Market Size and Penetration
AVC puts 2023 retail sales of smart appliances in China — air conditioners, refrigerators, washers, and kitchen appliances among them — at about RMB 350 billion, with penetration above 55%. MIIT's 14th Five-Year Plan for Intelligent Manufacturing pushes the industry further toward connected products. On the commercial side, smart air conditioners, washers, and dryers in hotels, apartments, and offices are multiplying. iResearch estimates more than 80 million connected commercial appliances in 2024, growing about 20% a year.
Home and Commercial, and Where They Stick
The market splits in two. At home the link is usually Wi-Fi or Bluetooth. Shared laundry, hotel linen rooms, and apartment appliances are scattered and have no fixed Wi-Fi, so they use 4G/5G or NB-IoT. The hard parts follow from that. Scattered machines are hard to maintain. A commercial unit may sit in another building or another city, and a fault is still found by sending someone. Billing and operations. A shared machine needs remote billing, remote control, and a restock reminder. Energy labels and compliance. Energy-label and carbon rules need a trace of what the machine actually did.
Standards and Terms
Relevant documents include GB/T 36950, Information security technology — general technical requirements for smart-home security; GB/T 4343.1, Electric washing machines for household and similar use; and the group standard on smart-appliance interconnection. Terms in daily use: Matter (formerly CHIP, the smart-home interconnection standard); Wi-Fi, Bluetooth, and BLE (the home link); 4G Cat.1 and NB-IoT (commercial sites with no Wi-Fi); M2M (device-to-cloud communication); OTA (over-the-air update). A commercial unit on 4G Cat.1 uses about 5 Mbps uplink, a heartbeat every 5–15 minutes, and about 50–200 MB a month.
Who Builds It
The chain runs from appliance makers (Haier, Midea, Gree, and Hisense) through shared-laundry operators (Haier Laundry, Panda Laundry, and Suxike) to modules and connectivity. On shared washers the names that come up are Haier Laundry, Panda Laundry, Suxike, and Little Duck. Haier Laundry covers campuses, residential compounds, and factories, with more than 100,000 machines. Midea and Haier lead the hotel and apartment packages.
Where It Has Been Used
A university laundry put 200 shared washers on 4G Cat.1. Run state, cycle count, and fault codes report as they happen, and restock and repair orders go out on their own. Response time fell from 24 hours to under 4 hours. A serviced-apartment chain fitted smart air conditioners and washers in 5,000 rooms. Energy and fault data land on one platform, and energy efficiency improved by about 15%.
Where IoT Is Used
Commercial machines: Shared washers, dryers, and water dispensers report run state, cycle count, and fault codes over 4G/5G or NB-IoT. The same link bills the cycle, starts or stops the machine, and flags a restock.
Hotels and apartments: Air conditioners, lights, and door locks stay on the network for remote control, an energy total, and a fault warning, so the operator spends less time walking the floors.
After-sales, before the failure: A home appliance sends run data to the cloud. Anomaly detection and a fault forecast support a service visit that is offered first, and a spare that is already on the van.
Where the Market Is Heading
Standards such as Matter are making brands talk to each other. Large language models are taking on voice control and an understanding of the scene. Cellular's share on commercial sites keeps rising. Appliances are being tied to energy management and to a carbon-footprint record.
Summary
A single smart appliance is giving way to a whole-home system at one end and a commercial fleet at the other. The fleet is where a cellular link earns its place. SimtoLink supplies 4G/5G and NB-IoT SIM cards and communication modules for these machines, so a washer in a basement laundry stays online for remote maintenance and for the numbers the operator actually runs on.