ATAG Boiler Reviews: Costs, Pros & Cons

If you’re searching for reliable ATAG boiler reviews, you’ve come to the right place. This comprehensive guide explores everything from the brand’s background and popular models to pricing, warranties, and whether an ATAG boiler suits your UK home or rental property as a homeowner or landlord.

ATAG Boiler Reviews: At A Glance

ATAG boilers stand out for their Dutch engineering focus on efficiency and durability, making them a strong option for UK households seeking long-term reliability. Here’s a quick overview of key details in the table below.

Aspect	Details
Founded	1948
Origin	Netherlands (part of Ariston Group)
Awards	Highest-rated boiler brand on Trustpilot (4.9/5 from over 4,500 reviews); 84% customer satisfaction from Which? surveys
Efficiency	Up to 94% (ErP A-rated), with claims of up to £320 annual gas bill savings
Boiler Types	Combi (iC and iC Economiser), System (iS), Regular/Conventional (iR)
Estimated Prices (Supply Only)	£1,150–£2,150 depending on type and model
Guarantee	Standard 12 years, extendable to 18 years with specific add-ons like water treatment and smart controls; lifetime on stainless steel heat exchanger
Pros	High efficiency for lower bills, quiet operation, low NOx emissions for eco-friendliness, robust build for longevity
Cons	Higher upfront costs than budget brands, potentially limited installer network in some UK areas
Maintenance and Servicing	Annual servicing required to maintain guarantee; use Gas Safe engineers; integrated components like ErP pumps simplify upkeep

Who Are ATAG: A Brief Background

ATAG Heating Technology originated in the Netherlands in 1948, initially focusing on high-quality heating solutions for residential and commercial use. Over 75 years, the company has built a reputation for innovative, energy-efficient products, becoming part of the Ariston Group to expand its reach. 

In the UK, ATAG emphasises premium gas boilers designed for reliability in diverse home setups, from compact flats to larger family properties.

Are ATAG Boilers Worth It?

ATAG boilers are worth considering if you prioritise long-term savings and build quality over initial budget constraints. They offer superior efficiency and durability compared to many competitors, potentially reducing your energy bills significantly while providing peace of mind through extended guarantees.

Pros and Cons of ATAG Boilers

Pros:

• Exceptional energy efficiency (up to 94%), helping lower heating costs and carbon footprint.
• Quiet operation, ideal for open-plan homes or noise-sensitive environments.
• Low NOx emissions for better environmental compliance and eco-friendly heating.
• Robust stainless steel components resistant to hard water areas, enhancing longevity.
• Industry-leading guarantees up to 18 years, backed by strong customer feedback.

Cons:

• Higher purchase prices compared to entry-level brands, which may deter cost-focused buyers.
• Smaller UK installer base in remote areas, potentially affecting service availability.

Ready to upgrade? Request a new boiler quote from Boilers 2 Go to explore options tailored to your needs.

How Efficient Are ATAG Boilers?

ATAG boilers are highly efficient, with most models achieving 94% ErP A-rated performance, meaning they convert nearly all fuel into usable heat. Features like the iCon stainless steel heat exchanger maintain efficiency over time, potentially saving up to £320 yearly on gas bills compared to older systems. This makes them a smart choice for reducing energy consumption in UK homes.

ATAG Boiler Range

ATAG offers a focused range of gas boilers tailored to UK properties, including combi, system, and regular (conventional) types. Each is built with premium materials for reliability and efficiency, suiting various home sizes and hot water demands.

ATAG Combi Boiler Range

ATAG’s combi boilers combine heating and hot water in one compact unit, eliminating the need for separate cylinders. The iC series includes models like the i24C, i28C, i36C, and i40C, with outputs from 23.2kW to 31.2kW, ideal for small to medium homes with one or two bathrooms. 

The iC Economiser and Economiser Plus variants add passive flue gas heat recovery for extra efficiency, potentially boosting savings in high-demand setups.

ATAG System Boiler Range

For homes with higher hot water needs, ATAG’s iS system boilers work with an external cylinder. Available in outputs from 14.7kW to 38.8kW, models like the i15S, i24S, i32S, and i40S feature integrated ErP pumps for precise heat control and space-saving installation. 

They’re suited to properties with multiple bathrooms, offering consistent performance without compromising on efficiency.

ATAG Conventional Boiler Range

ATAG’s iR regular (conventional) boilers, also known as heat-only, pair with cylinders and tanks for traditional setups. Outputs range from 14.7kW to 38.8kW in models such as the i15R, i24R, i32R, and i40R, making them versatile for larger or older UK homes with existing systems. Built-in frost protection and easy controls ensure durability in varied conditions.

