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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

We have determined a rating of 80.29% for this Ariston CLAS HE SYSTEM EVO 18 System boiler using the PlumbProud quality benchmarking system. Factors used to score a boiler include its energy performance, how much it costs to run, the installation price, and how long the manufacturer's guarantee lasts.

On most non-complicated installations, we would expect this Ariston CLAS HE SYSTEM EVO 18 System boiler to cost £1,700 including installation if you choose PlumbProud to do the work.

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


Installed price around

£1,700

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

Ariston CLAS HE SYSTEM EVO 18 - a combi boiler, system boiler or regular 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 require a hot water cylinder to work (normally stored in an airing or landing cupboard) but, unlike heat only boilers, they do not require a cold water tank. This makes them more suitable for homes that do not have lofts, where attic space is limited or where a loft conversion is being considered.

You program your heating and hot water to come on via the control panel. But if you forget to set the timer, you will have to wait a while for the water to heat up. Hot water is stored in the cylinder for use throughout the day and can be distributed to multiple showers and taps at the same time without a loss of pressure or temperature (something combi boilers really struggle with). For this reason, a system boiler is a suitable option for large families and homes with more than one bathroom.

As no cold-water tank is needed with a system boiler and many major system components are built into it, this type of boiler can be easier to install than a standard boiler.

Is the Ariston CLAS HE SYSTEM EVO 18 system boiler from the CLAS HE SYSTEM EVO range a suitable choice for my house or flat?

It's best to choose a boiler whose size or "output" is right for your home.

The more hot water and heat you want, the higher the output level of your boiler should be. Output is measured in kilowatts and it describes the maximum level of power your boiler has to heat water.

If your output level is too low, your boiler will not have the power it needs to get your water as hot as you want it, particularly when there's a lot of demand for it. Choose a boiler whose output level is too high and you'll have all the hot water you need but will be paying too much for it through higher gas bills.

Which types of property would this Ariston CLAS HE SYSTEM EVO 18 System boiler be appropriate for given its output of 18 kW?

A PlumbProud boiler engineer would recommend that this Ariston CLAS HE SYSTEM EVO 18 System boiler is suitable for smaller homes and apartments with up to 10 radiators and one bathroom.


Ariston CLAS HE SYSTEM EVO 18 dimensions

The Ariston CLAS HE SYSTEM EVO 18 has the following dimensions - TBC mm high, TBC mm wide, and TBC mm deep.

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

We always recommend to clients that they select the very latest condensing boiler for their home.

Condensing boilers like the Ariston CLAS HE SYSTEM EVO 18 are more efficient with the gas they use in operation, meaning that you'll benefit from lower fuel bills. Condensing boilers are also better for the environment.

They achieve their efficiency by capturing and recycling the heat still present in the water vapour condensation and flue exhaust gases created when a boiler burns gas to get the energy it needs. It then reuses that recycled heat to perform a number of tasks, including heating the colder water that comes back to your boiler via the radiator.

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

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.

The power we need for our central heating systems accounts for around 14% of the UK’s greenhouse gas production. There are often dangerous levels of ambient nitrogen dioxide gases in the atmospheres of British cities because of our use of gas boilers.

Would choosing the Ariston CLAS HE SYSTEM EVO 18 system boiler be an environmentally friendly decision? Here's what the figures say.

Boilers manufactured in the UK must be tested and, by law, achieve an energy efficiency rating of 92% or above, equivalent to a SEDBUK "A" grade. Most boilers achieve an "A" rating meaning they are at least 88% efficient.

The energy efficiency of a boiler indicates the amount of energy it uses (and wastes) during operation.

The Ariston CLAS HE SYSTEM EVO 18 has been assigned an efficiency rating of 90.1% with a SEDBUK rating of "A".

Does the Ariston CLAS HE SYSTEM EVO 18 system boiler come with a warranty?

You receive a parts and labour warranty of 5 years with the Ariston CLAS HE SYSTEM EVO 18 boiler.


