Ariston Clas ONE 35

  • THE BOILER BOASTS THE NEW XTRATECH HEAT EXCHANGER FROM ARISTON AND WITH QUIET OPERATION AND A HIGH EFFICIENCY PUMP IT’S THE MOST ENERGY EFFICIENT CLAS.. The new Xtratech™ heat exchanger from Ariston is able to perform better and more efficiently than ever before: With a single coil design and 142% wider waterways it is more reliable with reduced pressure drops and less chance of blockages/obstructions. Performance is increased by having an improved condensing surface whilst being easy to remove, clean and maintain. Having been tested and certified by TUV Rheinland you can count on Ariston for safety, quality and usability.
  • Installation and Maintenance ​Lightweight and easy to install With weights starting from just 28.5kg, it is easy to hang this boiler on the wall, while installation is straightforward, thanks to the simple to fit connections, wiring and flue.Extra space There is more room inside for engineers to work on the boiler, aiding installation, commissioning, servicing and repair, with easy frontal access to all components.Robust The boiler benefits from a strong and durable chassis, with no sharp edges. Colour coded Installing accessories is made even more straightforward thanks to the unique coding system where parts will only fit in the slots of a matching colour. Ariston branded components Major components are now Ariston branded for complete confidence in quality. Accept no imitations! Upgrade existing Ariston boilers Fully compatible with Ariston’s current range of accessories, the new boiler also has all connections in the same places – enabling an easy retrofit in place of an existing Ariston boiler. Usability and Controllability ​Quieter running A new and improved silencer and the latest soundproofing technology ensure this boiler range is the quietest Ariston has ever produced, with noise levels at 49-52dB across the range. These levels are similar to those of a domestic fridge freezer. Easy to set up Low voltage connections, colour coded wiring and a well-designed circuit board ensure it is easy to set up and pair the boiler with the latest Ariston controls. Easy to use A clear display panel with intuitive buttons and stunning fascia has been designed with ease of use in mind.Full range of controls Ariston’s latest wired and wireless controls are easy to operate, offering end users energy management tips, alongside modern styling. Zoning Full zone management kits are available, with the latest Ariston controls capable of managing up to six separate heating zones.
Manufacturer ARISTON
Contact Details LLC "Aiston Thermo Ukraine", 86e, Bozchenka Str., Kyiv, 03680, Ukraine, tel.: +38 (044) 496 25 18,
Manufacture Product Details
Technology gas condensing boiler
Max Capacity in kW 35.0
Min Capacity in kW 10.5
Efficiency in % 108.0

Annual savings
Annual savings: UAH 7,000 / 5,700 kWh*

Annual energy baseline for heating 39,722kWh/a

Annual energy after replacement Ariston Clas ONE 35

Your annual savings


1. Inclusion of the technologies, equipment and materials in the Technology Selector is based solely on qualification under IQ energy’s ‘Minimum Energy Performance Standards’** and does not constitute an endorsement of the producers or suppliers of these products by the EBRD. Although every effort has been made to present correct and up to date data, EBRD does not accept responsibility for the accuracy of the data presented.

**Included technologies ‎have been assessed to result in at least a 20% higher energy performance than the market average

2. The savings are calculated for the refurbishment of an average dwelling or the replacement of an average equipment in Ukraine. The actual savings of individual refurbishment projects/equipment can differ from the indicated savings due to specific climatic conditions, size of the dwelling/equipment, consumer behaviour, etc. The displayed energy efficiency measures only have an impact on individual household's bills (savings) if there is consumption based billing available.

3. Even though we have taken reasonable care to apply up-to-date energy prices when calculating savings in UAH, we do not take responsibility for the accuracy of any savings estimates stated on this Site.

4. All prices displayed in our Technology Selector are provided by the suppliers as indicative retail prices and should be used for reference purposes only. The actual prices of the vendors/retailors can be different from those on our web site due to various reasons beyond the influence of IQ energy programme. IQ energy programme does not bear any liability for the price information of any specific product. Please, check with suppliers actual prices for products and technologies you are interested in.