The ATAG i18S system boiler offers reliable heating for medium to large homes with up to 13 radiators. You'll appreciate its compact size (700x440x355mm) that fits neatly in kitchen cupboards, while enjoying 93% efficiency and an impressive 10-year warranty (extendable to 14 years). Expect to invest £2,000-£3,500 including installation, with the unit itself costing £900-£1,338. The high-grade stainless steel iCon heat exchanger and built-in pump deliver consistent performance that'll keep your home cosy for years to come.
Key Takeaways
- The ATAG I18s System Boiler costs between £900-£1,338 excluding installation, with total installed prices typically ranging from £2,000-£3,500.
- Features 93% efficiency rating and 18kW output, suitable for homes with up to 13 radiators and includes a 10-year standard warranty.
- Compact dimensions of 700x440x355mm make it ideal for kitchen cupboard installation, while maintaining high performance with the iCon heat exchanger.
- ErP A-rated for environmental efficiency, with built-in pump technology and low emissions for quieter, more eco-friendly operation.
- Regular maintenance recommended, with professional servicing available and extensive warranty options up to 14 years with Complete Care Pack.
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ATAG i18S System Boiler Overview
Now that you've got your installation quotes lined up, let's look at what makes the ATAG i18S system boiler a smart choice for your home.
With its compact dimensions of 700mm x 440mm x 355mm, you'll find it fits neatly into most kitchen cupboards without taking up precious space.
The i18S packs quite a punch for its size, delivering 17.5 kW of heating power – enough to comfortably heat homes with up to 13 radiators.
You'll appreciate its impressive 93% efficiency rating, which means lower energy bills for you.
What really sets this boiler apart is its revolutionary iCon heat exchanger, backed by a lifetime replacement guarantee.
Combined with the standard 10-year warranty (extendable to 14 years), you're looking at a reliable heating solution that could serve your home for up to 20 years.
ATAG i18S System Boiler Performance and Efficiency
When it comes to performance, the ATAG i18S system boiler truly shines with its impressive 93% efficiency rating and 18kW output. You'll find it's perfect for homes with up to 10 radiators and a single bathroom, making it an ideal choice for many UK households.
The revolutionary iCon heat exchanger, crafted from high-grade stainless steel, helps maintain peak performance throughout the boiler's lifetime – and it comes with a lifetime replacement guarantee (now that's what we call peace of mind!).
| Feature | Benefit |
|---|---|
| 93% Efficiency | Lower energy bills |
| ErP A-rating | Environmentally friendly |
| Built-in pump | Improved energy control |
| 18kW output | Perfect for 10 radiators |
| Maintains 98% efficiency | Long-term reliability |
You'll especially appreciate how the ErP pump controls help maximise efficiency while keeping those energy bills in check.
ATAG i18S System Boiler Pros and Cons
Diving into the ATAG i18S system boiler's key strengths and limitations will help you determine if it's the right fit for your home.
On the plus side, you'll benefit from its impressive 93% efficiency rating and potential energy bill savings. The compact size means it'll squeeze nicely into your kitchen cupboard, and that warranty of up to 14 years will help you sleep better at night.
However, it's not all smooth sailing. You'll need space for a separate hot water cylinder, and the initial cost might make your wallet wince a bit.
Finding an installer could be tricky too, as ATAG requires specialised partners for installation.
The boiler's LPG compatibility adds flexibility, but if you're a family with high hot water demands, you might want to take into account other options.
How Does The ATAG i18S System Boiler Compare To Similar Models From Other Manufacturers?
While the ATAG i18S system boiler packs impressive features, it's helpful to see how it stacks up against similar 18kW models from major manufacturers like Worcester Bosch, Vaillant, and Ideal.
In terms of efficiency, the ATAG i18S performs slightly lower at 93% compared to its competitors' 94%. However, you'll find it makes up for this with its market-leading 14-year warranty – considerably longer than Worcester Bosch's 10 years, Ideal's 7 years, or Vaillant's 5 years.
- Highest environmental credentials with lowest NOx emissions in its class
- Superior build quality with stainless steel and brass components
- Maintains 98% of original efficiency throughout its lifetime
While you'll pay more upfront for the ATAG i18S, its durability, warranty coverage, and environmental benefits make it a compelling long-term investment.
How Much Does A ATAG i18S System Boiler Cost?
The ATAG i18S system boiler sits in the premium price range, with costs starting from £900 for the unit alone and reaching up to £1,338 before installation.
When you factor in installation costs, which typically range from £500 to £1,500, you're looking at a total investment between £2,000 and £3,500.
A standard installation package usually hovers around £3,300, including the boiler.
Don't forget to budget for essential extras like magnetic filters and flue components, which can add around £300 to your total.
While these costs might make your wallet wince, you'll benefit from ATAG's premium features, including their lifetime guarantee on the iCon heat exchanger and potential energy bill savings thanks to the boiler's impressive 93-94% efficiency rating.
ATAG i18S System Boiler Warranty and Service Support
Savvy homeowners will appreciate ATAG's extensive 12-year standard warranty that comes with the i18S system boiler.
You've got the option to extend this up to 18 years with their Complete Care Pack, making it one of the most thorough coverage plans in the UK market.
Your warranty stays valid as long as you get annual servicing from a Gas Safe registered engineer.
Plus, you'll have access to ATAG's dedicated warranty helpline at 0800 680 0100 for any support needs.
- Full parts and labour coverage throughout the warranty period
- Easy-to-use ATAG ONE controller app for both Apple and Android devices
- Online access to product manuals and troubleshooting guides
Final Verdict
Professional boiler installation experts would confidently recommend the ATAG i18S system boiler for smaller homes needing reliable heating performance.
With its impressive 93% efficiency rating and ErP A-rating, you'll enjoy lower energy bills while keeping your home cosy.
The lifetime guarantee on the iCon heat exchanger gives you peace of mind, while the compact design means it'll fit nicely in your space.
At £1,330-£3,300 installed, it's competitively priced for the features you're getting.
You'll appreciate the user-friendly controls and the smart compatibility with the ATAG ONE Zone controller.
While it's perfect for homes with up to 10 radiators and a single bathroom, you'll need to factor in a separate hot water cylinder for your setup.
Get Up To 3 Free Quotes For Your New Boiler
Before committing to your ATAG i18S installation, you'll want to gather multiple quotes from trusted heating engineers to secure you're getting the best possible deal.
At BoilerChamps, we can connect you with up to three Gas Safe registered installers who'll provide competitive quotes for your new system.
Getting multiple quotes helps you:
- Compare installation costs and warranty options from different professionals
- Ensure you're not paying over the odds for parts or labour
- Find an installer who's experienced with ATAG boilers
You can use our free quote comparison tool to quickly get estimates from vetted local engineers.
They'll assess your property's specific requirements and provide detailed quotes that include all necessary parts and labour.
Don't forget to ask about ongoing maintenance plans.