BOSCH WGB266A4BY Series 8

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BOSCH WGB266A4BY Series 8
BOSCH WGB266A4BY Serie 8 washing machine
The BOSCH WGB266A4BY Serie 8 washing machine is a premium model designed for demanding users who expect maximum performance, low consumption, and smart technology all in one. This modern front-loading washing machine offers an economical A energy rating, i-DOS automatic detergent dosing, advanced steam functions, and remote control via the Home Connect app. With its quiet Eco Silence Drive motor, Active Water Plus system, and technologies for stain removal and hygienic washing, it delivers outstanding results with every cycle. The BOSCH WGB266A4BY is the ideal choice for modern households that want efficient yet gentle washing without compromise.
Why choose the BOSCH WGB266A4BY Serie 8 washing machine
i-DOS with Detergent Scan function:
stop manual dosing and save on detergent
i-DOS automatic measuring:
the precise amount of detergent and water
Iron Assist:
reduces creases by up to 50%
Added steam:
less ironing, more time for you
Mini Load:
a programme for a single item of clothing
Maximum protection against flooding with AquaStop
The BOSCH WGB266A4BY washing machine is equipped with the reliable AquaStop system, which protects your home from water damage for the entire lifetime of the appliance. A special double-layered inlet hose, a safety valve, and a tub with a water leak sensor work together to ensure a high level of safety during every wash. The protection works for both water supply failures and leaks inside the washing machine itself.
i-DOS with Detergent Scan function for precise dosing
Bosch washing machines with the i-DOS automatic dosing system set the precise amount of detergent automatically, with millilitre precision. By dosing precisely, the system helps protect your laundry from excessive detergent and contributes to the efficient use of detergent.

Automatic i-DOS dosing saves time and consumption
The BOSCH WGB266A4BY washing machine features the intelligent i-DOS automatic dosing system, which precisely determines the required amount of water and detergent for each wash. Simply fill the dispensers and the washing machine takes care of everything automatically. The technology helps prevent unnecessary waste and also ensures more efficient washing without excessive rinsing.
BOSCH WGB266A4BY washing machine with Iron Assist for less ironing
The Iron Assist function uses a gentle steam to reduce creases in clothes by up to 50%. The BOSCH WGB266A4BY washing machine can refresh and smooth out not only freshly washed laundry but also worn shirts or trousers during a short programme. The result is less time spent at the ironing board and more comfort in your daily life.
Added steam for easier laundry care
The steam function in the final stage of the wash helps to significantly reduce creases and makes subsequent ironing easier. The BOSCH WGB266A4BY Serie 8 washing machine uses added steam to soften the fabric fibres, leaving clothes smoother. An ideal solution for households that want to save time and effort.
Mini Load for small loads of laundry
The Mini Load function enables the efficient washing of small loads up to 0.5kg without wasting energy and water. The BOSCH WGB266A4BY washing machine optimises the entire wash cycle so that washing individual items is fast, economical and environmentally friendly.
Smart control of the BOSCH WGB266A4BY with Home Connect
With Home Connect technology, you can conveniently control the BOSCH WGB266A4BY washing machine via your mobile phone or tablet. The app offers remote start, notifications and programme recommendations using the Easy Start Guide function. Simply enter the fabric type, colour and level of soiling, and the system will recommend the ideal wash settings.
Energy class A for low consumption
Thanks to their energy management system, Bosch washing machines achieve the highest energy class A and ensure efficient washing.
BOSCH WGB266A4BY with Active Water Plus
Our Active Water Plus technology delivers perfect results while using only the necessary amount of water for each wash. Thanks to its highly efficient water management technology, the exact load is automatically detected and the water consumption is adjusted accordingly. Save up to 50% water when washing smaller loads.
Speed Perfect shortens the washing time
If you're in a hurry, the Speed Perfect function shortens the wash cycle by up to 65%. The BOSCH WGB266A4BY washing machine maintains a high quality of washing and can be used with most programmes and fabric types. For example, you can select the Mix programme, which, together with this function, thoroughly washes up to 4kg of laundry in just 46 minutes.
Anti Stain removes stubborn stains
The Anti Stain system automatically adjusts the temperature, drum movement and wash duration according to the type of stain. The BOSCH WGB266A4BY washing machine can tackle grease, blood, tea or cosmetics, ensuring the thorough removal of even stubborn dirt.
Reload function to add forgotten laundry
Forgot to put in a sock or a T-shirt? With the Reload function, you can simply open the door during the wash cycle and add or remove laundry. The BOSCH WGB266A4BY Serie 8 gives you maximum flexibility with every wash.
The BOSCH WGB266A4BY with a quiet and durable motor
The efficient and quiet brushless motor's design reduces noise, vibration and heat during operation. By limiting friction, it also contributes to the appliance's long-term high performance.
Hygiene Plus for hygienically clean laundry
The BOSCH washing machine also includes a special Hygiene Plus programme, which maintains a stable temperature during the wash and adds an extra rinse to the cycle. The BOSCH WGB266A4BY Serie 8 thus effectively eliminates bacteria, allergens and dust mites even at 40°C, ensuring maximum hygiene for sensitive skin.
Comfortable Comfort Control touch control
The ergonomically angled Comfort Control touch panel enables fast and intuitive programme selection. The BOSCH WGB266A4BY offers clear controls with a modern design, letting you set the desired programme in seconds.
AntiVibration sidewalls for stable and quiet washing
The special design of the AntiVibration sidewalls increases the appliance's stability and reduces vibrations during the spin cycle. The BOSCH WGB266A4BY therefore operates exceptionally quietly, even at high speeds.
Sport/Fitness programme for functional clothing
The special Sport/Fitness programme is designed for the gentle washing of sports and functional clothing. The BOSCH WGB266A4BY washes at lower temperatures and uses a gentler spin cycle to help protect the properties of modern sports materials.
Smart Start for clever wash scheduling
With the Smart Start function, your connected appliances automatically select a start time to make the best use of available energy sources. This could be when there is maximum availability of energy from your photovoltaic system, or according to your lowest energy prices depending on the time of day.

