{{ totalProductsCount }}

In cart {{totalProductsCount}} item(s)

Total:
{{sum | formatAmount}}

Your cart is empty

header-product Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 400W glass panel heater in white, IPX4, for rooms up to 4–6 m²
124.00 €

Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 400W glass panel heater in white, IPX4, for rooms up to 4–6 m²

Get it Today
Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 Photo 1
Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 Photo 2
Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 Photo 3
Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 Photo 4
Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 Photo 5
Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 Photo 6
Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 Photo 7
Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 Photo 1
Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 Photo 2
Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 Photo 3
Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 Photo 4
Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 Photo 5
Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 Photo 6
Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 Photo 7
Keep track of price changes You keep track of price changes
Watch the price drop

Leave your address - as soon as the price of the product goes down, you'll know about it right away

You keep track of price changes

Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 400W glass panel heater in white, IPX4, for rooms up to 4–6 m²

{{email}}
You keep track of price changes

Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 400W glass panel heater in white, IPX4, for rooms up to 4–6 m²

{{email}}
{{selectedOffer && selectedOffer.price | formatAmount}}

Short description

The Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 is a 400W white glass panel heater designed for efficient residential heating in spaces up to 4-6 m². It features advanced X-aluminium heating technology, Mill PID Wattage Tech, and predictive heating control for energy efficiency. Built-in WiFi and Zigbee connectivity allow convenient remote management via the Mill app, complemented by an LED display, child lock, open window detection, and IPX4 splash-proof protection for safe use.
Available at price 124.00 €: 5 pcs.
Total available for order: 120 pcs.
Warranty: 5 Years
SKU: 12671954
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

Deliver

{{selectedOffer.parcelStationDeliveryString}}

Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
Today {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
Thursday {{selectedOffer.courierDeliveryString}}
From 5.27 € (Weight: 5.40 kg)
Parcel couriers
Unisend LV / Latvijas Pasts nodaļa
Thursday {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
0 credit

Esto — pay in 6 equal parts

today

0 €

afterward

6 mth. × 20.67 €

overpayment

0 €

All payment Methods:
Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment
36 months installment: from 3.44 euros per month
Together cheaper
{{product.price | formatAmount}}
{{product.title}}
{{productBundle.reference.specialPrice | formatAmount}}
{{productBundle.title}}
{{productBundlePreviousPrice | formatAmount}}
{{productBundleSpecialPrice | formatAmount}}

You saving {{productBundleYouSave | formatAmount}}

Product information

Description

The Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 400W White IPX4 is a modern glass panel heater designed to provide efficient and reliable temperature management for your residential spaces. Featuring a sleek white glass finish, this 400 W heating appliance blends seamlessly into contemporary interiors while offering smart connectivity options for everyday convenience. It is specifically engineered to heat small areas effectively, utilizing advanced generation heating technology to maintain a comfortable indoor climate.

Advantages

This panel heater offers integrated WiFi connectivity, allowing users to manage and monitor indoor temperatures remotely through a dedicated smart application. Its minimalist glass design ensures it complements various interior décors without occupying excessive space. The unit is built with an IPX4 splash-proof rating, making it suitable for safe operation in environments that may be exposed to occasional moisture. Additionally, the precise digital temperature control helps maintain steady warmth while supporting energy-efficient operation.

Suitable for

  • Heating small residential rooms such as home offices, small bedrooms, or entryways
  • Spaces ranging from 4 to 6 square meters
  • Users looking for app-controlled smart heating solutions
  • Modern interiors requiring a discreet and aesthetically pleasing wall-mounted heater

When it may not be suitable

This heater is not designed to serve as the primary heating source for large open-plan living areas, spacious rooms exceeding 6 square meters, or poorly insulated buildings with high heat loss. Due to its 400 W capacity, attempting to heat spaces larger than recommended will result in insufficient warmth.

Key specifications

  • Power output: 400 W
  • Color: White
  • Material: Glass
  • Connectivity: Built-in WiFi
  • Water resistance rating: IPX4
  • Recommended room size: 4-6 m²

How to use

Mount the panel heater securely to the wall using the provided installation brackets, ensuring adequate clearance from surrounding objects to allow proper air circulation. Connect the appliance to a standard electrical outlet and configure the built-in WiFi feature according to the manufacturer instructions to enable smart control via your mobile device. Use the digital interface or the application to set your desired target temperature and schedule heating periods based on your daily routine.

What to consider before purchase

  • Verify that your room size does not exceed 4 to 6 square meters to ensure adequate heating performance
  • Check for the availability of a stable 2.4 GHz WiFi network if you intend to use the smart control features
  • Ensure there is a properly grounded power outlet located near the intended mounting position

For optimal energy efficiency and consistent comfort, keep doors and windows closed while the heater is in operation and utilize the scheduling features to reduce power consumption when rooms are unoccupied.

Description

Machine translation.

