The Beurer UB-33 is a single-bed heated underblanket designed for comfortable, even bed warming. Featuring an attractive printed motif and a soft cotton top surface, it lies flat on the mattress with no need for straps or fixings — the flexurally rigid construction keeps it in place naturally. Three temperature settings and illuminated switching stages allow easy adjustment, even in the dark.
The cotton top surface (98% cotton, 2% other fibres) sits against your body, providing a breathable, skin-friendly sleeping environment. The underside is made from a needle-punched non-woven material (65% polyester, 20% viscose, 15% polypropylene). The Beurer Safety System (BSS) monitors temperature continuously and activates a safety switch-off if the blanket overheats. The controller is removable before machine washing at 30°C, making maintenance straightforward. Measuring 150 × 80 cm, the UB-33 covers a standard single bed mattress. Power cord length is 2.3 m. Weight: 980 g. Backed by a 5-year Beurer guarantee. OEKO-TEX Standard 100 certified.
Why Choose Beurer Heated Underblanket
- Breathable Cotton Top Surface: 98% cotton top side is breathable and skin-friendly — warms the body without trapping excessive heat, for a comfortable night’s sleep.
- 3 Temperature Settings with Illuminated Switching: Three heat levels and illuminated switch positions make adjustment easy in any lighting, including complete darkness.
- Beurer Safety System (BSS): Continuous temperature monitoring with automatic safety switch-off if overheating is detected — for safe, worry-free use throughout the night.
- Flexurally Rigid — No Fixing Required: The blanket holds its position on the mattress without straps or elastic corners — simply place flat and use.
- Removable Controller: Detach the controller fully before machine washing the blanket at 30°C.
- Machine-Washable at 30°C: Easy, hygienic maintenance — wash the blanket directly after removing the controller.
- Single-Bed Size (150 × 80 cm): Fits a standard single mattress comfortably.
- OEKO-TEX Standard 100 Certified: Materials tested for harmful substances (certification 06.0.43510 Hohenstein HTTI) — safe for use against skin.
- Lightweight at 980 g: Easy to fold, store, and move between rooms.
- 5-Year Beurer Guarantee.
Product Specifications
| Brand / Manufacturer | Beurer (Germany) |
| Model | UB-33 |
| Article Number | 31400 |
| Type | Heated Underblanket (Single Bed) |
| Product Dimensions (L × W) | 150 cm × 80 cm |
| Number of Heat Zones | 1 |
| Temperature Settings | 3 |
| Illuminated Settings | Yes |
| Top Side Material | Cotton fabric (98% cotton, 2% other fibres) |
| Underside Material | Needle-punched non-woven (65% polyester, 20% viscose, 15% polypropylene) |
| Breathable | Yes |
| Attachment Method | Flexurally rigid — no fixing required |
| Controller | 1 × removable sliding switch |
| Safety System | Beurer Safety System (BSS) — temperature monitoring and safety switch-off |
| Automatic Switch-Off | No |
| Automatic Switch-Back | No |
| Machine-Washable | Yes — at 30°C (after removing controller) |
| Power Output | Approx. 60 watts |
| Power Supply | Mains-operated, Euro plug |
| Power Cord Length | 2.3 m |
| Weight (excl. packaging) | 980 g |
| Packaging Dimensions (L × W × H) | 11.20 cm × 37.50 cm × 39.50 cm |
| Colour | White with printed motif |
| Persons | 1 |
| OEKO-TEX Certified | Yes — Standard 100 (06.0.43510 Hohenstein HTTI) |
| CE Certified | Yes |
| Medical Device (EU) | No |
| Guarantee | 5 years |
Usage Instructions
- Place the UB-33 flat on the mattress with the cotton top surface facing upward. No fixing or strapping is required.
- Attach the controller to the socket on the blanket. Ensure the connection is secure.
- Connect the mains cable to a power outlet (2.3 m cord).
- Use the sliding switch to select your preferred temperature setting (1 = low, 2 = medium, 3 = high). The illuminated indicator shows the active setting.
- Place a bed sheet or light duvet over the blanket before getting into bed.
