Bosch Series 8 WNC254ARGB i-DOS 10.5/6kg
Best for: Families wanting auto-dosing and app · Upper mid-range
A big-drum washer dryer with i-DOS dosing, app control and a quiet class A spin.
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Pros
- 10.5 kg wash drum, 6 kg wash-and-dry
- i-DOS automatic dosing
- Wash & Dry 45 for small loads
- AquaStop leak protection
Cons
- Wash-and-dry energy class D, like most washer dryers
- Bosch's own shop showed it unavailable
- Programme list not published in full
Bosch's Series 8 WNC254ARGB is the washer dryer for a busy household. Bosch UK lists a 10.5 kg washing load and 6 kg in one continuous wash-and-dry cycle, energy class D for the full wash-and-dry label (the washing part alone is class A), 50 litres for an Eco wash and 75 litres for wash and dry, and a 70 dB(A) spin in noise class A. Marks Electrical adds the energy figures: 52 kWh per 100 wash cycles and 305 kWh per 100 wash-and-dry cycles.
i-DOS doses detergent automatically, AutoDry stops drying when clothes are dry, and Wash & Dry 45 washes and dries a small load in 45 minutes. Home Connect gives app control, and AquaStop protects against leaks.
Bosch is offering a five-year warranty on purchases registered between April 2026 and March 2027, plus ten years on the SilentPowerDrive motor. Bosch's own online shop showed it as unavailable when we checked, but Marks Electrical listed it in stock.
Like all washer dryers, drying uses much more energy than washing, which is why the overall class is D. If you have space, a separate washer and heat pump dryer will cost less to run.
Key specifications
| Wash / dry capacity | 10.5 kg / 6 kg |
|---|---|
| Continuous wash & dry load | 6 kg |
| Max spin | 1400 rpm |
| Energy class (wash only) | A |
| Energy class (wash & dry) | D |
| kWh per 100 cycles (wash / wash & dry) | 52 / 305 kWh |
| Water per cycle (wash / wash & dry) | 50 / 75 litres |
| Full wash & dry time | Not stated |
| Spin noise | 70 dB(A) |
| Noise class | A |
| Programmes | Not stated (includes Wash&Dry, Quick 15, Refresh) |
| Quick programme | Quick 15 (wash); Wash & Dry 45 (small loads) |
| Auto-dosing | Yes (i-DOS) |
| Steam | Not stated |
| Wi-Fi / app | Yes (Home Connect) |
| Size (H x W x D) | 848 x 598 x 622 mm |
| Warranty (UK) | 5 years if bought 1 Apr 2026 to 31 Mar 2027 and registered; 10 years on motor |
| Colour | Cast iron grey |
| Leak protection | AquaStop |
Spec check note: Marks Electrical lists noise class D, but Bosch states class A at 70 dB(A); we use Bosch. Marks says Wi-Fi is not applicable while listing Home Connect; Bosch lists Home Connect app control, which we use. Energy per 100 cycles is from Marks, as Bosch's page does not give it.
Specifications checked against: Bosch UK product page (WNC254ARGB), Marks Electrical listing (energy, water)