ATAG

Warranty

Warranty

Contact Us

Contact Us

Products

Find your perfect boiler

Find your perfect boiler

iC Economiser combination

iC Economiser combination

iC Combination

iC Combination

iS System

iS System

iR Regular

iR Regular

Smart controls & thermostats

Smart controls & thermostats

Cylinders

Cylinders

Heat pumps

Heat pumps
Coming 2026

Electric boilers

Electric boilers
Coming 2026

Support & Advice

Support Hub

Support Hub

Product manuals

Product manuals

Troubleshooting

Troubleshooting

ATAG Zone app

ATAG Zone app

ATAG ONE Zone

ATAG ONE Zone

ATAG Cube

ATAG Cube

ATAG Roomstat

ATAG Roomstat

TADO v3

TADO v3

FAQs

FAQs

Winter boiler care

Winter boiler care

Radiators

Radiators

3D render of an ATAG branded van outside a house

TERMS AND CONDITIONS

Everything you need to know about your boiler warranty, extended cover, understanding energy ratings, and keeping your heating bills down.

Extended warranty

All our boilers come with a 12 years warranty as standard, which can be extended to 18 years — saving a further £300 on your boiler cover. Based on an 18-year warranty, which includes parts and labour. Prices are based on leading breakdown cover providers.

Save up to £500 on fuel bills per year

Save up to £500 on gas bills when compared to leading competitor combi boiler.

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Boiler + ONE ZONE energy rating

All ATAG boilers - 98% heating efficiency with ATAG ONE Zone 'A+' heat rating can be achieved. An 'A' 94% rating as standard.

Boiler + Cube energy rating

All ATAG boilers - 97% heating efficiency with ATAG Cube 'A' heat rating can be achieved. An 'A' 94% rating as standard.

Boiler + Roomstat energy rating

All ATAG boilers - 96% heating efficiency with ATAG Room Stat 'A' heat rating can be achieved. An 'A' 94% rating as standard.

Boiler warranty terms and conditions

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