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Mysa Smart Thermostat for ACs

The Mysa Smart Thermostat for ACs replaces remotes with displays for most window, ductless mini-split heat pump, or portable air conditioners.

Mobile App – Adjust your home’s cooling or heating from anywhere on your Android or iOS device. Scheduling – Use the app to set a schedule for your thermostat in less than a minute. Geolocation – Mysa uses your location to detect if anyone is home so that you’re not paying to cool or heat an empty house. A Smarter Home – