Ariston Clas One

Ariston sells boilers in over 150 countries worldwide. They’ve been selling boilers in the U.K for 50 years. They must be doing something right to operate for that length of time. Or so you’d think…

Which? gives them a brand score of 50%, which doesn’t inspire confidence in Ariston boilers. If we take a look at Ariston’s Trustpilot profile it’s pretty much the same story with a 2.5 out of 5 average rating. Poor customer service is mentioned a lot, as well as warranties not being fulfilled.

Ariston boilers are kind of pitched at the mid-range, competing with brands like Ideal and Baxi, which are generally both cheaper and more reliable. In fact, for a little bit more money than you’d pay for an Ariston boiler, you could get a Worcester Bosch with better cover, better aftercare and it would generally last longer.

If you’re looking for a reliable mid-range boiler we’d recommend Ideal boilers. Our Ideal boilers come with a massive 8-year guarantee and start from just £1549 for the Ideal Logic range, which is a great price for a mid-range boiler with the reputation and aftercare Ideal offer.

Ariston offers a range of combi, system and regular boilers in a range of kW outputs that would be suitable for small flats to very large homes. However, customers and engineers alike seem to regret purchasing an Ariston boiler on the whole, so whether you’d want to purchase an Ariston boiler is your choice.

If you aren’t sure what boiler type you have, check out our blog, it’s important to know your boiler type before getting any boiler quotes.

Once you know what boiler type you’re looking for, you can use the WarmZilla boiler comparison function below. Just select up to 3 boilers you want to compare and you’ll be able to compare key stats side by side to see which Ariston (or other boiler brand) is best for you.

You can also take the WarmZilla survey, by answering a few simple questions about your home we will be able to recommend suitable boilers for your heating and hot water requirements. You can get a quote on a new boiler in just a few minutes without adding any personal details.

WarmZilla does not sell Ariston boilers, instead, we offer Ideal boilers which we feel occupy the same space in the boiler market but at more reasonable prices and with better aftercare.

Ariston boiler prices vary depending on the model you choose and the kW output of the model you require. The Ariston Clas One combi boiler will cost you around £750 just for the boiler alone without installation and all the extras you get with a WarmZilla boiler. You’d pay the same or slightly less for a similar Baxi boiler.

Boilers sold by WarmZilla come with Gas Safe installation, system filter, system cleanse, inhibitor, wireless thermostat, up to 14 years guarantee, any flues or extension kits you may need; plus, if your condensate or gas pipes require upgrading – that’s included in your fixed price boiler quote too!

You can get a quote now on a new boiler with all the extras mentioned above, in a few minutes using the WarmZilla online survey.

Your Ariston boiler should last you between 10-15 years, however, this depends on how well you maintain your boiler. Over time, your boiler’s efficiency will naturally decline slightly, however, annual servicing and regular maintenance will ensure that your boiler is working as efficiently as possible.

To ensure that your boiler warranty remains valid, your Ariston boiler needs to be serviced annually by a Gas Safe registered installer.

What are the standard checks carried out by a Gas Safe engineer? 

• Water leaks
• External damage to the boiler
• Condition of the electrics
• Evidence of poor-quality installation
• Suitability of boiler controls
• The proximity of combustible materials to the boiler
• Accessibility for repair and servicing
• Signs of overheating

Your Gas Safe engineer should also check that your boiler is operating correctly, that the main components are checked, as well as the burner, heat exchanger, main injector and spark sensor probe. The gas measurements should also be taken to ensure that they are within the correct limits allowed by the manufacturer’s standards.

The boiler tightness will also be checked, to ensure that no gas is able to escape from the boiler. An analysis of the flue gas combustion will also be measured during your boiler service to make sure that your boiler is working to its maximum efficiency.

This model, the 24kW, has an output of 22kW for central heating and 26kW for hot water, making it perfect for smaller homes with up to 15 radiators and a single bathroom.

With an efficiency rating of 90% and an ErP A-rating for central heating and hot water, this combi boiler could potentially help to reduce both your carbon footprint and your energy bills, depending on the efficiency of your current heating system.

Combi boilers can be found in many UK households as they are loved for being great space savers. They combine both the water heater and the central heating element in one nifty unit, making it compact and lightweight. This allows them to be installed neatly inside your standard kitchen cupboard.

As mentioned, the Clas One combi boiler range has to output models with outputs of 18kW, 30kW and 38kW, therefore, if your home has a higher demand for central heating and hot water, there are more powerful options available. 