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%

Combi boilers

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The ideal boiler perfect for the largest homes

System boilers

Ideal for 3+ bedroom, 2+ bathroom homes

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Ariston CLAS HE SYSTEM EVO 18 boiler

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Ariston CLAS HE SYSTEM EVO 18 System Gas boiler

  1. Home
  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.

You should budget approximately £1,700 for the supply and installation of this Ariston CLAS HE SYSTEM EVO 18 System boiler on a standard, non-complicated fit.

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

What type of boiler is Ariston’s CLAS HE SYSTEM EVO 18 - system, regular or combi?

The Ariston CLAS HE SYSTEM EVO 18 is a system boiler you may wish to consider if you want this particular type of boiler for your house or flat.

This type of boiler is better for larger homes and larger families where the demand for water is likely to be higher.

System boilers use a cylinder that draws water from the mains, heats it and then keeps it warm. The cylinder stores a large amount of water, meaning that you should have hot water all day. To be certain of this, make sure that you program your boiler to draw and heat water to meet times when demand is greater, like first thing in the morning before you and your family members go to work or school, and for the evening when everyone gets home.

Unlike heat only boilers, you won't need to find room in your attic for a cold water storage tank - suitable if you don't have an attic, your attic space is very limited, or you are planning an attic conversion in the near future.

Is a Ariston CLAS HE SYSTEM EVO 18 system boiler appropriate for my house or apartment?

You should make sure that the boiler you install in your property is the right "size". And size doesn't mean its physical dimensions, size means how much power it has - the "output".

Your boiler should be able to cope with peak hot water demand in your property and not just your average hot water usage. The output rate of a boiler is measured in kilowatts and tells you how much power a boiler can use to provide hot water to your taps, showers and radiators.

If the output of your boiler is too low, there will often be times when your water isn't as hot as you want. But if your boiler output is too high, it will be more costly to run (often unnecessarily).

The output of the Ariston CLAS HE SYSTEM EVO 18 system boiler is 18 kW kilowatts. Which types of property would this be appropriate for?

An experienced heating engineer would say that this Ariston CLAS HE SYSTEM EVO 18 System boiler's level of output makes it a suitable installation for smaller homes and apartments with up to 10 radiators and one bathroom.


What are the proportions of a Ariston CLAS HE SYSTEM EVO 18 boiler?

Ariston’s CLAS HE SYSTEM EVO 18 is TBC mm tall, TBC mm wide, and TBC mm deep.

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

This Ariston CLAS HE SYSTEM EVO 18 is a condensing gas boiler - we always recommend that clients choose the latest condensing models to benefit from the technology, which continues to improve year after year.

Condensing boilers capture the heat still present in flue exhaust gases and water vapour condensation, processing them through a secondary heat exchanger to, among other tasks, heat colder water returning from your radiators.

By selecting a modern condensing boiler, you'll save money on your gas bills as well as benefitting the wider environment.

How environmentally friendly is the Ariston CLAS HE SYSTEM EVO 18 system?

With more and more of us concerned about environmental issues and climate change, how we heat our homes has become an important issue to many homeowners.

With central heating being responsible for 14% of greenhouse gas emissions in the UK, your choice of boiler matters. Gas boilers are also responsible for the significant atmospheric volumes of dangerous nitrogen dioxide emissions in larger British cities.

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.

An energy efficiency rating of 92% or above is a legal requirement for all boilers manufactured and installed in the UK today. 92% is equivalent to a low-to-middle "A" grade on the "Seasonal Efficiency of Domestic Boilers" (SEDBUK) scale.

Energy efficiency measures how much energy a boiler uses and wastes in the course of its normal operation. The lower the waste, the lower your gas bills.

The Ariston CLAS HE SYSTEM EVO 18 was awarded an efficiency rating of "90.1%", equivalent to a "A" rating on the SEDBUK system.

What warranty do I get if I purchase the Ariston CLAS HE SYSTEM EVO 18 boiler?

You receive a parts and labour warranty of 5 years with the Ariston CLAS HE SYSTEM EVO 18 boiler.


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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