers a range of combi, system, and regular boilers. If you aren’t sure what boiler type you have, check out our blog, it’s important to know your boiler type before getting any boiler quotes.

Once you know what boiler type you’re looking for, you can use the WarmZilla boiler comparison function below. Just select up to 3 boilers you want to compare and you’ll be able to compare key stats side by side to see which Glow-worm (or another boiler brand) is best for you.

You can also take the WarmZilla survey, by answering a few simple questions about your home we will be able to recommend suitable boilers for your heating and hot water requirements. You can get a quote on a new boiler in just a few minutes without adding any personal details.

WarmZilla does not currently offer Glow-worm boilers, instead, we offer Vokera boilers starting from £1489 in the budget boiler category and Ideal boilers starting from £1549 if you want to spend a little bit more for a bit of added reliability and build quality. 

WarmZilla Vokera boilers come with a 5-year warranty and our Ideal boilers come with an impressive 8-year warranty.

Glow-worm boiler prices vary depending on the model you choose and the kW output of the model you require. The Glow-worm Energy combi boiler will cost you around £1000 just for the boiler alone without installation and all the extras you get with a WarmZilla boiler.

Boilers sold by WarmZilla come with Gas Safe installation, system filter, system cleanse, inhibitor, wireless thermostat, up to 12 years guarantee, any flues or extension kits you may need; plus if your condensate or gas pipes require upgrading – that’s included in your fixed price boiler quote too!

You can get a quote now on a new boiler with all the extras mentioned above, in a few minutes using the WarmZilla online survey.

Glow-worm, similarly to other boiler manufacturers, request that you get your boiler serviced annually. This not only keeps your warranty valid but also keeps yourself and others in your home safe.

A typical boiler service takes around 1 hour to complete. During this time your engineer will identify any defects from the inspection.

The lifespan of your boiler depends on how well you maintain it. Having your boiler annually serviced will improve its efficiency and extend its lifespan. It will also minimise the risk of nasty repair bills.

You can book your annual boiler service through Glow-worm for as little as £99.

So, what does a typical boiler service look like? Your standard boiler service will include:

• A full inspection of your boiler’s components
• An inspection of the main injector, spark probe, burner, heat exchanger, electrical connections and controls
• Your Gas Safe engineer will check your boiler seals, pipework and combustion releases to ensure they are functioning correctly and are at the correct pressure
• Replacement of any damaged or worn parts
• Clean the necessary components to ensure your boiler is performing as efficiently as possible

With an output of 12kW, this regular gas boiler is the least powerful in its range, however, it is ideal for smaller homes with a low demand for central heating and hot water. This regular boiler is powerful enough to heat a home with up to 10 radiators and a bathroom. If you feel that your home requires a higher demand for heating and hot water, Glow-worm has also designed the Energy Regular 15kW, 18kW, 25kW and 30kW which could be better suited to your home. 

It is important to note that when buying a new or replacement regular boiler, that you will need to accommodate additional space in the attic for a cold water storage cistern, as well as a hot water cylinder, which is typically located in an airing cupboard. For this reason, we don’t recommend a regular gas boiler for homes with limited space.

On the other hand, regular gas boilers are perfect for homes that require a high demand for hot water and central heating, as the hot water is stored ready for when needed. 

The Energy System 12kW has been designed to be lightweight, meaning that it can be installed neatly into your kitchen cupboard, so you don’t have to worry about your boiler ruining the aesthetics of your kitchen. 

System gas boilers are ideal for homes that require a high demand for heating and hot water. This is because, with a system boiler, the water is supplied directly from the mains. This water is then heated and stored in a hot water storage tank, this hot water will then be sent to your radiators and your taps when needed. It is important to note when purchasing a new or replacement system gas boiler, that you will need the space in your home for the hot water storage tank, therefore, if you have a smaller home with limited space, it may be better to consider a combi boiler. The good news is that the Glow-worm Energy range is also available as a combi boiler, so that option is there for you. 

The Glow-worm Energy System 12kW has a high-efficiency rating of 89.3% and an ErP A-rating for heating, meaning that this boiler could not only potentially help you to reduce your carbon footprint, but could also help lower your energy bills. 

This system gas boiler is the least powerful in its range when it comes to output, with an output of only 12kW. Although this combi boiler is better suited to smaller homes with less demand for heating and hot water, it is still powerful enough to heat a hot with up to 10 radiators and a bathroom. If your home has a higher demand for both central heating and hot water, the Energy System range also has outputs of 15kW, 18kW, 25kW and 30kW. 

With an output of 15kW, this regular gas boiler is one of the least powerful in its range, however, it is powerful enough to heat a home with up to 10 radiators and a bathroom. If you feel that you require a higher demand for heating and hot water, Glow-worm has also designed the Energy Regular 18kW, 25kW, and 30kW. Meanwhile, the 12kW is also available for those with lesser demand. 

It is important to note that when buying a new or replacement regular boiler that you will need to accommodate space in the loft for an additional cold water storage cistern, as well as a hot water cylinder, which is typically located in an airing cupboard. For this reason, we don’t recommend a regular gas boiler for homes with limited space.