Key parameters of the BOSCH WGB266A4BY Serie 8 washing machine
Energy class
A
Appliance colour
white
Maximum capacity in kg
11kg
Maximum spin speed
1600 rpm
Noise level when washing
52dB(A) re 1pW
Spin noise level
72dB(A) re 1pW
Water damage safety system
AquaStop water protection
Power cable length
160cm
Appliance dimensions
845 × 598 × 590mm
Connected appliances with Home Connect
Yes
Is it possible to change the door opening direction on the washing machine?
On the vast majority of front-loading washing machines, the door opening direction cannot be reversed, since the door hinge is permanently built into the front panel and tied to the electromagnetic safety lock. Reversible doors are more common on dryers or certain premium models.
Is it possible to remove the top panel?
On modern washing machines, the top panel cannot be removed for undercounter installation, as it provides protection against moisture and electrical hazards. These machines are designed to stand freely or fit under a sufficiently high countertop (85 cm).
The control of the washing machine is locked and the key symbol (child lock) is illuminated.
The child lock is active. To turn it off, press and hold the "Ready in" and "Spin speed" buttons — or the button marked with a key/3s icon — together for about 3 seconds. The machine will beep and the key symbol will go out.
Is it better to have a washing machine with or without i-DOS?
A washing machine with i-DOS (automatic dosing) is the better choice. It detects the load size, fabric type, and soil level, then doses detergent down to the milliliter. This can save up to 38% of water use and a significant amount of detergent each year, while helping prevent stains and residue buildup in the drum.
Can I use powdered detergent with a washing machine with i-DOS?
Yes, powdered detergent can be used, but it can't be dosed automatically. It needs to go manually into the compartment designated for manual dosing in the drawer, while the automatic i-DOS chambers are meant only for liquid detergent and softener.
i-DOS automatic dosing does not dispense detergent (in general).
Check whether the i-DOS function is switched on for that chamber on the control panel (look for the lit icon). Also check that the detergent isn't too thick — it can be diluted slightly with water — and that the drawer's suction valves aren't clogged; it's best to remove the drawer and rinse it thoroughly with warm water.
The washing machine does not dispense fabric softener.
For manual dosing, check whether the cap or siphon in the softener compartment is blocked — remove the drawer and rinse it with warm water. With i-DOS, make sure the chamber is set in the machine's menu to dispense softener (not a second detergent) and that dosing is switched on.
I am having trouble unscrewing the bottom filter for objects.
The filter is often blocked by limescale, lint, or a foreign object such as a coin. Avoid using excessive force, as this can strip the plastic thread. Try gently working it loose by turning it back and forth, or carefully use pliers with a cloth for grip. If the problem persists, it's best to contact authorized service.
How do I drain the water from the washing machine and open the locked door (if the program did not complete and ended with an error)?
Unplug the machine from the power supply. Open the small service panel at the bottom and drain the water into a container using the small emergency drain hose. Then pull the emergency release cord (usually a black or blue plastic tab) downward to mechanically unlock the door so it can be opened.
What are the dimensions of the washing machine?
Standard front-loading washing machines measure roughly 85 cm in height, 60 cm in width, and 55–60 cm in depth.
The washing machine jumps during the spin cycle.
This is most often caused by not removing the transit bolts on the back of the machine after unboxing. If they were removed, check that the machine is properly leveled on its adjustable feet and stands firmly on a stable floor. An overloaded drum or a single bulky item (like a blanket) causing an uneven load can also be the cause.
The laundry doesn't smell fresh after washing.
This usually happens due to bacteria and mold buildup inside the machine from frequent washing at low temperatures (30–40 °C). Run the Drum Clean program or an intensive 90 °C cycle with a washing machine cleaner and no laundry. After each wash, leave the door and detergent drawer slightly open.
What is the duration of each program?
Duration depends on the selected program and load size. Eco 40-60 usually takes the longest, around 3 to 3.5 hours, to maximize energy and water savings. Quick programs (Super 15'/30') take 15 to 30 minutes, while a standard Cotton 40 °C program runs about 2 to 2.5 hours.
Can I place a dryer on top of the washing machine?
Yes, this is possible and a popular space-saving setup. A dryer can be placed on top of a front-loading washing machine that's at least 55 cm deep. For safe installation, it's essential to use an original stacking kit, which may also include a handy pull-out shelf.
Why does the program time lengthen or shorten?
Washing machines are equipped with smart sensors (such as ActiveWater Plus) that monitor load size, fabric absorbency, and foam levels. If a smaller load is detected, the time is shortened dynamically. If there's excess foam or an unbalanced load, the machine adds extra rinses or tries to redistribute the laundry, which extends the time instead.
Can the water and drain connections of the washing machine be extended?
Yes. The AquaStop inlet hose can't be extended with a regular hose — an original extension kit (code WMZ2381 / WMZ20490), 2.5 meters long, must be used instead. The drain hose can be extended using a standard connector and extension hose, up to a maximum total length of 4 meters.
For questions about Bosch large home appliances, you can find all the useful information here.
Specifications
Washing machine energy parameters
Washing machine specifications
Control panel language
Washing machine dimensions
Washing machine colour
Washing machine function
Connection and compatibility
Model type
Power outlet type
Package dimensions
BSH domácí spotřebiče s.r.o., Radlická 350/107c, 158 00, Praha 8, www.bsh-group.com/cz
Specifications can be changed without notice. Images are for illustrative purposes only.

