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Ariston CLAS HE SYSTEM EVO 18 boiler

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Plumbproud rating

80.29%

Ariston CLAS HE SYSTEM EVO 18 System Gas boiler

This Ariston CLAS HE SYSTEM EVO 18 System boiler has been rated at 80.29%. Our PlumbProud boiler quality rating system uses price installed, energy efficiency, likely running costs, the manufacturer's warranty and other factors to determine the rating we give.

This Ariston CLAS HE SYSTEM EVO 18 System boiler is likely to cost you £1,700 supplied and fully installed through PlumbProud, although there may be additional charges if the fit takes longer than anticipated. You will, however, receive a binding quote from us prior to starting work.

For a free, no-obligation quotation on this Ariston CLAS HE SYSTEM EVO 18 System boiler or for our professional advice on whether the Ariston CLAS HE SYSTEM EVO 18 is suitable for your property, please call 01604 343053, click here to email our team or enter your postcode into the quotation box on this page.


Installed price around

£1,700

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Ariston CLAS HE SYSTEM EVO 18 System Gas boiler frequently asked questions

Is the Ariston CLAS HE SYSTEM EVO 18 a combi, system 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 HE SYSTEM EVO 18.

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 the Ariston CLAS HE SYSTEM EVO 18 system suitable for my house or flat?

Selecting the right boiler for your property means selecting a boiler that is the right size. And, by size, we don't mean how big it is, we mean how powerful it is - the "output".

The output of a boiler is measured in kilowatts. The output level determines the maximum power a boiler can use in heating the water needed for the baths, showers, taps and radiators in your home.

It's important to choose a boiler with an appropriate level of output for your property. Your boiler should be able to cope with periods of peak demand in your property and not just your average usage.

An output rate that is too low will result in an inadequate supply of hot water, while an output that is too high will mean the boiler will cost more to run than is necessary.

The output of the Ariston CLAS HE SYSTEM EVO 18 system is 18 kW kilowatts, so which types of property would this be appropriate for?

Most boiler engineers would recommend that a boiler with this output level would be most suitable for smaller homes and apartments with up to 10 radiators and one bathroom.


What is the size of the Ariston CLAS HE SYSTEM EVO 18?

The Ariston CLAS HE SYSTEM EVO 18 is TBC mm in height, TBC mm in width and TBC mm in depth.

Is the Ariston CLAS HE SYSTEM EVO 18 a condensing or non-condensing boiler?

The Ariston CLAS HE SYSTEM EVO 18 is a condensing gas boiler - we strongly recommend that you choose one of the latest condensing models if possible.

With a condensing boiler, you save money on your gas bills because your boiler captures and recycles the heat present in the flue exhaust gases and water vapour condensation for re-use, meaning they operate far more economically and efficiently.

Is the Ariston CLAS HE SYSTEM EVO 18 system a good choice for the environment?

With environmental issues in the spotlight, more and more homeowners are becoming concerned about how they heat their homes and how much they're contributing towards combatting climate change.

In the UK, central heating systems account for 14% of greenhouse gas production. Gas boilers in particular are responsible for emissions of dangerous nitrogen dioxide in British cities.

Would installing a Ariston CLAS HE SYSTEM EVO 18 system boiler in your home help combat climate change? What do the figures suggest?

By law, the minimum level of energy efficiency for boilers manufactured in the UK is 92%, equivalent to a good SEDBUK “A” rating. Prior to April 2018, the minimum was 88% - boilers whose energy efficiency levels were 88% or 89% were given a "B" rating on the SEDBUK scale and those at 90% or higher were given an "A".

The energy efficiency rating awarded to each boiler indicates the amount of energy that is wasted when in operation.

Following testing, the Ariston CLAS HE SYSTEM EVO 18 was given a 90.1% energy efficiency rating and a SEDBUK grading of "A".

If the Ariston CLAS HE SYSTEM EVO 18 system boiler breaks down, am I covered?

Parts and labour charges incurred during a repair on the Ariston Ariston CLAS HE SYSTEM EVO 18 boiler are covered by a 5 year warranty.


Ariston CLAS HE SYSTEM EVO 18 Gas System boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating90.1%
Band ratingA
LPG Compatible?Yes
P/L Warranty5 Years
Output in kW18 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%

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The ideal boiler perfect for the largest homes

System boilers

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Ariston CLAS HE SYSTEM EVO 18 boiler

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Ariston CLAS HE SYSTEM EVO 18 System Gas boiler

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  2. Ariston CLAS HE SYSTEM EVO 18
Plumbproud rating for this boiler
80.29%

In our PlumbProud quality testing, this Ariston CLAS HE SYSTEM EVO 18 System boiler scores 80.29%. We determine our rating based on a number of different factors including installation costs, manufacturer guarantees, energy efficiency, and operating costs.

