Ariston Clas ONE prices
An Ariston Clas ONE boiler costs from £750 to £1,100 for the boiler only and from £2,250 to £3,750 with full installation. The total job cost is dependent on the boiler type being removed, the boiler size required and the complexity level of the job.
- The largest capacity Clas ONE combi (38kW) is £350 more than the smallest (24kW)
See our full guide on Ariston boiler prices for all details on the boiler types and ranges they produce
Prices per model
| Clas ONE | Fuel | Output | Average Boiler Only Price | Average Price with installation | Quote |
|---|---|---|---|---|---|
| Combi | Gas | 24kW | £750 | £2,250 | Free Quote |
| Combi | Gas | 30kW | £900 | £2,400 | Free Quote |
| Combi | Gas | 38kW | £1,100 | £2,600 | Free Quote |
Ariston Clas ONE boiler range
Ariston launched it's Clas ONE combi boiler in August 2017 as part of it's ONE range, which is more towards the value end of the spectrum and it is priced accordingly.
- Available in 3 sizes of combi boilers: 24kW (smaller home), 30kW (medium home), 38kW (large home)
- It is still an efficient boiler, with A ErP rating and an efficiency score of 90%. It has the same XtraTechTM stainless steel heat exchanger as the more premium Alteas ONE+ Net but has a lower modulation ratio of 1:7 (vs. 1:10).
- The Auto function also addes to the boilers efficiency; it can self adjust to stop peaks in flow temerature, whcih saves energy.
- The boiler comes with an 8 year warranty as standard, which although is good, it's not a range topping 12 years.
- From a technology angle the Clas ONE is fully compatible with the Ariston Net app (free), which allows the boiler to be controlled remotely.
Key features
- Fuel: Gas
- Boiler type & output (kW):
- Combi 24kW, 30kW, 38kW
- Dimensions (mm): 745 h x 400 w x 385 d
- Solar Compatible: Yes
- ErP Efficiency rating: A (90% efficiency in central heating)
- Which? Best Buy Award: no
- Quiet mark accreditation: 49dB to 52dB
- Guarantee: 8 years
- Flow rate: 10.4 (24kW), 12.5 (30kW), 15.6 (38kW) litres per minute
- Weight: 29.7kg (24kW), 32.3kg (30kW), 33.4kg (38kW)
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