On the other hand, regular gas boilers are perfect for homes that require a high demand for hot water and central heating, as the hot water is stored when needed. 

System gas boilers are ideal for homes that have a high demand for heating and hot water. System boilers are supplied with cold water directly from the mains, this water is then heated and stored in a hot water storage tank. This hot water is then sent to your radiators and your taps when needed.

It is important to note when purchasing a new or replacement system gas boiler, that you will need the space in your home for an additional hot water storage tank. If you have a smaller home with limited space, it may be better to consider the Glow-worm Energy combi boiler range.  

The Glow-worm Energy System 15kW has a high-efficiency rating of 89.3% and an ErP A-rating for heating, meaning that this boiler could not only potentially help you to reduce your carbon footprint, but also lower your energy bills. 

With an output of 15kW, this gas system boiler is better suited to smaller homes with less demand for heating and hot water. Nonetheless, this system boiler is still powerful enough to heat a home with up to 10 radiators and a single bathroom. If your home has a higher demand, the Energy System range also has outputs of 18kW, 25kW, and 30kW. The 12kW model is also available for those with lesser demand. 

Regular boilers store heated water in a hot water storage tank ready for when you need it. This additional hot water tank is typically installed in an airing cupboard. However, in order for you to have instant hot water, you will also need to accommodate for an additional cold water storage tank, a feed, and an expansion tank. These would be installed in the attic of your home. For this reason, regular boilers are not recommended for homes where space is limited.

Despite needing these additional tanks, the boiler unit itself has been designed by Glow-worm to be compact and lightweight, with a low-lift weight, meaning installation into a standard kitchen cupboard is quick and simple. 

Thanks to its high-efficiency rating of 89.3% and ErP A-rating for heating and hot water, the Glow-worm Energy 18kW could potentially help you to reduce your carbon footprint and lower your energy bills. 

The Energy 18kW regular boiler has an output of 18kW, perfect for homes with up to 15 radiators and a bathroom. If you feel that your home has a higher demand for hot water and central heating, the Glow-worm Energy 25kW and 30kW are available. Meanwhile, the 12kW and 15kW for smaller homes with lesser demand. 

Thanks to its efficiency rating of 89.3% and an ErP A-rating for central heating, this system boiler could potentially help you to lower your energy costs. The Glow-worm Energy 18kW system boiler has an output that is powerful enough to heat a home with up to 15 radiators and a single bathroom.

If your home requires a higher demand for heating and hot water, the Glow-worm Energy range has the 25kW and 30kW also available. Meanwhile, if your home doesn’t need this output of energy, the 12kW or 15kW could be better suited to your home. 

System gas boilers are ideal for homes that require a high demand for heating and hot water. This is because, with a system boiler, cold water is supplied directly from the mains and then heated and stored in a hot water storage tank. This hot water is then be sent to your radiators and your taps when needed.

However, it is important to note when purchasing a new or replacement system gas boiler, that you will need the space in your home for the hot water storage tank. If you have a smaller home with limited space, it may be better to consider the Glow-worm Energy combi boiler range. 

Combi boilers are often the preferred choice of boiler type, as they combine both central heating and a water heater in one unit, removing the need for any additional cold or hot water storage tanks. The water for a combi boiler is supplied directly from the mains, this water is then heated in the unit and then distributed when and where is needed. As a result of their compact size, combi boilers are perfect for smaller homes with limited space. 

Also, thanks to its high-efficiency rating of 93% and an ErP A-rating for heating and hot water, this Glow-worm Energy Combi boiler could help you to save money on your energy bills. 

With an output of 25kW, this combi boiler is perfect for small to medium-sized homes with up to 15 radiators and one main bathroom. For properties that have a higher demand for heating and hot water, the Energy combi boiler range also has a 30kW and a 35kW output available. 

Regular boilers store heated water in a hot water storage tank which is usually installed in your airing cupboard. When purchasing a new or replacement boiler, you will also need to accommodate space for an additional cold water storage tank, a feed, and an expansion tank. These are typically installed in the attic of a home. For this reason, regular boilers are not recommended for homes with limited space. 

Despite needing these additional tanks, the boiler unit itself has been designed by Glow-worm to be compact and lightweight, with a low-lift weight, meaning installation into a standard kitchen cupboard would be quick and simple. 

Thanks to its high-efficiency rating of 89.2% and ErP A-rating for heating and hot water, the Glow-worm Energy 25kW could potentially help you to reduce your carbon footprint and lower your energy bills. 

The Glow-worm Energy 25kW regular boiler has an output of 25kW, making it perfect for homes with up to 15 radiators and 1 – 2 bathrooms. The Energy 30kW is available for larger homes with even higher demand. Meanwhile, the 12kW, 15kW, and 18kW are also available for homes with lesser demand. The Glow-worm Energy range is also available as a combi boiler for homes where space is limited. If you’re looking for an option that is more energy-efficient, have a look at the Glow Worm Easicom₃ 25kW regular gas boiler, its efficiency rate is 94%. 

