The Ariston Clas One combi boiler offers reliable performance with its XtraTech™ stainless steel heat exchanger and whisper-quiet 49dB operation. You'll get A-rated efficiency (89.4%) and outputs of 24kW, 30kW, or 38kW to suit different home sizes. While prices range from £800-£975 for the unit alone, expect total installation costs between £1,600-£2,150. The 8-year warranty and smart app control are nice perks, though larger households might need a more powerful system. Let's explore if this boiler's features match your needs.
Key Takeaways
- Ariston Clas One Combi Boiler costs between £800-£975 for the unit alone, with total installation costs ranging from £1,600-£2,150.
- The boiler achieves A-rated efficiency with 89.4% seasonal rating and operates quietly at 49dB, comparable to a quiet conversation.
- Available in 24kW, 30kW, and 38kW outputs, featuring XtraTech™ stainless steel heat exchanger and 1:7 modulation ratio for energy management.
- Includes an 8-year warranty on components, though annual servicing is required to maintain coverage.
- The 14.5 l/min flow rate provides strong shower pressure, but performance may be limited in larger households with multiple bathrooms.
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Ariston Clas One Combi Boiler Overview
The Ariston Clas One Combi boiler stands out in today's heating market with its blend of innovative features and practical design.
You'll find it's equipped with a robust XtraTech™ stainless steel heat exchanger and a sophisticated 1:7 modulation ratio that helps keep your energy bills in check.
Available in 24kW, 30kW, and 38kW outputs, this A-rated boiler can meet the heating demands of most homes while operating quietly at just 49dB – that's about as loud as a quiet conversation.
The large backlit display makes controlling your heating a breeze, and you can even manage it through the Ariston Net app.
You'll appreciate the generous 8-year warranty and the easy-access design that makes maintenance simple.
Plus, with its compact dimensions and lightweight build starting at 29kg, installation is straightforward for your heating engineer.
Ariston Clas One Combi Boiler Performance and Efficiency
Building on its impressive feature set, Ariston's Clas One Combi boiler delivers remarkable performance numbers that'll make both your wallet and the environment happy.
You'll appreciate the A-rated efficiency, with a seasonal efficiency rating of 89.4% that helps keep those energy bills in check. The boiler's advanced XtraTech™ heat exchanger and auto-optimisation features work together to maintain efficiency between 90-94%.
| Feature | Benefit |
|---|---|
| 1:7 modulation ratio | Adapts to your heating needs |
| 14.5 l/min flow rate | Strong shower pressure |
| 142% wider waterways | Less likely to get blocked |
| 49dB noise level | Quieter than a conversation |
| Multiple power options | Suits different home sizes |
Whether you're running a hot bath or warming up on a chilly morning, the Clas One's output range of 24-38kW guarantees you've got plenty of power when you need it.
Ariston Clas One Combi Boiler Pros and Cons
When weighing up the Ariston Clas One Combi boiler's strengths and limitations, you'll find it's a bit like choosing between a sports car and a family saloon – there are clear trade-offs to contemplate.
On the plus side, you're getting an A-rated efficiency champion that'll keep your energy bills in check, thanks to its XtraTech stainless steel heat exchanger and smart Auto function. The whisper-quiet operation and generous 8-year warranty are nice bonuses too.
However, it's not all smooth sailing. If you've got a larger household with multiple bathrooms, you might find this boiler struggling to keep up with hot water demand.
You'll also need decent mains pressure for peak performance, and there's no backup immersion heater if things go wrong.
The installation's straightforward for professionals, but you'll need to budget for a higher upfront cost.
How Does The Ariston Clas One Combi Boiler Compare To Similar Models From Other Manufacturers?
Now that you understand the key features of the Ariston Clas One, let's stack it up against its market rivals.
When compared to Worcester Bosch, the Ariston Clas One mightn't match their legendary quiet operation, but it's definitely no noisemaker at 49dB. You'll find it's often more budget-friendly than Worcester while still delivering solid performance.
Looking at Baxi's offerings, the Ariston Clas One pulls ahead with its generous 8-year warranty – that's peace of mind you can't ignore.
And while Vaillant boilers match the Ariston's efficiency ratings, you'll typically save some cash by choosing the Clas One.
The Ariston sits comfortably in the middle ground – it's not the most premium option out there, but it offers excellent value with features that rival more expensive brands.
For a deeper understanding of how different boiler brands stack up, our boiler comparison guide covers all the essential factors to consider when making your choice.
How Much Does A Ariston Clas One Combi Boiler Cost?
Looking to budget for an Ariston Clas One combi boiler?
You'll find the unit-only prices range from £800 for the 24kW model to £975 for the larger 38kW version, with the 30kW model sitting at £850.
But don't forget about installation costs – they'll add another £500-£1,000 to your total.
You'll also need to factor in around £300 for essentials like the magnetic filter and flue system.
All in, you're looking at a complete installation cost between £1,600 and £2,150, depending on your specific needs.
While that might seem like a chunk of change, you'll get good value with the Clas One's A-rated efficiency and 8-year warranty.
Plus, those energy savings will help offset the initial investment over time.
Ariston Clas One Combi Boiler Warranty and Service Support
The Ariston Clas One comes with solid warranty protection for your peace of mind.
You'll get 8 years of coverage on boiler components, though external parts aren't included.
To activate your warranty, you'll need to register your boiler within 30 days of installation at www.ariston.co.uk.
Don't forget – only Gas Safe registered engineers can install it, or you'll void that valuable coverage.
Here's what you need to know about maintaining your warranty:
- Annual servicing is mandatory
- Services must be done by Gas Safe engineers
- You'll need to keep proof of all services
- You can book directly with Ariston at 0333 240 8777
If you need support, Ariston's customer service team is available weekdays from 9am to 6pm.
They offer both remote diagnostics and connections to local engineers when needed.
Final Verdict
After thoroughly evaluating the Ariston Clas One combi boiler's features and performance, we can confidently say it's a solid mid-range option that delivers impressive value.
You'll appreciate its 90% efficiency rating and smart auto function that helps reduce energy bills. The XtraTech heat exchanger and 1:7 modulation ratio guarantee reliable performance for years to come.
With prices starting at £800 and a generous 8-year warranty, you're getting excellent bang for your buck. The lightweight design and front access to components make installation and maintenance hassle-free.
Whether you choose the 24kW model for your cosy flat or the 38kW version for your larger home, you'll enjoy consistent heating and hot water.
Plus, it's as quiet as your fridge – so you won't even know it's there!
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