Bosch 8kg vs 9kg vs 10kg Washing Machines: Key Differences

Choosing between Bosch’s 8kg, 9kg, and 10kg washing machines mainly comes down to household size, laundry habits, and the types of items you wash. Here’s a clear comparison to help you decide which capacity fits your needs.

Feature Comparison Table

Feature/Spec	Bosch 8kg	Bosch 9kg	Bosch 10kg
Ideal Household Size	3–4 people	3–4 people	5+ people
Bulky Items (duvets, etc.)	Suitable	Suitable	Best for large/bulky
Typical Energy Rating	A	A	A
Spin Speed	Up to 1400rpm	Up to 1400rpm	Up to 1400rpm
Drum Volume	~55–63L	~63L	~63L+
Program Variety	10–14	10–14	12–14
Dimensions (HxWxD)	~84.8x59.8x58.8cm	~84.5x59.8x59cm	~84.5x59.8x58.8cm
Price Range	Lower	Medium	Higher

Detailed Differences

1. Household Size & Laundry Volume

8kg and 9kg models are ideal for medium-sized households (3–4 people), handling regular laundry loads efficiently.

10kg models are best for larger families (5+ people) or anyone who regularly washes large loads or bulky items like duvets.

2. Bulky and Large Items

While 8kg and 9kg machines can manage most household laundry, a 10kg drum is preferable if you frequently wash bedding, curtains, or large towels.

3. Energy Efficiency

All three capacities typically achieve high energy ratings (A), so there’s little difference in efficiency across sizes.

4. Features & Programs

Program variety and features (such as quick wash, delay timer, and steam functions) are similar across capacities, though some higher-capacity models may offer additional cycles or larger drum volumes for even better fabric care.

5. Price and Space

Larger capacity machines (10kg) generally cost more and may take up slightly more space, though Bosch keeps dimensions compact across the range.

Specific Models

Feature/Spec	Bosch 8kg WAN28258GB	Bosch 9kg (e.g., WGG24409GB)	Bosch 10kg (e.g., WGG245S2GB)
Series	Series 4	Series 4/6	Series 6
Ideal Household	3–4 people	3–4 people	5+ people
Bulky Items	Suitable for regular loads	Suitable for larger loads	Best for bulky/large items
Energy Rating	A	A	A
Spin Speed	Up to 1400 rpm	Up to 1400 rpm	Up to 1400 rpm
Noise Level (Spin)	72 dB	~71 dB	Slightly louder
Drum Volume	65 L	~63 L	63 L+
Program Variety	15 programs	10–14 programs	12–14 programs
Dimensions (HxWxD)	84.5 x 59.8 x 59 cm	~84.5 x 59.8 x 59 cm	~84.5 x 59.8 x 58.8 cm
Price Range	Medium (£450–£500)	Medium	Higher (£570+)
Warranty	5 years	5 years	5 years
Smart Features	No internet connectivity	Limited	Some models with i-DOS dosing

Bosch WAN28258GB (8kg) Key Features

• Capacity: 8 kg, suitable for medium households (3–4 people)
• Spin Speed: 1400 rpm with spin efficiency class B
• Noise Level: 72 dB during spin, Quiet Mark certified
• Energy Rating: Class A (new EU label), approx. 46 kWh/100 cycles, 47 L/cycle
• Programs: 15 wash programs including Super Quick 15/30, Iron Assist, Night Wash, Outdoor, Wool/Handwash, Delicates, Hygiene Plus
• Special Features:
  • SpeedPerfect – up to 65% faster washing
  • ActiveWater Plus – adjusts water to load size
  • Reload Function – add items mid-cycle
  • VarioDrum – gentle on fabrics
  • Child Lock, Delay Start (up to 24h), Time Remaining Display
• Dimensions: 84.5 x 59.8 x 59 cm (door closed 63.3 cm)
• Installation: Freestanding, cold water fill only
• Control: Rotary dial with touch buttons and LED display
• Warranty: 5 years parts and labour

Comparison Highlights

The WAN28258GB 8kg model provides excellent balance between size, performance, and features like SpeedPerfect and Iron Assist. Ideal for 3–4 person households seeking energy-efficient and versatile laundry solutions.

While slightly smaller in drum volume compared to 9kg and 10kg units, it maintains the same 1400 rpm spin speed and fabric care technologies.

At 72 dB, it's a bit louder than Series 6 9kg models but still certified Quiet Mark.

Higher-end models in 9kg and 10kg ranges offer extra capacity and smart features like i-DOS and Home Connect, which the 8kg model lacks.

Summary

Choose Bosch WAN28258GB (8kg) for a compact yet powerful washer with advanced features suited for a medium household. For larger families or if you need smart connectivity and more space, consider the 9kg or 10kg Bosch models.

For most homes, 8kg and 9kg offer the best balance of capacity, efficiency, and price. opt for 10kg if your laundry needs are above average or you want maximum flexibility for large or infrequent loads.