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Alpenheat Circulation AD21 UV Boot Dryer USB-C with Mains and Car Adapters

Alpenheat Circulation AD21 is a portable shoe and boot dryer and warmer with built-in UV light that reduces bacteria and gets rid of unpleasant odour. Powered via USB-C 5V, the set includes a mains adapter and a 12V car adapter – dry your boots at home, in the mountain hut or on the road. No fan, no moving parts, silent, max. 9 W.

Brand: ALPENHEAT - Austria
Product Code: AHAD21
In Stock
В наличност - продуктът е наличен и може да бъде доставен до 2-3 дни
По поръчка - продуктът не е наличен и може да бъде доставен до 7-14 дни
Изчерпан - продуктът е изчерпан и не е достъпен за поръчка към момента
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48 installments of 1.39€(0.71€)

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🥾 Alpenheat Circulation AD21 – dry, warm boots at home, in the hut and in the car

CIRCULATION is an affordable, portable shoe and boot dryer, with a built-in UV light that reduces bacteria and gets rid of unpleasant odour, whilst gently drying your shoes or boots.

CIRCULATION can also be used to heat-up your shoes before you put them on, so begin your day with completely dry and warm feet.

The special design features of CIRCULATION include the integrated feet, elevating the dryer off the boot or shoe allowing the hot air to circulate freely.

The unique “venturi system” works like a carburettor to accelerate drying time by drawing the cooler air in through the bottom, heating it and pushing it to the top. No fan is used, so there are no moving parts. The air is heated to about 30°C.

CIRCULATION is ideal to take along on day trips and on holiday: no more wet or cold shoes! AD21 is a set consisting of a compact shoe dryer in orange with a 5V USB-C connector and a 12V USB-C car adapter. The dryer can be powered via any compatible USB-C power source worldwide or in the car using the 12V car adapter included. According to the supplier invoice, the set also includes an AC47 (QC/PD) mains adapter.

💡 Key technology: Built-in UV light + fan-free “venturi” circulation – dries silently, warms to ~30°C and reduces bacteria and odour.

✨ Key benefits

  • UV light: kills bacteria and removes odour
  • USB-C 5V power: from an adapter, power bank or car
  • 12V car adapter: your boots start drying on the drive home
  • No fan: no moving parts, silent
  • Warms in minutes, dries in hours: drying time 8–10 hours
  • Compact and light: fits easily in any shoe or boot

⚙️ Technical specifications

FeatureValue
BrandAlpenheat
ModelCIRCULATION AD21
CodeAHAD21 (Alpenheat AD21)
ColourOrange
PowerUSB-C 5V
OutputMax. 9 W
Air temperatureAbout 30°C
TechnologyFan-free venturi circulation; built-in UV light
Drying time8–10 hours (depending on wetness)
DimensionsL 16 x H 5 x W 3 cm
Weight190 g
Set content1 pair of orange shoe dryers, 12V USB-C car adapter (AC48); per invoice also AC47 (QC/PD) mains adapter

🏔️ When you’ll need it

After a wet hike in Rila or Pirin, after a ski day in Bansko or Borovets, in the mountain hut or hotel – the dryer fits in your backpack pocket, and with the car adapter your boots start drying on the way home.

❓ Frequently asked questions (FAQ)

Q: Can I use it in the car?
A: Yes. The set includes a 12V USB-C car adapter that plugs into the cigarette lighter socket.

Q: How long does drying take?
A: 8–10 hours depending on how wet the shoes are. Warming before wearing takes minutes.

Q: Is it suitable for ski boots?
A: Yes – the compact size (16 x 5 x 3 cm) fits boots, hiking shoes and ski boots.

Q: What is the difference from AD20?
A: AD20 is the same dryer with a USB-C plug. AD21 is a set that adds a 12V car adapter.

Fast Delivery of Sports Gear with Extreme-BG

Order your equipment now with secure delivery to any location in Bulgaria (Sofia, Plovdiv, Varna, Burgas and the whole country) and internationally. We process orders as quickly as possible to ensure timely arrival.

Delivery in Bulgaria (Times & Couriers)

We deliver via the partner networks of Econt, Speedy, Box Now, Easybox and Sameday. After an order is placed and the product is available, the delivery time is:

  • 1-2 working days: For deliveries with Econt and Speedy.
  • 2-3 working days: For deliveries with Box Now, Easybox and Sameday.