- For pre-warming: switch on 15–30 minutes before bedtime, then reduce to your preferred sleeping setting or switch off before sleeping.
- The UB-33 does not have automatic switch-off — always switch off manually using the sliding switch and unplug from the mains when not in use or before sleeping if preferred.
Care Instructions
- Before washing: Always detach and remove the controller fully from the blanket. Never wash the controller.
- Machine-wash the blanket at 30°C on a gentle or delicate cycle.
- Use mild detergent. Do not use bleach, fabric softener, or stain removers directly on the blanket.
- Do not tumble dry, wring, or iron the blanket.
- Lay flat or hang to air dry. Do not put in a dryer.
- Reattach the controller only after the blanket is fully dry.
- Store the controller loosely — do not wrap the cable tightly or fold the cable sharply.
- Inspect the blanket and cable before each use for signs of damage. Do not use if damaged.
Warnings and Precautions
- Do not fold or scrunch the blanket during use — always lie flat on the mattress.
- Do not sit or kneel on the blanket while switched on, and do not place heavy objects on it.
- The UB-33 does not have automatic switch-off. Always switch off manually and unplug when leaving the bed for an extended period.
- Do not use near water, in a bathroom, or in damp conditions.
- Consult a healthcare professional before use if you are pregnant, diabetic, or have circulatory disorders or reduced heat sensitivity — risk of burns without adequate sensation feedback.
- Do not use under an electric mattress topper or another heated blanket simultaneously.
- Not suitable for use with waterbeds.
- Keep animals away from the blanket during use.
- Not intended for unsupervised use by young children or individuals who cannot feel heat normally.
- Always unplug before washing and before storing for extended periods.
Package Contents
- 1 × Beurer UB-33 Heated Underblanket (150 cm × 80 cm)
- 1 × Removable Controller with mains cable (Euro plug, 2.3 m)
- 1 × Instruction Manual
Frequently Asked Questions
Does the UB-33 need to be attached to the mattress?
No. The UB-33 is flexurally rigid in construction — it holds its position flat on the mattress without needing straps, elastic corners, or any fixing. Simply place it flat on the bed and it stays in position during use.
Does the UB-33 switch off automatically?
No. The UB-33 does not have an automatic switch-off or switch-back function. You must switch it off manually using the sliding switch and unplug from the mains when finished. If you prefer a blanket with automatic switch-off, consider the Beurer UB-68 XXL or UB-100 Cosy models, which include timed auto switch-off.
Can I sleep with the UB-33 switched on?
The UB-33 is fitted with the Beurer Safety System (BSS), which continuously monitors temperature and activates a safety switch-off if overheating is detected. Many users use it on a low setting during the night. However, since there is no automatic timed switch-off, if you prefer not to leave it on while sleeping, use it to pre-warm the bed and switch off before getting in. Always follow the guidance in the instruction manual and consult a doctor if you have any medical conditions affecting heat sensitivity.
Can I machine wash the UB-33?
Yes — but only after removing the controller completely. Detach the controller, then machine-wash the blanket at 30°C on a gentle cycle. Do not tumble dry or iron. Air dry fully before reattaching the controller. Never wash the controller.
What size bed does the UB-33 fit?
The UB-33 measures 150 cm × 80 cm and is designed for a standard single bed mattress. For a double bed, the Beurer TS-26 XXL or UB-68 XXL are the appropriate options, with two independent heating zones for two people.
What does the OEKO-TEX Standard 100 certification mean?
OEKO-TEX Standard 100 is an independent certification that verifies every component of a textile product — including threads, buttons, and print — has been tested for harmful substances and is safe for skin contact. The UB-33 carries certification 06.0.43510 Hohenstein HTTI, confirming it meets these standards.
Is the UB-33 suitable for people with diabetes?
People with diabetes or circulatory conditions may have reduced heat sensitivity, which increases the risk of burns even at lower temperature settings. Consult your healthcare professional before using any heated blanket. If approved for use, start at the lowest setting and check skin regularly during use.




















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