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Ariston CLAS SYSTEM ONE 24 boiler

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Plumbproud rating

80.67%

Ariston CLAS SYSTEM ONE 24 System Gas boiler

Our PlumbProud quality scoring system uses many different factors, such as price installed, manufacturer guarantees, energy efficiency and the likely cost of running, among others, to determine a boiler's value for money rating. This Ariston CLAS SYSTEM ONE 24 System boiler scores 80.67%.

£1,900 is the amount you should budget to have this particular boiler installed on a straightforward installation.

To get a free quote for the installation of the Ariston CLAS SYSTEM ONE 24 boiler in your home, simply enter your postcode in the box provided on this page. You can also find out whether this is the right boiler for your home by clicking to email our installation team or by calling us on 01604 343053.


Installed price around

£1,900

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Ariston CLAS SYSTEM ONE 24 System Gas boiler frequently asked questions

Ariston CLAS SYSTEM ONE 24 - a combi boiler, system boiler or regular boiler?

If you’re looking for a system boiler for your house or flat, you may wish to the consider the Ariston CLAS SYSTEM ONE 24.

System boilers are suitable for larger homes where there is a higher-than-average demand for hot water and heating.

Through their use of a hot water cylinder, they provide hot water on demand during the day - as long as there's enough water left in the cylinder. Just let the boiler know when you want hot water for your radiators and taps via the programming panel and, subject to tank size and household usage, it'll be there for you.

Unlike heat only boilers, there is no requirement to find room in the attic for a cold water storage tank. System boilers are therefore quicker, easier and cheaper to install.

Is a Ariston CLAS SYSTEM ONE 24 system boiler suitable for my house or flat?

Whether this Ariston CLAS SYSTEM ONE 24 System boiler is right for where you live depends on its size or what its "output" level is. Size does not mean its physical dimensions, however - it means how powerful it is.

The output of a boiler is measured in kilowatts and indicates how much energy it can use to heat the water needed for your radiators, taps and showers. The greater the output, the more water it can heat.

A boiler whose output is too high will give you hot water and warm radiators but also higher gas bills, whereas a boiler whose output is too low will result in cheaper gas bills but the water might not always be as hot as you want it to be.

The output of the Ariston CLAS SYSTEM ONE 24 system is 24 kW, so which types of property would this model be appropriate for?

An experienced PlumbProud heating engineer would recommend that the most suitable type of property for a Ariston CLAS SYSTEM ONE 24 system would be medium-sized homes and larger apartments containing 10-15 radiators and providing hot water for two bathrooms.


What dimensions does a Ariston CLAS SYSTEM ONE 24 have?

The Ariston CLAS SYSTEM ONE 24 stands at TBC mm tall, TBC mm wide and TBC mm deep.

Is the Ariston CLAS SYSTEM ONE 24 non-condensing or condensing?

We strongly recommend that you choose a condensing boiler like the Ariston CLAS SYSTEM ONE 24 - the technology is improving every year so the newer the boiler, the better.

A condensing boiler captures and recycles the warmth still present in flue exhaust gases and water vapour condensation into heat, allowing it to perform more efficiently on tasks like heating the colder water returning from your radiators.

They also offer significant annual savings on household gas bills as well as being more environmentally friendly.

How energy efficient is the Ariston CLAS SYSTEM ONE 24 system boiler?

The effects of climate change on the environment are leading many homeowners to question the damage they might be doing by the way they heat their homes.

In Britain's bigger cities, gas boilers, in particular, are responsible for dangerous levels of nitrogen dioxide emissions. Overall, 14% of all of the UK’s greenhouse gas production comes from heating our homes.

Would choosing the Ariston CLAS SYSTEM ONE 24 system be an environmentally-friendly choice? If so, let's look at its performance figures.

Every boiler manufactured and supplied in the UK must have an energy efficiency rating of 92% (SEDBUK “A” rating). These minimums were made law in April 2018 - before that, the minimum energy efficiency rating was 88% (88%/89% = "B" SEDBUK grade, 90%+ = "A" SEDBUK grade).

The Ariston CLAS SYSTEM ONE 24 was awarded an efficiency rating of 90% and a band rating of "A".

Energy efficiency ratings for boilers describe the amount of energy they use and waste when switched on and working.

What is the warranty period for the Ariston CLAS SYSTEM ONE 24?

Ariston’s CLAS SYSTEM ONE 24 boiler includes a parts and labour warranty of 8 years.


Ariston CLAS SYSTEM ONE 24 Gas System boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating90%
Band ratingA
LPG Compatible?Yes
P/L Warranty8 Years
Output in kW24 kW
MountingWall

The top 10 rated Gas System boilers

Using the Plumbproud scoring system, the current 10 ten Gas System boilers assessed using a number of important variables are as follows:

1Vaillant ecoTEC Plus 61295.72%
2Vaillant ecoTEC Plus 61595.20%
3Vaillant ecoTEC Plus 61894.37%
4Vaillant ecoTEC Plus 62493.33%
5Worcester Bosch Greenstar i System 9i92.89%
6Vaillant ecoTEC Plus 63092.75%
7Worcester Bosch Greenstar 4000 12kW92.50%
8Vaillant ecoTEC Exclusive IQ 62792.42%
9Vaillant ecoFIT Pure 61292.38%
10Vaillant ecoFIT Pure 61592.36%

Combi boilers

Choose from the UK’s biggest range of combis

Heat only boilers

The ideal boiler perfect for the largest homes

System boilers

Ideal for 3+ bedroom, 2+ bathroom homes

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Ariston CLAS SYSTEM ONE 24 boiler

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Ariston CLAS SYSTEM ONE 24 System Gas boiler

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  2. Ariston CLAS SYSTEM ONE 24
Plumbproud rating for this boiler
80.67%

Assessing factors including the system's running costs, its energy efficiency, the manufacturer’s guarantee, and its likely installed price, we scored this Ariston CLAS SYSTEM ONE 24 System boiler 80.67% on our internal PlumbProud grading system.