Expect this Ariston CLAS HE SYSTEM EVO 18 System boiler to cost you £1,700 fully installed where there are no complications on the fit if you choose PlumbProud for this installation.

If you would like a free quote and professional advice and guidance to help you decide if the Ariston CLAS HE SYSTEM EVO 18 is the right choice for your home, please get in touch. You can do this by entering your postcode in the quote boxes on this page, click here to email us or give us a call on 01604 343053.


Installed price guideline
£1,700

Get your free quote

Ariston CLAS HE SYSTEM EVO 18 Gas System boiler specifications

Powered by GasGas
LocationExternal
Condensing?Yes
Efficiency rating90.1%
Band ratingA
LPG Compatible?Yes
P/L Warranty5 Years
Output in kW18 kW
MountingWall

Ariston CLAS HE SYSTEM EVO 18 System Gas boiler frequently asked questions

Ariston CLAS HE SYSTEM EVO 18 - a system boiler, regular boiler or combi boiler?

The Ariston CLAS HE SYSTEM EVO 18 boiler could be suitable for your house or flat if you are looking for a new system boiler.

System boilers are very popular for properties with limited or no loft space or when homeowners want to keep the space for a loft conversion. This is because, unlike heat only boilers, they don’t require a cold-water tank - however, system boilers do need a hot water cylinder (often installed in an airing or landing cupboard).

Instead of the traditional cold-water tanks, system boilers use their built-in circulating pumps to heat the water needed for your taps and radiators. This also makes them an easier choice for engineers to install as there is one less large component to find space for and fit.

Like a regular boiler, you need to use a control panel to control a system boiler. Set the times when you want central heating and hot water to be available, such as in the morning when there might be greater demand for showers, and it will be there. Although hot water is not available on-demand like with a combi boiler, once the water has been heated it will stay in the hot water cylinder until it’s used up.

Is the Ariston CLAS HE SYSTEM EVO 18 system boiler a suitable choice for my property?

To determine that, we need to consider the size of the boiler. However, size doesn't refer to how big a boiler is - it means the size of its "output".

Your boiler’s output is a measurement of the power it has available to heat the volume of water required for your taps and radiators. The higher the output rate, the more water it can heat.

You need to be careful to select a boiler with the optimal level of output for your property though. That's because, if your boiler output is too low, your water and radiators will often not be as hot as you want them to be. If the output is too high, you’ll be paying more for gas than you need to.

The output of the Ariston CLAS HE SYSTEM EVO 18 system is 18 kW, so which types of property would this Ariston CLAS HE SYSTEM EVO 18 System boiler be appropriate for?

Most Gas Safe boiler installers would recommend that this Ariston CLAS HE SYSTEM EVO 18 System boiler would be suitable for smaller homes and apartments with up to 10 radiators and one bathroom.


Making space for the Ariston CLAS HE SYSTEM EVO 18

The dimensions of the Ariston CLAS HE SYSTEM EVO 18 are TBC mm tall, TBC mm wide, and TBC mm deep.

CLAS HE SYSTEM EVO 18 – non-condensing or condensing?

We strongly recommend that you choose a condensing boiler like the Ariston CLAS HE SYSTEM EVO 18 - 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.

Is the Ariston CLAS HE SYSTEM EVO 18 system a good choice for the environment?

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 the largest cities of Britain, gas boilers are responsible for dangerous levels of atmospheric nitrogen dioxide emissions. In total, 14% of the UK’s greenhouse gases are produced by central heating systems.

Will you be helping the environment if you decide to install a Ariston CLAS HE SYSTEM EVO 18 system in your home? Let’s look at the figures.

In the UK, by law, all boilers manufactured since April 2018 must have a SEDBUK “A” rating and operate to a minimum level of 92% energy efficiency. Prior to this, the minimum was 88% – 88/89% would score a "B" and 90% or more an "A" on the SEDBUK scale.

The energy efficiency rating measures the amount of energy a boiler consumes when it's in use and how much it loses on non-core operations.

Following testing, the Ariston CLAS HE SYSTEM EVO 18 was given an efficiency rating of 90.1% and a SEDBUK grading of "A".

What is the warranty period on a Ariston CLAS HE SYSTEM EVO 18 system boiler?

Ariston offers a parts and labour warranty of 5 years on the Ariston CLAS HE SYSTEM EVO 18.


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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