*For quick orders or online stock, we will contact you by phone to confirm the details.

Payment & Pickup Deadlines

  • Box Now: Payment is made in advance on our website (by card or PayPal) or by cash on delivery with a card – via a link that Box Now sends to your phone before you collect the parcel. Parcels are kept in the locker for up to 3 calendar days.
  • Econtomat: Payment at the locker itself is not possible. Cash on delivery is paid online via Econt or at an Econt office.
  • Easybox / Sameday / Speedy Automat: Payment by card at the device upon pickup. Pickup deadline: up to 3 days.
  • Offices and Address: Parcels are kept for up to 7 days, after which they are automatically returned.

Delivery Rates (Price List)

Prices are fixed based on the order value and the chosen method:

Delivery Method Price
Store Pickup
(Sofia, 42 Dondukov Blvd)
Free
Orders over 50 EUR
(To office / locker of all couriers)
Free
Box Now
(Orders under 50 EUR)
1.50 EUR
Econtomat / Speedy Automat / Easybox / Sameday point
(Orders under 50 EUR)
3.00 EUR
Econt / Speedy Office
(Orders under 50 EUR)
4.50 EUR
To Address (Econt / Speedy / Sameday)
(For all orders)
5.50 EUR

International Delivery

For customers outside Bulgaria, deliveries are made by Bulgarian Posts, DPD, EMS and Econt.

  • Price and delivery time depend on the weight and the courier's tariff (calculated at checkout).
  • All international orders are paid in advance by card or PayPal.
  • For non-EU countries, customers pay any additional customs duties and taxes applicable in their country.

Returns and Exchange

Returns or exchanges are possible up to 30 days from receipt. Shipping costs are covered by the customer. Return addresses:

  • Econt Office: Sofia, 73 Rakovski St.
  • Speedy Office: Sofia – Operata
  • Box Now locker: Sofia – Stara Planina
  • In person at our store: Sofia, 42 Knyaz Al. Dondukov Blvd.

You can read more information here.

In our online store we offer product exchange, product return and warranty claims in case of a defect:

Product Exchange To exchange a product, you must first return the product you received, packed and in resalable condition, and pay for the return shipping. If there is a price difference, we will refund the overpaid amount by bank transfer, or you will pay the difference.
Product Return

You can return a product within 30 days of receiving your order.

  • Fill in the online form or include a paper form in the parcel with your name, phone number and order number.
  • Pack the parcel well. Products must be in their original packaging, with all tags and accessories attached.
  • Products must show no signs of use and must be in resalable condition.
  • Return shipping is paid by the customer.
  • Refunds are made by bank transfer within 14 days after we receive and inspect the returned product.
Return addresses:
Econt office: Sofia – 73 Rakovski St.
Speedy office: Sofia – Operata
Box Now locker: Sofia – Stara Planina
In person at our store: Sofia, 42 Knyaz Al. Dondukov Blvd.
Warranty Claims A defective product within its warranty period must be returned clean, with its warranty card and in its original packaging. In case of a manufacturing defect, the item will be repaired within 10 working days. The item is replaced if the defect cannot be repaired.

You can read more about the conditions here.

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🥾 Alpenheat Circulation AD21 – dry, warm boots at home, in the hut and in the car

CIRCULATION is an affordable, portable shoe and boot dryer, with a built-in UV light that reduces bacteria and gets rid of unpleasant odour, whilst gently drying your shoes or boots.

CIRCULATION can also be used to heat-up your shoes before you put them on, so begin your day with completely dry and warm feet.

The special design features of CIRCULATION include the integrated feet, elevating the dryer off the boot or shoe allowing the hot air to circulate freely.

The unique “venturi system” works like a carburettor to accelerate drying time by drawing the cooler air in through the bottom, heating it and pushing it to the top. No fan is used, so there are no moving parts. The air is heated to about 30°C.

CIRCULATION is ideal to take along on day trips and on holiday: no more wet or cold shoes! AD21 is a set consisting of a compact shoe dryer in orange with a 5V USB-C connector and a 12V USB-C car adapter. The dryer can be powered via any compatible USB-C power source worldwide or in the car using the 12V car adapter included. According to the supplier invoice, the set also includes an AC47 (QC/PD) mains adapter.

💡 Key technology: Built-in UV light + fan-free “venturi” circulation – dries silently, warms to ~30°C and reduces bacteria and odour.

