# Portable evaporative air cooler Activejet Regular MKR-550B

**URL:** https://aio.lv/en/product--portable-evaporative-air-cooler-activejet-regular-mkr-550b--3471225
**Data updated:** 2026-04-03 16:13 (EEST)
**Category:** Fans
**Manufacturer:** ActiveJet
**EAN:** 5901443112822
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The Activejet Regular MKR-550B is a portable evaporative air cooler with a water tank capacity of 0.55 L and an airflow of 60 m³/h. It operates on DC, USB, or AC power with an input voltage of 100-240 V and a maximum power consumption of 5 W. The cooler features 6 lighting colors and has dimensions of 165 mm in width, 170 mm in depth, and 165 mm in height.

## Long description

The Activejet Regular MKR-550B is a compact portable evaporative air cooler designed for localized cooling on desks, shelves and small indoor areas. The unit uses water evaporation to reduce perceived temperature and has a 0.55 L transparent water tank with integrated LED illumination in six colours. With physical dimensions of 165 × 170 × 165 mm and a weight of 0.9 kg, the cooler is lightweight and easy to place in workspaces, bedrooms or living areas. It supports DC/USB power and AC input (100–240 V) and draws a maximum of 5 W, providing quiet, energy-efficient operation and three adjustable airflow speeds with a delivered airflow of 60 m³/h.
Advantages
The Activejet Regular MKR-550B combines small footprint and low power consumption to deliver targeted cooling without the need for refrigerants. Its transparent water tank and six-colour LED backlight offer a modern aesthetic that doubles as ambient lighting. The cooler features simple three-button controls with clear LED status indicators, three fan speeds for customised airflow and multiple power options (USB/DC or AC) for flexible placement. Its grey-and-white colour scheme and compact design make it suitable for both home and office interiors.
Suitable for
Cooling a single desk or workstation
Use on bedside tables and in small bedrooms
Portable cooling for small living spaces or study nooks
Supplementary airflow in offices, workshops or hobby areas
Key specifications
Cooling method: evaporative (water-based)
Water tank capacity: 0.55 L (550 ml)
Airflow: 60 m³/h
Power consumption: up to 5 W
Input voltage: DC via USB and AC 100–240 V
Operating modes: 3 fan speeds
Lighting: 6 LED colours (tank illumination)
Dimensions (W×D×H): 165 × 170 × 165 mm
Weight: 0.9 kg
Colour: white with grey details
How to use
Fill the transparent water tank with clean water up to the recommended level, connect the unit to a power source using the supplied USB cable or an appropriate AC adapter, and switch the cooler on using the front control buttons. Select one of the three fan speed settings to adjust airflow intensity; LED indicators will show the current operating mode. Replace or refill the water tank as needed for continuous evaporative cooling and switch off the device before moving or refilling.
Usage recommendations
For best performance, position the cooler on a stable, level surface with unobstructed airflow and use in moderately ventilated rooms. Use clean water and empty the tank if the cooler will be unused for extended periods. Do not add oils or other additives to the water tank. When using AC power, ensure the adapter and USB cable are rated for the voltage in your region.

## Specifications

| Feature | Value |
|---|---|
| Quantity | 1 |
| Illuminated on/off switch | Yes |
| Cooling | Yes |
| Remotely operated | No |
| Number of lighting colours | 6 colours |

### Technical details

| Feature | Value |
|---|---|
| Carrying handle(s) | No |
| Power consumption (max) | 5 W |
| Oscillation | No |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 1150 g |
| Package depth | 190 mm |
| Package height | 170 mm |
| Package width | 180 mm |
| Manual | Yes |
| Package type | Box |

### Features

| Feature | Value |
|---|---|
| Type | Portable evaporative air cooler |
| Certification | CE |
| LED indicators | Power, Speed, Y |
| Product colour | Grey, White |
| Water tank capacity | 0.55 L |
| Number of speeds | 3 |
| Control type | Buttons |
| Castor wheels | No |
| Airflow | 60 m³/h |
| Built-in display | No |
| Humidifier function | Yes |

### Power

| Feature | Value |
|---|---|
| Power source type | DC, USB |
| AC input voltage | 100-240 |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.9 kg |
| Height | 165 mm |
| Width | 165 mm |
| Depth | 170 mm |

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All ActiveJet products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized ActiveJet service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: weight, number of speeds, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for Portable evaporative air cooler Activejet Regular MKR-550B?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/3471225/54371820_large.webp