This model, the 30kW, has an output of 28kW for central heating and 30kW for hot water, making it perfect for smaller homes with up to 15 radiators and multiple bathrooms. 

With an efficiency rating of 90% and an ErP A-rating for central heating and hot water, this combi boiler could potentially help to reduce both your carbon footprint and your energy bills, depending on the efficiency of your current heating system. We also advise checking out the Ariston E-Combi One 30kW Gas Boiler.

Combi boilers can be found in many UK households as they are loved for being great space savers. They combine both the water heater and the central heating element in one nifty unit, making it compact and lightweight. This allows them to be installed neatly inside your standard kitchen cupboard.

As mentioned, the Clas One combi boiler range has three output models with outputs of 24kW, 30kW and the 38kW, therefore, if your home has a lesser or higher demand for central heating and hot water, there are other options available.

With an efficiency rating of 90% and an ErP A-rating for central heating and hot water, this combi boiler could potentially help to reduce both your carbon footprint and your energy bills, depending on the efficiency of your current heating system.

Combi boilers can be found in many UK households as they are loved for being great space savers. Combi boilers combine both the water heater and the central heating element in one nifty unit, making it compact and lightweight. This allows them to be installed neatly inside your standard kitchen cupboard.

As mentioned, the Clas One combi boiler range has three output models with outputs of 24kW, 30kW and 38kW, therefore, if your home has lesser demand for central heating and hot water, there are other options available. 

With an efficiency rating of 90% and an ErP A-rating for central heating and hot water, this system boiler could potentially help to reduce both your carbon footprint and your energy bills, depending on the efficiency of your current heating system.

As mentioned, the Clas One system boiler range has output models of 18kW, 24kW, and 30kW, therefore, if your home has higher demand for central heating and hot water, there are other options available. The Clas One range is also available as a combi boiler for those with limited space in their home.

On the topic of having limited space in your home, although system boilers are great for those that have a demand for instant hot water, they do take up more room in your home. This is because they are installed with a hot water cylinder, which is typically located in an airing cupboard. However, this cylinder allows you to store hot water until you need it, perfect for those who need hot water ‘on tap’ (excuse the pun). 

With an efficiency rating of 90% and an ErP A-rating for central heating and hot water, this system boiler could potentially help to reduce both your carbon footprint and your energy bills, depending on the efficiency of your current heating system.

As mentioned, the Clas One system boiler range has outputs of 18kW, 24kW, and 30kW, therefore, if your home has a higher or lesser demand for central heating and hot water, there are other options available. The Clas One range is also available as a combi boiler for those with limited space in their home.

On the topic of having limited space in your home, although system boilers are great for those that have a high demand for instant hot water, they do take up more room in your home. This is because they are installed with a hot water cylinder, which is typically located in an airing cupboard. However, this cylinder allows you to store hot water until you need it, perfect for those who need hot water ‘on tap’ (excuse the pun). 

With an output of 30kW for central heating, this system boiler is not only the most powerful in its range but also ideal for medium to larger-sized homes with up to 20 radiators and 2 bathrooms. 

With an efficiency rating of 90% and an ErP A-rating for central heating and hot water, this system boiler could potentially help to reduce both your carbon footprint and your energy bills, depending on the efficiency of your current heating system.

As mentioned, the Clas One system boiler range has outputs of 18kW, 24kW, and 30kW, therefore, if your home has a lesser demand for central heating and hot water, there are other options available. The Clas One range is also available as a combi boiler for those with limited space in their home.

On the topic of having limited space in your home, although system boilers are great for those that have a high demand for instant hot water, they do take up more room in your home. This is because they are installed alongside a hot water cylinder, which is typically located in an airing cupboard. However, this cylinder allows you to store hot water until you need it, perfect for those who need hot water ‘on tap’ (excuse the pun). 

With an output of 21kW for central heating and an efficiency rating of 94%, not only could this regular boiler help lower your energy bills, but it is also ideal for homes with moderate demand for central heating, with up to 15 radiators and a single bathroom. However, if you feel that your home has a higher demand for central heating and hot water, the Clas One System Gas Boiler range may be better suited to your home. This boiler range includes 18kW and 24kW.

Regular boilers such as this model are ideal for homes with a high demand for instant hot water. This is thanks to the additional hot and cold water tank, and the feed that is installed alongside your boiler unit. These are usually installed in the attic and airing cupboard of your home.

Although they can be a great option for larger homes, if your home has limited space, then we would recommend either a combi or system boiler.