How to Control a Mini-Split From Your Phone in 2026

You can control any mini-split from your phone — regardless of brand — using a smart AC controller. These small devices connect to your home WiFi and communicate with your mini-split via infrared signals, replacing the handheld remote with a smartphone app. Setup takes under five minutes, requires no wiring, and works with virtually every mini-split brand including Mitsubishi, Fujitsu, Daikin, LG, MrCool, Gree, Pioneer, and hundreds more.

How Phone Control Works

Mini-splits use infrared (IR) remote controls — the same technology as a TV remote. A smart AC controller sits in the room, connects to your WiFi, and sends IR commands to the mini-split on your behalf. When you tap a button in the app, the command goes from your phone → cloud → WiFi → controller → IR signal → mini-split. This works from anywhere with an internet connection — across the room or across the world.

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What You Need

• A mini-split with an IR remote control (virtually all models have one)
• A smart AC controller (Boldr Klima, Sensibo, Cielo, Mysa, or similar)
• A 2.4 GHz WiFi network
• A smartphone (iOS or Android)

Smart AC Controllers Compared

How to Set Up Phone Control (Step by Step)

The process is similar across all controllers. Using the Boldr Klima as an example:

Step 1: Plug the Klima into a standard outlet near your mini-split, within line of sight of the indoor unit.
Step 2: Download the Boldr app (iOS or Android).
Step 3: Create an account and follow the in-app setup to connect Klima to your WiFi network.
Step 4: Point your mini-split's existing remote at the Klima and press any button. Klima automatically identifies your AC's brand, model, and command set.
Step 5: Start controlling from your phone. The old remote is no longer needed.

The entire process takes under three minutes with no wiring, no tools, and no technician.

What You Can Do From Your Phone

• Turn on/off remotely: Start cooling before you get home so the house is comfortable when you arrive.
• Set temperature: Adjust the setpoint from anywhere.
• Change modes: Switch between cool, heat, dry, fan, and auto modes.
• Create schedules: Set weekly schedules so the mini-split runs only when needed.
• Monitor energy use: Track how much electricity your mini-split uses by day, week, and month.
• Geofencing: Automatically turn the mini-split on when you approach home and off when you leave.
• Multi-zone control: If you have multiple mini-splits, control each one independently from one app.

What Is the Boldr Klima Smart Controller?

The Boldr Klima is a smart controller designed specifically for ductless mini-splits, window ACs, and portable air conditioners. It features an aluminum and mirrored glass build, one-button remote learning (point your remote at it and press one button), real-time energy cost monitoring, geofencing, scheduling, and multi-user support. Klima is compatible with virtually every AC brand that uses an IR remote control.

→ Learn more about the Boldr Klima Smart Controller

Frequently Asked Questions

Can I control my mini-split from my phone without WiFi?

Smart AC controllers require WiFi to communicate between your phone and the controller. Without WiFi, you would need to use the original IR remote. Some controllers offer Bluetooth for local control, but most features (remote access, scheduling, geofencing) require an internet connection.

Do I need one controller per mini-split?

Yes. Each mini-split indoor unit needs its own controller. However, all controllers connect to the same app, so you manage every unit from one phone.

Will a smart controller void my mini-split warranty?

No. Smart AC controllers communicate via infrared — the same as your original remote. They do not connect to the mini-split's electrical system, internal wiring, or refrigerant circuit. They have no impact on warranty coverage.

Related reading:
→ How Much Does a Mini-Split Cost? Full 2026 Guide
→ Mini-Split Running Cost Per Month: Real Numbers by Size
→ Mini-Split for a Bedroom: What Size Do You Need?