ATAG

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Warranty

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Savings

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Installer

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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

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FAQs

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Support Hub

Support hub

Product manuals

Product manuals

Troubleshooting

Troubleshooting

FAQs

FAQs

ATAG Zone app

ATAG Zone app

ATAG ONE Zone

ATAG ONE Zone

ATAG Cube

ATAG Cube

ATAG Roomstat

ATAG Room Thermostat

TADO v3

TADO v3

Economiser Boiler Image

ECONOMISER

combination boiler

With built-in Passive Flue Gas Heat Recovery, the ATAG Economiser uses heat that would otherwise escape through the flue to preheat your hot water, helping you save up to £68 a year on hot-water bills.

Based on a household using 325 litres of hot water a day and gas at 7.97p per kWh, the Ofgem price cap from 1 October 2026.
Image of the inside of a boiler
ATAG only sells direct to legally qualified installers, keeping the price fair
Key Features
Lifetime guarantee on the heat exchanger
Works great with ONE Zone Controls
Three models available - 27, 35, and 39kW
Lifetime guarantee on the heat exchanger
Fits in a standard kitchen cupboard
Three models available - 27, 35, and 39kW
Works great with ONE Zone Controls
Quiet Mark logo

Quiet Mark awarded

An independent award for quiet appliances
ErP A+ rating icon ErP A+ rating
A+ for heating with ONE Zone controls (A on its own)
Heat recovery technology icon Heat recovery
Catches heat that usually escapes up the flue.
Completely user friendly icon Completely user friendly
With intuitive controls.
Hot water icon Plenty of hot water
Up to 17 litres a minute, depending on the size.

The heat exchanger, guaranteed for life

The heat exchanger is the part that makes the heat, and usually the first to wear out.

Economiser Video Hover View

ATAG's iCON heat exchanger is stainless steel, with a lifetime replacement guarantee

We build with brass and stainless steel, which is why we can offer warranties of up to 18 years

Controls & thermostats

A great choice in control for your heating and hot water

image of a man using an ATAG Room Stat
ATAG OneZone

ONE Zone

Effortless smart heating control for ultimate comfort and reduced home energy bills.

Find out more

ATAG Cube

Cube controller

Straightforward, programmable digital thermostat for simple, reliable, and fuss-free heating control.

Find out more

ATAG Room Stat

Programmable room stat

Classic, user-friendly design with flexible seven-day scheduling for reliable home comfort.

Find out more

ATAG Partner Installers

Gas Safe Register logo
Gas Safe Register logo

ATAG Partner Installers

We only work with Gas Safe Registered installers

Find an installer