✨ Key benefits

  • UV light: kills bacteria and removes odour
  • USB-C 5V power: from an adapter, power bank or car
  • 12V car adapter: your boots start drying on the drive home
  • No fan: no moving parts, silent
  • Warms in minutes, dries in hours: drying time 8–10 hours
  • Compact and light: fits easily in any shoe or boot

⚙️ Technical specifications

FeatureValue
BrandAlpenheat
ModelCIRCULATION AD21
CodeAHAD21 (Alpenheat AD21)
ColourOrange
PowerUSB-C 5V
OutputMax. 9 W
Air temperatureAbout 30°C
TechnologyFan-free venturi circulation; built-in UV light
Drying time8–10 hours (depending on wetness)
DimensionsL 16 x H 5 x W 3 cm
Weight190 g
Set content1 pair of orange shoe dryers, 12V USB-C car adapter (AC48); per invoice also AC47 (QC/PD) mains adapter

🏔️ When you’ll need it

After a wet hike in Rila or Pirin, after a ski day in Bansko or Borovets, in the mountain hut or hotel – the dryer fits in your backpack pocket, and with the car adapter your boots start drying on the way home.

❓ Frequently asked questions (FAQ)

Q: Can I use it in the car?
A: Yes. The set includes a 12V USB-C car adapter that plugs into the cigarette lighter socket.

Q: How long does drying take?
A: 8–10 hours depending on how wet the shoes are. Warming before wearing takes minutes.

Q: Is it suitable for ski boots?
A: Yes – the compact size (16 x 5 x 3 cm) fits boots, hiking shoes and ski boots.

Q: What is the difference from AD20?
A: AD20 is the same dryer with a USB-C plug. AD21 is a set that adds a 12V car adapter.

Fast Delivery of Sports Gear with Extreme-BG

Order your equipment now with secure delivery to any location in Bulgaria (Sofia, Plovdiv, Varna, Burgas and the whole country) and internationally. We process orders as quickly as possible to ensure timely arrival.

Delivery in Bulgaria (Times & Couriers)

We deliver via the partner networks of Econt, Speedy, Box Now, Easybox and Sameday. After an order is placed and the product is available, the delivery time is:

  • 1-2 working days: For deliveries with Econt and Speedy.
  • 2-3 working days: For deliveries with Box Now, Easybox and Sameday.

*For quick orders or online stock, we will contact you by phone to confirm the details.

Payment & Pickup Deadlines

  • Box Now: Payment is made in advance on our website (by card or PayPal) or by cash on delivery with a card – via a link that Box Now sends to your phone before you collect the parcel. Parcels are kept in the locker for up to 3 calendar days.
  • Econtomat: Payment at the locker itself is not possible. Cash on delivery is paid online via Econt or at an Econt office.
  • Easybox / Sameday / Speedy Automat: Payment by card at the device upon pickup. Pickup deadline: up to 3 days.
  • Offices and Address: Parcels are kept for up to 7 days, after which they are automatically returned.

Delivery Rates (Price List)

Prices are fixed based on the order value and the chosen method:

Delivery Method Price
Store Pickup
(Sofia, 42 Dondukov Blvd)
Free
Orders over 50 EUR
(To office / locker of all couriers)
Free
Box Now
(Orders under 50 EUR)
1.50 EUR
Econtomat / Speedy Automat / Easybox / Sameday point
(Orders under 50 EUR)
3.00 EUR
Econt / Speedy Office
(Orders under 50 EUR)
4.50 EUR
To Address (Econt / Speedy / Sameday)
(For all orders)
5.50 EUR

International Delivery

For customers outside Bulgaria, deliveries are made by Bulgarian Posts, DPD, EMS and Econt.

  • Price and delivery time depend on the weight and the courier's tariff (calculated at checkout).
  • All international orders are paid in advance by card or PayPal.
  • For non-EU countries, customers pay any additional customs duties and taxes applicable in their country.

Returns and Exchange

Returns or exchanges are possible up to 30 days from receipt. Shipping costs are covered by the customer. Return addresses:

  • Econt Office: Sofia, 73 Rakovski St.
  • Speedy Office: Sofia – Operata
  • Box Now locker: Sofia – Stara Planina
  • In person at our store: Sofia, 42 Knyaz Al. Dondukov Blvd.

You can read more information here.

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