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ATAG Boiler Prices, Reviews & Compare

ATAG has been designing and manufacturing boilers for nearly 70 years. Led by an ambitious research and development team in the Netherlands, the brand take great pride in the energy efficiency and reliability of their boilers.

ATAG manufacture multiple gas-fired combi, regular and system boilers with many also available in LPG for properties that aren’t connected to the gas network. When finding the right ATAG boiler for your home, you’ll need to compare the output rating, efficiency, warranty and potential price.

  • Output rating: It’s essential that your new boiler is of a suitable size to meet the heating and hot water demands of your home. Boiler size is displayed as an output rating, measured in kilowatts (kW), and, simply put, the higher the output rating the more powerful the boiler. ATAG boilers range from output ratings of 15 kW right up to 40 kW making them a great choice for almost any domestic property.
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  • Efficiency: ATAG manufacture gas boilers, a fuel that produces waste gases that must be emitted out of the property through a flue pipe. The efficiency rating shows how much of the fuel is converted into usable energy for the central heating or domestic hot water. Modern ATAG boilers have an ErP Efficiency rating of 94%, making them highly efficient.
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  • Warranty: All ATAG boilers are covered by a 10 year warranty as standard which will see that you’re well covered long after the installation.
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  • Price: ATAG don’t make the prices of their boilers publically available but you can typically expect to pay between £1,000 and £2,500 for a premium boiler.

All ATAG boilers can be found in our Boiler Comparison Tool. While the warranty is the same across all models, our tool is a great way to find a suitable output rating for your home. It’s also a good idea to include your existing boiler as part of the comparison.

Compare ATAG combi boilers

The ATAG Combi boilers have been manufactured to the highest standard using the latest energy efficient technology. They produce boilers for small, medium and large sized homes with a 10 year warranty included as standard. They have some of the most powerful combi boilers on the market with their 40 kW model being suitable for larger properties.

Boiler Model kW Efficiency Warranty Typical Price
ATAG IC Economiser Plus 39kW Combi Gas Boiler 39kw 89.7% 10 years £2,460 VIEW
ATAG IC Economiser Plus 35kW Combi Gas Boiler 35kw 89.7% 10 years £2,380 VIEW
ATAG IC Economiser Plus 27kW Combi Gas Boiler 27kw 89.7% 10 years £2,150 VIEW
ATAG IC36 36kW Combi Gas Boiler 31.2 kw 94% 10 years £N/A VIEW
ATAG IC28 28kW combi Gas Boiler 23.2 kw 94% 10 years £N/A VIEW
ATAG IC24 24kW Combi Gas Boiler 23.2 kw 94% 10 years £N/A VIEW
ATAG IC40 40kW Combi Gas Boiler 31.2 kw 94% 10 years £N/A VIEW

Compare ATAG regular boilers

Regular boilers are best suited to homes that already have the suitable pipework in place which is most likely to be in older properties. In addition to the boiler, a heating system that includes a regular boiler also needs a cold water storage tank in the loft, expansion vessel and hot water cylinder. As ATAG regular boiler models have outputs ranging from 15 kW up to 40 kW they can suit small, medium and large homes.

Boiler Model kW Efficiency Warranty Typical Price
ATAG IR40 40kW Regular Gas Boiler 38.8 kw 94% 10 years £N/A VIEW
ATAG IR32 32kW Regular Gas Boiler 31.2 kw 94% 10 years £1,971 VIEW
ATAG IR24 24kW Regular Gas Boiler 23.2 kw 94% 10 years £1,971 VIEW
ATAG IR18 18kW Regular Gas Boiler 17.5 kw 94% 10 years £N/A VIEW
ATAG IR15 15kW Regular Gas Boiler 14.7 kw 94% 10 years £N/A VIEW

Compare ATAG system boilers

A system boiler is installed as part of a central heating that also includes a hot water cylinder. ATAG system boilers are highly efficient and are available in a range of outputs to suit small homes and larger properties.

