ATAG iS Series Matty April 4, 2023
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ATAG BOILERS

ATAG boilers have been manufacturing combi, system, and regular boilers for over 70 years, distributing them all over the world.

The focus with ATAG boilers is on engineering excellence, and with a 4.9 rating on Trustpilot, it seems like their customers feel like they deliver.

ATAG Boilers

ATAG boilers are the most efficient in Europe. They are the boiler choice for the people who know boilers, due to high levels of manufacturing excellence.

You can often tell a premium boiler by how long the guarantee length is, and ATAG’s offer a 10-year guarantee as standard, which increases to a massive 14-year guarantee when purchased through WarmZilla. Offering such long guarantee’s on their boilers means ATAG expect their boilers to go 10-14 years without encountering any issues, and that tells you something.

ATAG is more of a niche brand, they don’t have the notoriety of a Worcester Bosch, but they have been manufacturing boilers for over 70 years. In that time, they have built a reputation for craftsmanship and engineering excellence.

Fitted in each ATAG boiler is an iCon heat exchanger, which maintains 98% of its original efficiency levels throughout its lifetime, helping to lower your energy bills. ATAG heat exchangers come with a lifetime guarantee, which is great because heat exchangers are the most expensive component to replace on a boiler.

ATAG boilers are installed in large commercial buildings, as well as in domestic properties. They are trusted by many to deliver high performance, efficiency, and supreme reliability. This explains why ATAG boilers are the number one boiler choice for professionals such as architects and design engineers.

In addition to winning numerous global awards, UK consumers also rate ATAG the number one boiler manufacturer on independent review site Trustpilot. ATAG has a very impressive 4.9/5 review score, their customers are obviously pleased with their ATAG boilers.

The ATAG Economiser range makes use of the residual heat left in the waste flue gases when the boiler is being used for hot water. This reduces wastage and allows you to reduce your fuel bills to the lowest you can expect with any gas boiler.

Competitors to ATAG would be Worcester Bosch, Viessmann and Vaillant but ATAG do stand out a little from the rest in terms of build quality and boiler life expectancy, but that does come at a slightly higher price tag.

WarmZilla highly recommends ATAG boilers if you’re looking for the pinnacle of boiler design and cost isn’t a factor.

ATAG offers a range of combi, system, and regular boilers. 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 ATAG (or another 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 are proud to offer ATAG boilers for sale on our website, they come with a huge 14-year guarantee when purchased from WarmZilla, Gas Safe installation, any flues or extension kits you require, wireless thermostat, filter, and any other bits and bobs you may require to get your boiler installed.

The ATAG Economiser Plus 27kW combination boiler sold by WarmZilla starts from £2,689 inc. VAT. Which is a great price on such an elite boiler model.

To get a quote on an ATAG boiler take the WarmZilla survey, it only takes a couple of minutes and you’ll have an ATAG boiler quote without having to part with any personal details just by answering some simple questions about your home.

ATAG boiler prices vary depending on the model you choose and the kW output of the model you require.

ATAG boilers sold by WarmZilla come with Gas Safe installation, system filter, system cleanse, inhibitor, wireless thermostat, 10 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 ATAG boiler with all the extras mentioned above, in a few minutes using the WarmZilla online survey.

The reliable ATAG i15S system boiler has an efficiency rating of 93% and an ErP A-rating for central heating, which means it’ll reduce your energy bills.

The boiler’s 15kW output makes it ideal for smaller homes with up to 10 radiators and a single bathroom. 

If your home has more than 10 radiators & multiple bathrooms, we’d advise looking at the ATAG i system range; 18kW24kW32kW, and 40kW.

Although the boiler unit is compact and lightweight, you’ll need to remember that system boilers also need an additional hot water storage cylinder installed alongside the boiler. These are often located in an airing cupboard or similar space in your home, and that’s why system boilers are not ideal for homes with little space.

The ATAG i range is also available as a combi boiler for those with limited space in their homes. 

The ATAG i18S system boiler has an efficiency rating of 93% and an ErP A-rating for central heating, making this a highly reliable boiler that could potentially help you to save money on your current energy bills.

With an output of 18kW, this system boiler is ideal for smaller homes with up to 10 radiators and a single bathroom. For homes with a higher demand for central heating and hot water, the ATAG i system range is also available as a 24kW, 32kW, and 40kW.

Although the boiler unit itself has been designed to be compact and lightweight; it is important to remember that a system boiler also needs an additional hot water storage cylinder installed alongside the boiler. These are often located in an airing cupboard or a similar size space in your home.

For this reason, system boilers are not ideal for homes with little space. On the plus side, the ATAG i range is also available as a combi boiler for those with limited space in their homes. 

The ATAG i24S system boiler is middle of the range when it comes to energy output rating. It has an output of 23.2kW for central heating.

The ATAG i24S system boiler is powerful enough to heat a small to medium-sized home with up to 15 radiators and a single bathroom.

This boiler has an energy efficiency rating of 94%, meaning it can save you money on your energy bills. 

If you have more than 15 radiators & multiple bathrooms, look at the ATAG i system boiler models (32kW 40kW). On the flip side, if your house has less than 15 radiators (meaning it needs less hot water), the 15kW and 18kW system boilers will be your best bet.

Although this boiler unit has been designed to be compact and lightweight, system boilers need additional hot water storage cylinders installed alongside the boiler. The cylinder is often located in an airing cupboard or similar space in your home. That’s why you’ll find that system boilers are not ideal for homes with little space.

The ATAG i range is also available as a combi boiler for those with limited space in their homes. 

The ATAG i32S system boiler is one of the most powerful in its range when it comes to energy output ratings, with an output of 31.2kW for central heating.

This system boiler is powerful enough to heat a small to medium-sized home with up to 15 radiators and 2 bathrooms. 

The ATAG i32S system boiler’s energy efficiency rating (94%) will help lower your heating bills.

If your home has a higher demand for central heating, the ATAG i system boiler range is available in a 40kW option. On the flip side, you can look at the 15kW18kW, and 24kW system models if your home has less than 15 radiators and two bathrooms.

Although the boiler unit has been designed to be compact and lightweight, system boilers need an additional hot water storage cylinder installed alongside the boiler. These storage cylinders are often located in an airing cupboard or similar space in your home. For this reason, system boilers are not ideal for homes with little space.

The ATAG i range is also available as a combi boiler for those with limited spaces.

The i40S gas boiler is the most powerful in the ATAG system range, with an efficiency rating of 94% and an ErP A-rating for heat. This high efficiency rating will help you save money on your energy bills. 

The ATAG i40S gas boiler is ideal for medium to larger-sized homes (20+ radiators and up to 2 bathrooms).

If your home has less than 20 radiators, check out the i15Si18Si24S, and i32S system boilers, as their heating outputs are between 15kW and 32kW.

When purchasing a new or replacement system boiler, it is important to remember that you will need space in your home for an additional hot water storage tank. These are usually located in an airing cupboard or similar-sized space in your home. If you do not have that extra space in your home, a combi boiler would be your best bet.

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