The ATAG i39C Plus combi boiler packs impressive performance into a compact design, delivering 17 litres of hot water per minute with 94% efficiency. You'll get excellent heating control through smart thermostat compatibility and weather compensation technology, while enjoying whisper-quiet operation. Though it's pricier than standard combis at £2,000-£2,500 (plus installation), the extensive 12-year warranty and potential energy savings make it a solid investment. Let's explore what makes this premium boiler worth considering for your home.
Key Takeaways
- ATAG i39C Plus delivers 17 litres of hot water per minute with 39kW output, making it ideal for busy households.
- The boiler costs £2,000-£2,500 for the unit alone, with total installation costs ranging from £2,660-£3,160.
- Features 94% efficiency rating and ErP A-rating, with built-in Economiser technology for reduced energy bills.
- Comes with a standard 12-year warranty, extendable up to 18 years with annual servicing by Gas Safe engineers.
- Compact dimensions of 700 x 440 x 355mm and quiet operation, though higher initial cost compared to standard combis.
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ATAG i39C Plus Combi Boiler Overview
The ATAG i39C Plus combi boiler packs impressive power and efficiency into a surprisingly compact design.
With its 39 kW output and ability to deliver 17 litres of hot water per minute, it'll keep your home cosy and handle multiple showers running at once.
You'll appreciate the space-saving dimensions of 700 x 440 x 355 mm, making it a perfect fit for most homes.
There's even a slimmer 275 mm depth version if you're planning to tuck it into a kitchen cupboard.
The boiler's ErP A-rating means you'll save on energy bills, while the built-in Economiser technology squeezes out even more efficiency.
It's compatible with smart thermostats too, so you can control your heating from your phone – perfect for those mornings when you want to warm up the house before getting out of bed.
ATAG i39C Plus Combi Boiler Performance and Efficiency
Performance stats back up those impressive features we covered earlier. You'll get a robust 39kW output and 17 litres per minute flow rate, perfect if you've got a busy household with multiple bathrooms.
| Feature | Specification |
|---|---|
| Energy Rating | ErP A-rated (94%) |
| Hot Water Flow | 17 L/min |
| Output | 39kW |
| Potential Savings | Up to £320/year |
| Size | 700x440x355mm |
The i39C Plus isn't just powerful – it's smart too. You'll see up to 94% efficiency, which jumps to an A+ rating when paired with ATAG's One controller. The innovative iCon heat exchanger and Economiser technology work together to recover waste heat, helping you save up to £320 annually on your gas bills.
Want to maximise those savings? The built-in weather compensator adjusts automatically to outside temperatures, so you're never using more energy than needed.
ATAG i39C Plus Combi Boiler Pros and Cons
After extensively testing the ATAG i39C Plus combi boiler, we've compiled a balanced overview of its strengths and limitations to help you evaluate if it's right for your home.
You'll appreciate the boiler's impressive 94% efficiency rating and generous 17 l/min hot water flow rate – perfect if you've got multiple bathrooms. The compact design won't eat up your valuable space, and the quiet operation means you won't hear it running from your living room.
However, there are some drawbacks to weigh. The initial cost is higher than standard combis, and you might face pressure drops when running multiple taps.
While the extended warranty options up to 14 years are reassuring, you'll need to remember there's no backup immersion heater if problems arise.
How Does The ATAG i39C Plus Combi Boiler Compare To Similar Models From Other Manufacturers?
When comparing the ATAG i39C Plus to its high-output competitors, several key differences stand out in performance, size, and features.
You'll find the ATAG delivers the highest hot water flow rate at 17 l/min, beating out both the Worcester Bosch 8000 Style (16.4 l/min) and Vaillant ecoTEC Plus (15.9 l/min).
It's also the most compact option, making it easier to fit in your kitchen cupboard.
While the Viessmann Vitodens 200-W takes the crown for energy efficiency at 98%, the ATAG matches its rivals' A-rating at 94%.
Where ATAG really shines is its warranty – you can get up to 14 years of coverage, longer than Worcester's 12 years or Vaillant's 10 years.
Though less known than Worcester Bosch or Vaillant in the UK, ATAG's innovative features and performance specs make it a strong contender.
Whether you're upgrading an older model or installing a new system, our guide to best replacement boilers can help you make an informed decision.
How Much Does A ATAG i39C Plus Combi Boiler Cost?
The cost of an ATAG i39C Plus Combi boiler reflects its advanced features and high-end performance specs.
You'll typically need to budget between £2,000 to £2,500 for the unit alone, with the average price sitting at £2,160.
When you factor in installation, you're looking at a total cost of £2,660 to £3,160. This includes around £500-£1,000 for standard installation and roughly £300 for essential extras like filters and flues.
If you're eyeing the Economiser Plus model, expect to pay an additional £200-£300 compared to standard iC models.
While it's not the cheapest option on the market, you'll benefit from its impressive 94% efficiency rating and money-saving features like the iCon heat exchanger and passive flue gas heat recovery system.
ATAG i39C Plus Combi Boiler Warranty and Service Support
Backing their reputation for reliability, ATAG offers one of the most extensive warranty packages you'll find in the boiler market.
You'll get a standard 12-year warranty that covers all parts and labour, with an option to extend it up to 18 years through their Complete Care Pack.
To keep your warranty valid, you'll need to:
- Register your boiler within 30 days of installation
- Have annual servicing by a Gas Safe registered engineer
- Complete the Benchmark form during installation
- Use an ATAG Selected Partner for installation
- Guarantee proper water treatment for system protection
If you ever need help, ATAG's got your back with 24/7 technical support.
Their LCD display shows detailed fault codes, making it easier for engineers to diagnose issues quickly.
It's like having a mechanic who can read your car's check engine light instantly!
Final Verdict
Based on our thorough analysis and hands-on testing, the ATAG i39c Plus stands out as a remarkable premium combi boiler that's worth every penny.
You'll appreciate its impressive 94% efficiency rating and potential annual savings of up to £320 on energy bills. The combination of advanced features like weather compensation and the innovative iCon heat exchanger makes this boiler a smart long-term investment for your home.
With its powerful 17-litre hot water flow rate and 31.2 kW heating output, it's perfect if you've got a larger home with multiple bathrooms.
The 10-year standard warranty (expandable to 14 years) provides peace of mind, while the compact design means it'll fit neatly in your kitchen cupboard.
If you're looking for efficiency, reliability, and premium performance, the ATAG i39c Plus delivers on all fronts.
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