Boiler Model kW Efficiency Warranty Typical Price
ATAG IS40 40kW System Gas Boiler 48.8 kw 94% 10 years £N/A VIEW
ATAG IS32 32kW System Gas Boiler 31.2 kw 94% 10 years £N/A VIEW
ATAG IS24 24kW System Gas Boiler 23.2 kw 94% 10 years £N/A VIEW
ATAG IS18 18kW System Gas Boiler 17.5 kw 93% 10 years £N/A VIEW
ATAG IS15 15kW System Gas Boiler 14.7 kw 93% 10 years £N/A VIEW

An ATAG boiler would make a reliable addition to any heating system so if you’re interested in having one installed, you can get free quotes from heating engineers in your area using Boiler Guide.

The ATAG Product Range

ATAG design and manufacture a range of gas boilers including two types of Combi boiler, a System boiler and a Regular boiler, all in a variety of sizes. ATAG also supply a vented and unvented cylinders to be used in conjunction with their system and regular boilers as well as a range of both mechanical and digital controllers.

Benefits of ATAG combi boilers

Atag IC Economiser 39 Combi Gas BoilerThere are two Combi boilers by ATAG: the iC Combination boiler and the iC Economiser Combination boiler. The iC Combination boiler is a compact and highly energy efficient model which is available in a range of sizes to suit any size of home.

  • 40kW: 16.2 litres flow rate per minute. Suitable for large homes with more than one bathroom.
  • 36kW: 14.9 litres flow rate per minute. Suitable for medium to large homes with more than one bathroom.
  • 28kW: 11.5 litres flow rate per minute. Suitable for small and medium homes with one bathroom.
  • 24kW: 10.1 litres flow rate per minute. Suitable for flats or small homes with one bathroom.

The iC Economiser is ATAG’s most recent design which includes their patented Economiser; this technology recycles residual heat that would otherwise be lost as wasted energy and puts it to use, resulting in their most energy efficient boiler to date.

  • 39kW: 17.0 litres flow rate per minute. Suitable for large homes with more than one bathroom.
  • 35kW: 16.1 litres flow rate per minute. Suitable for medium to large homes with more than one bathroom.
  • 27kW: 12.6 litres flow rate per minute. Suitable for small to medium sized homes.

All ATAG iC combination boilers deliver hot water flow rates in litres per minute @ 35°C rise.

  • Compact size of 70 x 44 x 35.5cm makes ATAG combi boilers perfect for smaller homes
  • No need for a hot water cylinder results in more living space
  • No need for a cold water storage tank which frees up space in the loft
  • 94% ERP Seasonal Space Heating Energy Efficiency (A rated)
  • Less pipework makes installation typically cheaper and a reduced chance of frozen pipework
  • LPG conversion kit available
  • User friendly
  • 10 year warranty included as standard
  • Includes unique iCon heat exchanger with a lifetime replacement guarantee and weather compensator
  • Provides hot water on demand directly from the mains

Benefits of ATAG system boilers

A system boiler will heat your hot water for both your heating system and to be stored in a hot water storage cylinder for your taps and showers. The inclusion of the storage cylinder means you keep a backup of hot water which is perfect for homes with a high demand or multiple bathrooms. ATAG recommend their iSteel hot water cylinder for maximum energy efficiency.

ATAG iS system boilers are highly energy efficient and available in a range of outputs: 40kW, 32kW, 24kW, 18kW, 15kW. This means small, medium and large homes will find an appropriate model regardless of hot water demand.

ATAG claim that their system boilers have an edge over most competitors because of the in-built ErP pump. This provides more control over the heat produced by your boiler which improves the energy efficiency of the operation.