Thanks to its efficiency rating of 89.3% and an ErP A-rating for central heating, this system boiler could potentially help you to lower your energy costs. This Glow-worm Energy system boiler has an output of 25kW, which is one of the more powerful boilers of its range, powerful enough to heat a home with up to 15 to 20 radiators and 1-2 bathrooms.

However, if your home requires a higher demand for heating and hot water, the Glow-worm Energy range has a more powerful output of 30kW available. Meanwhile, if your home doesn’t need this output of energy, the 12kW, 15kW or 18kW could be better suited to your home. 

System boilers are ideal for homes that have a high demand for heating and hot water. System boilers heat cold water from the mains supply and store it in a hot water storage tank. This hot water is then ready on demand for when you need it.

It is important to note when purchasing a new or replacement system gas boiler, that you will need the space in your home for the hot water storage tank. If you have a smaller home with limited space, it may be better to consider the Glow-worm Energy combi boiler range. 

Combi boilers are often the preferred choice of boiler type, as they combine both the central heating and the water heater in one unit, removing the need for any additional cold or hot water storage tanks that you would need with a system or regular boiler. A combi boiler is supplied with cold water directly from the mains, this water is then heated in the unit and then distributed when needed, instantly. 

Also, thanks to its high-efficiency rating of 93% and an ErP A-rating for heating and hot water, this Glow-worm Energy combi boiler could help you to save money on your energy bills. 

With an output of 30kW, this combi boiler is perfect for small to medium-sized homes with up to 15 to 20 radiators and 1-2 bathrooms. For properties that have a higher demand for heating and hot water, the Energy range also has a 35kW combi boiler available. Meanwhile, if your home requires a lesser demand, the Energy range has a 25kW combi boiler that is also available. 

The Energy 30 regular boiler has an output of 30kW, which is the most powerful model in its range. However, many homes do not require this output for hot water and central heating. If your home has a lesser demand, the Glow-worm Energy 12kW, 15kW, 18kW and 25kW regular gas boilers are also available.

It is important to note when purchasing a new or replacement regular boiler that you will need to accommodate space in the attic for an additional cold water storage tank, a feed, and an expansion tank that is usually fitted in the attic. You will also need to have a hot water storage tank, that is typically installed in an airing cupboard. For this reason, regular boilers are not recommended for homes with limited space. 

Thanks to its high-efficiency rating of 89.3% and an ErP A-rating for central heating, this system boiler could help you to save some money on your energy bills. The Glow-worm Energy system boiler is also a compact and lightweight unit that can fit in a standard kitchen cupboard with ease, saving space in your home. 

The Glow-worm Energy system boiler is designed and manufactured in the UK, with the most important parts of the hot water and heating system, such as the pump and expansion vessel already built into it. Not only does this make installation easier, but also means you get a faster response to demand for heating and hot water, and you don’t need to have a feed and expansion tank in the loft as you would need for a regular boiler. 

System boilers are great for those homes that have a high demand for both central heating and hot water. Mains water is heated and stored into a separate hot water storage tank. However, this does mean that you will need to have the extra space in your home for an additional tank when purchasing a new or replacement system boiler. For this reason, we don’t recommend them for smaller homes with limited space.

On the plus side, if the Glow-worm Energy range is what you want but you don’t have space in your home, this range is also available as a combi boiler. 

The Energy combi range has 3 boilers, with outputs of 25kW, 30kW and 35kW. As mentioned, this boiler, the 35kW, is the most powerful combi boiler in the range, however, if your home does not require this output for central heating and hot water, the 25kW and 30kW are available and could be better suited to your home. 

Thanks to its high-efficiency rating of 93% and an ErP A-rating for heating and hot water, this Glow-worm Energy 35kW combi boiler could help you to save money on your energy bills. 

Combi boilers are often a preferred choice of boiler type. This is because they combine both central heating and a water heater in one unit, removing the need for any additional cold or hot water storage tanks. The water for a combi boiler is supplied directly from the mains, heated in the unit, and then distributed when needed. As a result of their compact size, combi boilers are perfect for smaller homes with limited space. 

The Energy 35kW Store combi boiler combines the benefits of a system store and combi boiler in one perfect package. The storage water vessels contained within the unit not only save space but also provide large properties with unlimited hot water.

Thanks to its high-efficiency rating of 89.4% and an ErP A-rating for both heating and hot water, this combi boiler can help to reduce your carbon footprint but also help to lower your energy bills. 

With a significantly high output of 35kW, this combi boiler is ideal for larger homes with multiple bathrooms and a higher demand for heating and hot water. This boiler is a high-performance boiler with a powerful 19.7 litres per minute flow rate. This is achieved using shift load technology and a mixing valve supplied with the appliance. For smaller homes with lesser demand for hot water and central heating, we would recommend looking at Glow Worm Betacom4 24kW or 30kW combi gas boilers depending on the size of your home. Alternatively, check out the Glow Worm Compact combi gas boiler range; 24kW and 28kW.