Is the Glow Worm Energy 25kW a combi, system or regular boiler?

The Glow Worm Energy 25kW is a gas system boiler.

Ever since system boilers arrived on the market, they have been a popular choice in new homes. In the same way as regular boilers, they work along with a hot water cylinder, which is usually located in an airing cupboard. Since system boilers do not require a separate cold water tank, they appeal to some homeowners, especially if they intend to convert their loft in the future.

Their design includes (often built-in) circulating pumps to send hot water to your taps and radiators. They're also quicker and easier to install because you don't need to find room for and fit a water storage tank.

In addition, system boilers require programming for the flow of heat and hot water, which is not available right away. In any case, the cylinder keeps the water hot for use later, so you shouldn't have to wait for your bath as long as you set your timer and leave it on for long enough to heat sufficient water to use throughout the day.

Is the Glow Worm Energy 25kW system boiler the right choice for my house or apartment?

You should make sure that the boiler you install in your property is the right "size". And, by size, we don't mean how big it is, we mean how powerful it is - the "output".

Your boiler has to be powerful enough to heat all the hot water you need for your radiators and taps. Power is measured in kilowatts and the more kilowatts a boiler has available to it, the more water it can heat.

If the output (measured in kilowatts) is too high, you'll have all the power you need and more but your gas bills will be much higher. If it's too low, you'll often find that the water coming out of your taps and fed into your radiators is only lukewarm.

With the Glow Worm Energy 25kW system's output at 25 kW, which types of property would this Glow worm Energy 25kW System boiler be most appropriate for?

An experienced boiler engineer would recommend that this Glow worm Energy 25kW System boiler would provide adequate heating and hot water for medium-sized homes and larger apartments with up to 10-15 radiators and two bathrooms.

How big is the Glow Worm Energy 25kW?

Glow Worm’s Energy 25kW is 700 mm tall, 390 mm wide, and 280 mm deep.

Is the Glow Worm Energy 25kW condensing or non-condensing?

Condensing boilers convert the warmth present in flue exhaust gases and water vapour condensation into heat which they then recycle to increase the temperature of the colder water returning to your system.

We recommend that homeowners choose a condensing boiler like the Glow Worm Energy 25kW for this reason - the more recent your model the better because the technology improves every year.

You'll benefit from lower quarterly gas bills and condensing boilers are also much more environmentally friendly.

Is the Glow Worm Energy 25kW system boiler an environmentally friendly choice?

More and more homeowners are aware of the importance of how we heat our homes and its impact on climate change and other environmental issues.

Nitrogen dioxide emissions in Britain's largest cities are at dangerous levels and this has been caused by gas boilers. In fact, 14% of the UK’s greenhouse gases are produced by central heating.

Would the environmental impact of installing a Glow Worm Energy 25kW system in your home be positive? Let's look at the numbers.

Boilers manufactured and installed in the UK are assigned energy efficiency ratings following testing to an agreed set of standards. These scores indicate how much energy the boiler uses and how much goes to waste when it's in operation.

By law, boilers must achieve a SEDBUK rating of "A" subject to achieving a minimum of 92% energy efficiency. Prior to April 2018, the minimum was 88% (88% and 89% on the SEDBUK are graded "B" and 90% and above is graded "A").

The Glow Worm Energy 25kW was awarded an efficiency rating of 89.3% with a SEDBUK band rating of "B".

The Energy Related Products Directive (ERP) intends to reduce the amount of energy consumed by individual products over their entire lifetime, from the initial manufacturing process to final disposal and at all points in between.

The legislation is designed to encourage manufacturers to create products that are more environmentally friendly and which result in a reduction in harmful gas emissions.

The ERP rating for the Glow Worm Energy 25kW is "A".

If the Glow Worm Energy 25kW system boiler breaks down, am I covered?

On the Glow Worm Energy 25kW, the manufacturer offers a parts and labour warranty of 2 years.