ATAG Boiler Prices

ATAG Boiler Prices
Stephen Day profile photo

Written by Stephen Day

Gas Safe Engineer

9th October, 2025

With nearly 70, yes 70 years of designing and manufacturing boilers behind them, ATAG can be considered experts in the heating industry, and in this article we will be analysing some of their finest boiler models, including their prices and key features.

Key takeaways

  • ATAG has almost 70 years of experience in producing quality and efficient boilers.
  • ATAG claim their iC combi boiler can save you up to £320 a year on energy bills.
  • The ATAG iS system boiler has uniquely integrated components to offer further space economy
  • Get a new boiler quote, save up to £550 per year (0% APR available).

ATAG Brand-

Originating in the Netherlands almost 7 decades ago, ATAG heating technology continues to deploy the same dedication to crafting top class boilers in terms of performance and reliability.

With a five star ‘Excellent’ rating on Trustpilot from over 4000 reviews, ATAG clearly wants their customers to achieve the highest levels of satisfaction when using their products, living up to their company ethos of ‘a brand you can trust’.

ATAG Boiler Range

iC Combination Boiler Range

Compact and quiet, the IC combi boilers can easily be installed in a standard kitchen cupboard. The iC combi is also extremely efficient and ATAG claim it can save you up to £320 on your gas bills per year.

Key Features

  • Compact design

  • ATAG iCon stainless steel heat exchanger (unique lifetime replacement guarantee)

  • Very low operational volume due to bottom up modulation

  • Built in weather compensation

Available outputs

24kW, 28kW, 36kW, 40kW

Energy efficiency

A - 94%

Flow rate @35°C -  L/min

10.1, 11.5, 14.9, 16.2

Dimensions

440 (w) x 355 (d) x 700mm (h)

Price range (not including installation)- £1,300 - £1,480

check out our handy new boiler cost guide!

iC Economiser Plus Combination Range

Described as the combi of the future, the Economiser range is an upgraded version of the iC combi, containing an economiser that captures waste energy from flue gases and uses it to preheat the mains water production. The resultant savings in heat and water will begin to add up in no time.

Key Features 

  • Default codes displayed on LCD for quicker diagnostics

  • Integrated frost protection

  • A standard boiler casing houses an integrated passive flue gas heat recovery device

Available outputs

27kW, 35kW, 39kW

Energy efficiency

A - 94%

Flow rate @35°C -  L/min

12.6, 16.1, 17

Dimensions

440 (w) x 355 (d) x 700mm (h) 

Price range (not including installation) - £1,950 - £2,160

iS System Boiler Range

Available in a wide range of outputs, this system also contains an integrated ErP pump to control the heat given out by the boiler, ensuring the product is as efficient as possible. The pump and controls are fitted within regular boiler casing offering a space saving solution.

Available outputs

15kW, 18kW, 24kW, 32kW, 40kW

Energy efficiency

A - 93%

Dimensions

440 (w) x 355 (d) x 700mm (h) 

Key Features

  • Fitted ErP-ready pump for low electrical consumption and improved efficiency

  • Fully compatible with solar thermal hot water systems and ATAG iSteel twin coil cylinder range

  • Integrated anti-cycling function

  • Combined condensate outlet and pressure relief valve

Price range (not including installation) - £1,270 - £1,510

iR Regular Boiler Range

The iR heat only or conventional boiler is a robust yet efficient take on the traditional home heating system. With built in frost protection for durability and an overall easiness of use, this premium ‘conventional’ boiler is suited for any type of home.

Available outputs

15kW, 18kW, 24kW, 32kW, 40kW

Energy efficiency

A - 94%

Dimensions

440 (w) x 355 (d) x 700mm (h) 

Key Features

  • Low operational volume due to bottom up modulation

  • Five output models available

  • Compact dimensions

Price Range (not including installation) - £1,150 - £1,390

iHeat

Here at iHeat we stock only the best and most reliable gas boilers for your home, and while we don't currently stock ATAG, our award-winning stable of Alpha, Viessmann, Worcester Bosch, Vaillant and Ideal can heat your home while saving you money.

Need a new boiler?

Get a quote in 60 seconds, fitted as fast as next day!
0% APR finance available.

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9th October, 2025

Stephen Day profile photo

Written by Stephen Day

Gas Safe Engineer at iHeat

Stephen Day is a Gas Safe registered and FGAS certified engineer with over 20 years of hands-on experience in the heating, cooling, and renewable energy industry, specialising in boiler installations, air conditioning, and heat pump systems.

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Articles by Stephen Day are reviewed by iHeat’s technical team to ensure accuracy and reliability.