# Humidifier Philips 4000 series HU4210/03 Ultrasonic 3.5 L Black, 3 W, 100–240 V

**URL:** https://aio.lv/en/product--philips-hu421003--12241777
**Data updated:** 2026-04-01 09:47 (EEST)
**Category:** Air humidifiers
**Manufacturer:** Philips
**Manufacturer code:** HU4210/03
**EAN:** 8720389071904
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 95.49 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 78.92 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--philips-hu421003--12241777

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Thursday | free |
| Pickup points | 25.06.2026 | 1.99 EUR |
| Courier delivery to door | 25.06.2026 | 4.99 EUR |

## Summary description

Philips 4000 series HU4210/03 is an ultrasonic humidifier with a 3.5 L water tank, designed for home use. It operates at 3 W power and accepts 100–240 V AC input. The unit features a plastic housing in black, a 1.5 m power cord and compact dimensions (219.6 × 222.2 × 334 mm). Suitable for maintaining comfortable indoor humidity in living rooms, bedrooms or nurseries.

## Long description

The Philips 4000 series HU4210/03 ultrasonic humidifier is a compact household device designed to maintain comfortable indoor humidity in living rooms, bedrooms and nurseries. The unit features NanoCloud technology to generate fine, hygienic moisture, a 3.5 L top-fill water tank for extended run time and controls that include onboard buttons, smartphone app connectivity and voice assistant compatibility. Its black plastic housing, low power consumption and quiet sleep mode make it suitable for continuous home use.
Advantages
NanoCloud technology produces ultra-fine vapour that reduces bacterial emission compared with standard ultrasonic humidifiers and prevents white dust and wet stains on surfaces. The humidifier delivers up to 300 ml/h of moisture and can operate continuously for up to 21 hours on a full tank. Sleep mode lowers noise levels (around 6 dB) for night-time use, while the low power draw keeps energy use minimal. The device supports basic aromatherapy via a designated aroma compartment, offers easy top-fill access and uses a replaceable long-life filter for simplified maintenance.
Suitable for
Homes: living rooms, bedrooms and nurseries
People experiencing dry-air symptoms such as dry skin, dry throat or nasal congestion
Rooms with wooden furniture or houseplants that benefit from stable humidity
Users who require quiet night-time operation and remote control via app or voice assistants
Key specifications
Humidification technology: NanoCloud evaporative/atomizing system
Maximum moisture output: up to 300 ml/h
Water tank capacity: 3.5 L
Coverage: suitable for rooms up to approximately 44 m²
Operating modes: 3 fan speeds, automatic mode, sleep mode (≈6 dB)
Power consumption: low, up to approximately 3 W at highest setting
Filter: replaceable long-life filter (typical lifespan up to 6 months)
Water type: suitable for ordinary tap water
Controls: onboard controls, smartphone app (Air+), voice assistant compatibility
How to use
Place the humidifier on a flat, level surface and fill the 3.5 L tank through the top-fill opening with tap water. Select the desired fan speed, automatic mode or sleep mode using the onboard controls or the smartphone app; voice commands can also be used if a compatible assistant is connected. For aromatherapy, add a few drops of an approved essential oil into the designated aroma compartment following the manufacturer guidance. Replace the filter at recommended intervals and clean the water tank and internal surfaces periodically to maintain hygienic operation.
Usage recommendations
Monitor room humidity with a hygrometer and aim for a comfortable range (commonly 40–60% relative humidity). Use the app to schedule operation and adjust settings remotely. Clean the tank and replace the filter regularly, and follow the manufacturer’s maintenance instructions when using tap water and aromatic oils to ensure safe, effective humidification.

## Specifications

### Design

| Feature | Value |
|---|---|
| Product colour | Black |
| Water level indicator | Yes |
| Cord length | 1.5 m |
| Housing material | Plastic |
| Built-in display | Yes |

### Technical details

| Feature | Value |
|---|---|
| Noise level | 25 dB |
| Water tank capacity | 3.5 L |
| Number of speeds | 3 |
| Control type | Touch |
| Country of origin | China |
| Auto power off | Yes |
| Evaporation technology | Ultrasonic |
| Suitable for room area up to | 44 m² |
| Air purification capability | No |
| Removable filter | Yes |
| Operating time | 21 h |
| Timer duration (maximum) | 12 h |
| Timer duration (minimum) | 1 h |
| Humidification capacity | 300 ml/h |
| Sleep mode | Yes |
| Filter life (max) | 6 month(s) |
| Automatic mode | Yes |
| Timer | Yes |
| Humidity sensor | Yes |
| Air quality feedback | Color ring, numerical |
| Warranty period | 2 year(s) |
| Dangerous goods | No |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 1.43 kg |
| Package weight | 2350 g |
| Height | 334 mm |
| Width | 219.6 mm |
| Depth | 222.2 mm |
| Package depth | 265 mm |
| Package height | 390 mm |
| Package width | 265 mm |

### Features

| Feature | Value |
|---|---|
| Connectable to internet | Yes |

### Power

| Feature | Value |
|---|---|
| Power supply type | AC |
| Power | 3 W |
| AC input voltage | 100-240 |

## FAQ

### How much does the Philips HU4210/03 humidifier 3.5 L cost, and is it available for purchase?

The price is 95.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 70 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on Thursday at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Philips HU4210/03 humidifier 3.5 L be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 Philips 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 Philips 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: water tank capacity, weight, 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.

## Image

https://aio.lv/img/cache/product/12241777/68144484_large.webp