# Smart Wi‑Fi Thermostat Mill HC91 Black — Home Heating Control, Programmable

**URL:** https://aio.lv/en/product--mill-53000915--12092414
**Data updated:** 2026-03-13 15:52 (EET)
**Category:** Other goods
**Manufacturer:** Mill
**Manufacturer code:** 53000915
**EAN:** 5707359014041
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 71.49 €
**Prices and availability valid until:** 2026-11-09 23:59
**Price without VAT (21%):** 59.08 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mill-53000915--12092414

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 26.10.2026 | free |
| Pickup points | 29.10.2026 | 1.99 EUR |
| Courier delivery to door | 29.10.2026 | 4.99 EUR |

## Summary description

Mill HC91 is a Wi‑Fi thermostat in black designed for controlling home heating systems. It provides programmable temperature control and remote management via wireless network for scheduling and comfort optimization. Suitable for use with residential heating setups to regulate room temperature, improve energy efficiency and enable convenient remote adjustments.

## Long description

Mill HC91 Black is a Wi‑Fi thermostat designed for residential heating control. The device provides programmable temperature management and remote access over a wireless network, allowing users to set schedules and adjust room temperature from a smartphone or other connected device. Its compact black housing and clear interface are intended for wall mounting in living rooms, bedrooms or corridors to maintain comfort while supporting efficient energy use.
Advantages
The Mill HC91 allows timed temperature control through customizable schedules, reducing manual adjustments and helping to optimize heating energy consumption. Remote management via a Wi‑Fi connection enables temperature changes from anywhere with internet access, and compatibility with standard residential heating systems makes installation straightforward for typical home setups. The black finish provides a neutral appearance that fits many interiors.
Suitable for
Programmable room temperature control in apartments and houses
Remote heating adjustments via smartphone or home network
Replacement of basic thermostats to enable scheduling and improved efficiency
Use in living areas, bedrooms, home offices and hallways
Key specifications
Connectivity: Wi‑Fi for remote control and scheduling
Control type: Programmable thermostat with schedule function
Design: Wall‑mounted unit in black housing
User interface: Display with controls for local operation and programming
Compatibility: Intended for standard residential heating systems (electric and hydronic setups where thermostat control is supported)
How to use
Install the Mill HC91 on a standard wall electrical box at an appropriate height in the room, following the manufacturer’s wiring instructions for your heating system. Configure the device by connecting it to the home Wi‑Fi network through the companion app or on‑device setup, then create daily or weekly schedules to match occupancy patterns. Use the app or the local controls to adjust setpoints, activate temporary overrides, or monitor current room temperature.
Usage recommendations
Place the thermostat on an interior wall away from direct sunlight, radiators, drafts and doors to ensure accurate temperature readings. Regularly review programmed schedules to match seasonal changes and maintain energy-efficient operation. If unsure about wiring, consult a qualified installer to ensure safe and correct connection to your heating system.

## FAQ

### How much does the Mill HC91 Wi‑Fi Thermostat (Black) cost, and is it available for purchase?

The price is 71.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 145 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 26.10.2026 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 Mill HC91 Wi‑Fi Thermostat (Black) 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 Mill 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 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. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12092414/70323719_large.webp