  • Compact size for easy installation 70 x 44 x 35.5cm
  • Suitable for homes with multiple bathrooms
  • Hot water supplied evenly to all taps at the same time
  • No risk of pipes or tanks in the loft leaking or freezing
  • Energy efficient for lower fuel bills
  • Built-in components makes installation quicker and neater
  • 10 year warranty included as standard
  • LPG convertible
  • Solar compatible
  • A rated energy efficiency 94%
  • Includes unique iCon heat exchanger with a lifetime replacement guarantee
  • Compatible with the ATAG ONE controller and 3 port valve kit
  • User friendly controls

Benefits of ATAG regular boilers

Rather than replacing an entire heating system you may choose to simply update your Regular boiler with a condensing and highly energy efficient model. This means you will keep the cold water tank in your loft and hot water storage cylinder. iR Regular boilers can be combined with ATAG’s iSteel hot water cylinders for maximum energy efficiency.

ATAG produce the iR Regular boiler in a range of sizes to suit homes of every size and hot water demand: 40kW, 32kW, 24kW, 18kW, 15kW. They offer a wide range of flue options which means you can be flexible about where the boiler is sited.

  • Easily meets a high hot water demand
  • Ideal for homes with two or more bathrooms
  • Ideal for installation in areas where mains water pressure is low
  • Compact size and multiple flue options for flexible installation
  • Straightforward replacement for existing regular systems
  • 10 year warranty included as standard
  • Includes the unique iCon heat exchanger with a lifetime replacement guarantee
  • Completely user friendly
  • 94% A rated energy efficiency
  • Solar compatible
  • LPG convertible

ATAG Boiler Service

It’s important to keep your boiler in the best possible condition with an annual boiler service by a professional engineer. This will ensure the boiler can operate as efficiently as possible, keeping heating bills to a minimum, and that there are no potential safety issues to be concerned about. A boiler service is also a great way to catch and fix small repairs before they have the chance to worsen over time and cause an expensive breakdown. Find out what’s involved in an annual boiler service, why it’s so important, the benefits and how much they cost in ATAG Boiler Service.

ATAG Boiler Warranty

Every boiler manufacturer offers a standard warranty with their boilers which last between 1-10 years. The warranty is your insurance policy and means if a fault develops the manufacturer will resolve it within a specified time frame. Some warranties include both parts and labour while others may only cover parts. The most important thing to remember is to get your boiler serviced by a Gas Safe registered engineer every year as failing to do so is likely to invalidate your warranty. For more detail about this brand’s warranty (including the small print) take a look at ATAG Boiler Warranty.

ATAG Boiler Repair Advice

Even the highest quality boiler can develop faults and problems as they age. Some are minor issues you may be able to handle yourself but most will need a Gas Safe registered engineer to diagnose and repair the problem. To find out if there are any common problems associated with this manufacturer you can read our guide to ATAG Boiler Repairs & Common ATAG Boiler Problems.


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ATAG Error Codes

Error codes may appear on your boiler’s display; it’s your boiler’s way of telling you that something is wrong. Each manufacturer uses a different coding system to help an engineer to diagnose a fault. In some cases it may be a simple issue such as low pressure which you can adjust yourself but more technical faults will certainly need a professional. We’ve put together a list of error codes for all ATAG Boilers to help you understand what’s wrong before you contact an engineer.

ATAG Boiler Controls

ATAG One controller

This thermostat enables you to control the temperature in your home remotely using the ATAG One App on a smart device.

7 day single channel digital wireless programmer and room thermostat

This control comes with a receiver to fit in the front fascia panel and provides on/off time setting periods throughout the day with full temperature control. It is compatible with the iC Economiser Plus combi and iC combination boiler ranges.

24 hour single channel mechanical wireless programmer and room thermostat

This control enables the customer to select their perfect room temperature with multiple on/off settings across a 24-hour period. It is compatible with the iC Economiser Plus combi and iC combination boiler ranges.

24 hour single channel plug-in mechanical programmer

This manual control is compatible with the iC Economiser Plus combi and iC combination boiler ranges and enables multiple on/ off settings across a 24-hour period.

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