Similar products

{{product.title}}
Show details Hide details

{{highlightedFeature.featureTitle}}:

{{getProductFeatureValueById(product, highlightedFeature.featureId)}}

{{product.price | formatAmount}}

Product comparison

When choosing a suitable heater, buyers often compareMill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 with other Mill brand models such asMill Invisible Smart WiFi Panel Heater 400 W,Panel Heater Mill PA400WIFI4 400W,Mill Glass Smart WiFi Panel Heater Gen. 4 GL1300WIFI4 1300 W,Mill Invisible Smart WiFi Panel Heater PA1300WIFI4 1300W, andMill Invisible Heater IB700DN Panel Heater 700 W. All these units are designed for efficient residential heating, feature WiFi connectivity for remote control, and carry an IPX4 splash-proof rating. The main differences lie in their casing design (glass versus invisible metal panel), power output, heating elements in specific modifications, and the room size they are designed to heat.

⚙️ Technical specifications and key feature comparison across the evaluated heater models.

Comparison parameterMill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4Mill Invisible Smart WiFi Panel Heater 400 WPanel Heater Mill PA400WIFI4 400WMill Glass Smart WiFi Panel Heater Gen. 4 GL1300WIFI4 1300 WMill Invisible Smart WiFi Panel Heater PA1300WIFI4 1300WMill Invisible Heater IB700DN Panel Heater 700 WPractical conclusion
Casing type and designWhite glass panelInvisible white designWhite casing designWhite glass panelWhite splash-proof casingWhite rounded-edge casingGlass series models feature a stylish glass surface, whereas the Invisible line offers a more discreet metal body.
Power output400 W400 W400 W1300 W1300 W700 WPower determines maximum heating coverage: 400 W options fit tiny rooms, while 700 W and 1300 W handle medium to large spaces.
Suitable room size4–6 m²4–6 m²4–6 m²15–19 m²15–19 m²9–12 m²Choosing the correct room size prevents energy waste or inadequate heating performance.
Control methodSmart WiFi, Mill app, LED displaySmart WiFiSmart WiFi, mobile appSmart WiFi, remote controlSmart WiFi, mobile appElectronic thermostat, LED displayAlmost all models support smart smartphone control except the IB700DN, which relies on a built-in programmed thermostat.
Heating elementX-aluminum, PID Wattage TechStandard series elementStandard series elementStandard Glass series elementStandard Invisible series elementX-aluminum heating elementAdvanced heating elements and PID regulation in certain models enhance overall energy efficiency.

◎ Evaluation of use cases, buyer needs, and suitable product options.

Use caseRecommended productWhy
Heating a very small room or bedroom up to 4–6 m² with an elegant glass finishMill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4Optimally powered for compact spaces and complemented by a premium glass facade and smart control capabilities.
Heating a small space up to 4–6 m² with a focus on discreet installationMill Invisible Smart WiFi Panel Heater 400 W orPanel Heater Mill PA400WIFI4 400WDelivers the same 400 W power output for small rooms while featuring a less noticeable metal body design.
Heating a spacious living room or office of 15–19 m²Mill Glass Smart WiFi Panel Heater Gen. 4 GL1300WIFI4 1300 W orMill Invisible Smart WiFi Panel Heater PA1300WIFI4 1300WProvides a higher 1300 W power output necessary to efficiently maintain comfort in large indoor areas.
Heating a medium-sized room of 9–12 m²Mill Invisible Heater IB700DN Panel Heater 700 WOffers an intermediate 700 W power level with an X-aluminum element and built-in electronic thermostat for medium spaces.
Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 differs from alternatives by combining a low 400 W power output tailored for compact spaces with a stylish glass casing and advanced energy-saving and smart control features. This heater is best suited for users who need localized heating in small rooms up to 4–6 m² with smartphone management and an aesthetic appearance. A buyer may prefer this model over alternatives if the glass panel look outweighs a standard metal body, or choose higher power versions or different series if larger areas require heating.
Might be useful
{{product.manufacturerName}}
{{product.categoryName}}
{{product.title}}
{{product.specialPrice}}
{{product.price}}
Stock data
Warehouse Stock Delivery to the store Store Price
VSVA 5 Today Best delivery
Get it Today
124.00 € Best price
BT5 50 Thursday
Fast shipping
141.99 €
WH353 65 25.11.2026
175.99 €
Get it Today
124.00 €
Stock: 5
Delivery Date: Today Best delivery
Warehouse: VSVA
Fast shipping
141.99 €
Stock: 50
Delivery Date: Thursday
Warehouse: BT5
175.99 €
Stock: 65
Delivery Date: 25.11.2026
Warehouse: WH353

Customer reviews

Customer questions

FAQ

How much does the Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 cost, and is it available for purchase?

The price is 124.00 € (valid at the time of publication and already includes all taxes). The item is available for order — 120 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 Today 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: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

Can Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the Mill Glass Smart WiFi Panel Heater Gen. 4 GL400WIFI4 online, and the application process is as simple as possible:
  • Select the product on the website and add it to your cart;
  • When placing your order, choose the payment method “Installments”;
  • Fill in the required details for the lending partner;
  • Receive a decision within a few minutes.
For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

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 Mill products come with an official 5 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Mill 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
warranty
14-Day Return Policy
We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
shipping
Fast Delivery
Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
payment
Secure Payment
Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
warranty
Quality Since 2008
AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.