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iC Economiser Plus Combination Boilers

Every ATAG boiler carries a 12-year warranty as standard with options up to 18 years, and they’re professionally installed by our ATAG Selected Partners.

The ultimate in domestic efficiency.

Our revolutionary iC Economiser Plus boiler has been described as the combi of the future because it contains an industry-leading innovation, our patented Economiser Plus.

Some years ago, ATAG’s design engineers realised there was untapped residual heat left in the waste flue gases when the boiler was being used for hot water. So they set upon harnessing the wasted energy and the ATAG Economiser was born.

It works by capturing waste energy from the flue gases and uses it to pre-heat the mains water to improve hot water production efficiency, saving both heat and money in the process.

Why not pair the ATAG iC Economiser Plus combination boiler with the ATAG ONEZone smart controller to achieve a maximum A+Energy Related Products rating.

Key features and benefits

Specifications

i27C Plus
i35C Plus
i39C Plus

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Part Number

BE200327

ERP SEASONAL SPACE HEATING ENERGY EFFICIENCY CLASS

A

ERP SEASONAL SPACE HEATING ENERGY EFFICIENCY (%)

94

ERP WATER HEATING ENERGY EFFICIENCY CLASS

A

ERP WATER HEATING ENERGY EFFICIENCY (%)

94

ERP DECLARED LOAD PROFILE

XXL

DHW INPUT KW

29.8

CH OUTPUT KW

23.2

FLOW RATE @ 35°C RISE L/MIN

12.6

SEDBUK 2009 (%)

89.7

DIMENSIONS (H X W X D) MM

700X440X355

BOILER LIFT WEIGHT WITH JIG KG

43

STANDARD WARRANTY (YEARS)

12

EXTENDED WARRANTY (YEARS)

Up to 18 Years

LPG CONVERSION KIT AVAILABLE

Yes

NOX CLASS

6

INGRESS PROTECTION (IP)

IPX4D

MAXIMUM EQUIVALENT HORIZONTAL FLUE LENGTH (M) 60/100MM

15

MAXIMUM EQUIVALENT VERTICAL FLUE LENGTH (M) 60/100MM

15

MAXIMUM EQUIVALENT HORIZONTAL FLUE LENGTH (M) 80/125MM

50

MAXIMUM EQUIVALENT VERTICAL FLUE LENGTH (M) 80/125MM

50

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Part Number

BE200335

ERP SEASONAL SPACE HEATING ENERGY EFFICIENCY CLASS

A

ERP SEASONAL SPACE HEATING ENERGY EFFICIENCY (%)

94

ERP WATER HEATING ENERGY EFFICIENCY CLASS

A

ERP WATER HEATING ENERGY EFFICIENCY (%)

94

ERP DECLARED LOAD PROFILE

XXL

DHW INPUT KW

40.3

CH OUTPUT KW

31.2

FLOW RATE @ 35°C RISE L/MIN

16.1

SEDBUK 2009 (%)

89.7

DIMENSIONS (H X W X D) MM

700X440X355

BOILER LIFT WEIGHT WITH JIG KG

46

STANDARD WARRANTY (YEARS)

12

EXTENDED WARRANTY (YEARS)

Up to 18 Years

LPG CONVERSION KIT AVAILABLE

Yes

NOX CLASS

6

INGRESS PROTECTION (IP)

IPX4D

MAXIMUM EQUIVALENT HORIZONTAL FLUE LENGTH (M) 60/100MM

8

MAXIMUM EQUIVALENT VERTICAL FLUE LENGTH (M) 60/100MM

8

MAXIMUM EQUIVALENT HORIZONTAL FLUE LENGTH (M) 80/125MM

40

MAXIMUM EQUIVALENT VERTICAL FLUE LENGTH (M) 80/125MM

40

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Part Number

BE200339

ERP SEASONAL SPACE HEATING ENERGY EFFICIENCY CLASS

A

ERP SEASONAL SPACE HEATING ENERGY EFFICIENCY (%)

94

ERP WATER HEATING ENERGY EFFICIENCY CLASS

A

ERP WATER HEATING ENERGY EFFICIENCY (%)

96

ERP DECLARED LOAD PROFILE

XXL

DHW INPUT KW

42.5

CH OUTPUT KW

31.2

FLOW RATE @ 35°C RISE L/MIN

17

SEDBUK 2009 (%)

89.7

DIMENSIONS (H X W X D) MM

700X440X355

BOILER LIFT WEIGHT WITH JIG KG

46

STANDARD WARRANTY (YEARS)

12

EXTENDED WARRANTY (YEARS)

Up to 18 Years

LPG CONVERSION KIT AVAILABLE

Yes

NOX CLASS

6

INGRESS PROTECTION (IP)

IPX4D

MAXIMUM EQUIVALENT HORIZONTAL FLUE LENGTH (M) 60/100MM

8

MAXIMUM EQUIVALENT VERTICAL FLUE LENGTH (M) 60/100MM

8

MAXIMUM EQUIVALENT HORIZONTAL FLUE LENGTH (M) 80/125MM

40

MAXIMUM EQUIVALENT VERTICAL FLUE LENGTH (M) 80/125MM

40

3

OneZone

Control the temperature in your home remotely using the ATAG One Zone App, available for FREE on the App Store or Google Play.

OneZone Smart Controller
2

Cylinders

Need replacement cylinders? Check out our range to see which one your boiler requires.

View all Cyclinders
3

Complete Care

Ask your ATAG installer about the complete care pack, including the ONEZone smart controller, to increase your standard warranty from 12 to 18 years.

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Installers that you can depend on

From design through to installation and after-care service, our ATAG selected gas-safe installers are on hand to offer you excellent advice and the best solution possible that suits your needs.

Find an Installer