Is the Glow Worm Ultimate3 25 a combi, system or regular boiler?

The Glow Worm Ultimate3 25 boiler is an option you may wish to consider if you're looking for a system boiler for your house or flat.

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.

Should I install a Glow Worm Ultimate3 25 system boiler in my house or apartment?

It's best to choose a boiler whose size or "output" is right for your property. With boilers, however, size does not mean how big a boiler is, it means how much power it has.

The output of a boiler is measured in kilowatts and tells you how much power it has available to heat the water it sends to your hot taps, showers and radiators. The greater the demand for hot water in your home, the larger the output you will need.

It is important to select a boiler with the optimal output rate. Choose one with too high an output and your gas bills will be too expensive. Choose one with too low an output and sometimes the water in your radiators and coming out of your taps will be barely lukewarm.

The output of the Glow Worm Ultimate3 25 system is 25 kW kilowatts, so which types of property would this be most suitable for?

To most boiler engineers, the Glow Worm Ultimate3 25 system Ultimate3 would be most suitable for medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.

How big is the Glow Worm Ultimate3 25?

The dimensions of the Glow Worm Ultimate3 25 are TBC mm [H] x TBC mm [W] x TBC mm [D].

Is this Glow Worm boiler condensing or non-condensing?

Condensing gas boilers like the Glow Worm Ultimate3 25 are more energy-efficient and choosing one for your home will cut the amount you pay every year for your gas.

They do this by capturing the heat in water vapour condensation and in exhaust gases which would normally be expelled via the flue. They then recycle that heat, returning it to the system to, among other tasks, reheat colder water that is returning to your boiler from your radiators.

Is the Glow Worm Ultimate3 25 system boiler environmentally friendly?

As more of us are increasingly concerned about climate change, how we heat our homes and its impact on the environment has become an issue of importance to homeowners.

As much as 14% of the UK’s greenhouse gas production derives from our domestic central heating systems. Gas boilers are responsible for dangerous levels of nitrogen dioxide emissions in Britain's largest cities.

If you decide to install a Glow Worm Ultimate3 25 system in your home, will you be helping the environment with your choice? Let’s have a look at the figures.

All new British boilers must perform to a legal minimum energy efficiency of 92% (a low to good SEDBUK "A" rating). Prior to April 2018, the target was 88% (86-90% = SEDBUK "B" and 90%+ = SEDBUK "A").

Efficiency ratings are intended to let consumers know how much energy a boiler uses in its day-to-day activities and how much energy goes to waste.

The Glow Worm Ultimate3 25 was awarded an efficiency rating of 89.7%, equivalent to a SEDBUK grade of "B".

How many years' warranty does the Glow Worm Ultimate3 25 system come with?

The Glow Worm Ultimate3 25 is covered by a parts and labour warranty of 5 years following installation.