ATAG Boiler Most Popular Models

ATAG’s most sought-after models balance efficiency, output, and features for typical UK households. These include combi options for quick installation and system/regular for more demanding properties. The table below highlights key specs.

Model	Type	Output (kW)	Efficiency	Key Features
iC27+ Economiser Plus	Combi	23.2–31.2	94%	Passive heat recovery, compact design, low emissions
iC39+ Economiser Plus	Combi	23.2–31.2	94%	High hot water flow, quiet operation, smart control compatible
i32S	System	31.2	94%	Integrated pump, space-saving, suitable for multiple bathrooms
i40R	Regular	38.8	94%	Robust for larger homes, frost protection, easy integration

ATAG Boiler Costs

ATAG boiler costs vary by type and model, typically ranging higher due to premium build quality. Expect supply-only prices starting from £1,150, with installation adding £500–£1,000 depending on complexity. The table outlines estimates for key ranges.

Range/Model	Type	Estimated Supply Cost (£)
iC24–iC40	Combi	1,300–1,500
iC27+–iC39+ Economiser Plus	Combi	1,950–2,150
i15S–i40S	System	1,270–1,510
i15R–i40R	Regular/Conventional	1,150–1,400

ATAG Boiler Accolades and Industry Honours

ATAG has earned recognition for its engineering excellence, including top Trustpilot ratings as the highest-scored boiler manufacturer (4.9/5) and strong Which? survey results with 84% owner satisfaction. Their low-emission designs have also been praised for environmental performance in European standards.

Trustpilot Reviews for ATAG Boilers

Based on over 4,500 Trustpilot reviews, ATAG scores 4.9/5, with users highlighting efficient operation, reliable hot water, and excellent support. Common praises include bill savings and quiet running, though rare complaints mention parts delays. Overall, 90% rate it five stars, outperforming many UK competitors.

ATAG Boiler Guarantee: What You Can Expect

ATAG boiler guarantees in the UK provide robust coverage, starting at 12 years as standard for parts and labour when registered and serviced annually by a Gas Safe engineer. 

Extend to 18 years with add-ons like an Adey filter, water treatment pack, and ONEZone smart controller. The stainless steel heat exchanger carries a lifetime guarantee, ensuring long-term protection for homeowners and landlords.

Are ATAG Boilers Right For You?

ATAG boilers are right for you if you value efficiency and longevity in your heating system. Here’s how to decide based on your needs.

Choose ATAG boilers if…

• You want high efficiency to cut energy bills in a medium to large UK home.
• Long guarantees (up to 18 years) appeal for peace of mind as a landlord or homeowner.
• Low emissions and quiet performance suit your eco-conscious or family lifestyle.
• You’re okay with premium pricing for durable, Dutch-engineered quality.

Don’t choose ATAG boilers if…

• Your budget is tight and you prefer cheaper entry-level options.
• You live in a remote area with limited access to specialised installers.
• Your property has very low heating demands, where a basic model might suffice.

Looking for a New Boiler Quote?

Upgrade your home heating with confidence—request a new boiler quote from Boilers 2 Go today. Our experts can guide you through options, including efficient models like those from ATAG, to find the best fit for your property and budget.

FAQs

How Does ATAG’s iCon Heat Exchanger Improve Performance?

ATAG’s iCon stainless steel heat exchanger retains 98% of its original efficiency throughout its life, resisting corrosion and maximising heat transfer for consistent performance in hard water regions.

What Smart Controls Work Best with ATAG Boilers?

ATAG’s ONEZone app-enabled controller integrates seamlessly, offering remote monitoring, zoning for up to six areas, and up to 12% extra bill savings when paired with combi models.

Can ATAG Boilers Handle High Hot Water Demands in Larger Homes?

Yes, higher-output models like the i40C combi or i40S system deliver flow rates up to 16.7 litres per minute, supporting multiple outlets simultaneously without pressure drops.

How Do ATAG Boilers Compare to Dutch Competitors Like Intergas?

ATAG edges out with lower NOx emissions and longer standard guarantees, though Intergas may offer similar efficiency at slightly lower costs for basic setups.

What Maintenance Tips Extend ATAG Boiler Lifespan?

Beyond annual Gas Safe servicing, flush the system during installation, use magnetic filters to catch debris, and monitor water pressure monthly to prevent issues.