We estimate that, on a standard, non-complicated installation, the supply and fitting charge for this Ariston CLAS SYSTEM ONE 24 System boiler will be around £1,900.

Get a better understanding of installation costs for the Ariston CLAS SYSTEM ONE 24 by entering your postcode in the box supplied on this page. You can also call our professional team with any boiler-related queries on 01604 343053. Alternatively, please click here to email us.


Installed price guideline
£1,900

Get your free quote

Ariston CLAS SYSTEM ONE 24 Gas System boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating90%
Band ratingA
LPG Compatible?Yes
P/L Warranty8 Years
Output in kW24 kW
MountingWall

Ariston CLAS SYSTEM ONE 24 System Gas boiler frequently asked questions

Ariston CLAS SYSTEM ONE 24 - a system boiler, regular boiler or combi boiler?

If you want a system boiler for your flat or house, the Ariston CLAS SYSTEM ONE 24 might be an option for you to consider.

A system boiler needs a hot water cylinder to work but it does not require a cold water tank, unlike with heat only boilers. This makes system boilers suitable for properties that lack loft space (or have no loft at all) or where a loft conversion is planned. The cylinder stores hot water for use throughout the day and water can be distributed to more than one tap or shower simultaneously without a loss of pressure or temperature (something combi boilers really struggle with).

System boilers are generally found in larger homes or properties housing large families. System boilers are easier to install than heat only boilers because their major components, including the circulation pump, are built-in and, of course, no cold water tank is needed.

With a system boiler, you use the control panel to set times for when you want the heating and hot water to be available but, unlike combi boilers, they cannot deliver hot water instantly. If you don't set your timer, you will have to wait for the water to heat up.

Is the Ariston CLAS SYSTEM ONE 24 system boiler suitable 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 Ariston CLAS SYSTEM ONE 24 system's output at 24 kW, which types of property would this Ariston CLAS SYSTEM ONE 24 System boiler be most appropriate for?

Most experienced heating engineers would suggest that the most suitable type of property for installing a Ariston CLAS SYSTEM ONE 24 system boiler in would be medium-sized homes and larger apartments with 10-15 radiators and two bathrooms.


What is the size of the Ariston CLAS SYSTEM ONE 24?

The Ariston CLAS SYSTEM ONE 24 boiler is TBC mm high, TBC mm wide, and TBC mm deep.

Ariston CLAS SYSTEM ONE 24 – condensing or non-condensing?

The Ariston CLAS SYSTEM ONE 24 is a condensing gas boiler - we’d strongly recommend that you choose the very latest condensing model for your home.

Condensing boilers run on either gas or oil and are manufactured specifically to improve energy efficiency. They do this by capturing and recycling the warmth present in flue exhaust gases and water vapour condensation into more usable heat the system can use, meaning they're far more efficient and cost less to run.

How does the Ariston CLAS SYSTEM ONE 24 system rate environmentally?

Price and performance are two important issues when choosing a boiler but now, for many people in the UK, so is the environmental impact of how we heat our homes and its effect on climate change.

Around 14% of the greenhouse gases produced in the UK is a result of our central heating systems. Gas boilers are responsible for dangerous levels of nitrogen dioxide emissions in some of our largest cities.

Will choosing to install a Ariston CLAS SYSTEM ONE 24 system in your home help the environment? Let's review the figures.

The Ariston CLAS SYSTEM ONE 24 has been awarded an efficiency rating of 90% and a SEDBUK band rating of "A".

In the UK, all boilers manufactured and supplied must have an energy efficiency rating of at least 92% or a SEDBUK "A" grade. Until April 2018, the minimum rating was 88% (88% and 89% are equivalent to a SEDBUK "B" rating and anything higher is rated "A").

A boiler's energy efficiency rating describes the amount of energy it uses and wastes when in normal operation.

What warranty do I get if I purchase the Ariston CLAS SYSTEM ONE 24 boiler?

The parts and labour warranty on the Ariston CLAS SYSTEM ONE 24 covers all repair-related costs for 8 years while the heat exchange warranty covers you for [Heat Exchange Warranty] years.


The top 10 rated Gas System boilers

Using the Plumbproud scoring system, the current 10 ten Gas System boilers assessed using a number of important variables are as follows:

1Vaillant ecoTEC Plus 61295.72%
2Vaillant ecoTEC Plus 61595.20%
3Vaillant ecoTEC Plus 61894.37%
4Vaillant ecoTEC Plus 62493.33%
5Worcester Bosch Greenstar i System 9i92.89%
6Vaillant ecoTEC Plus 63092.75%
7Worcester Bosch Greenstar 4000 12kW92.50%
8Vaillant ecoTEC Exclusive IQ 62792.42%
9Vaillant ecoFIT Pure 61292.38%
10Vaillant ecoFIT Pure 61592.36%
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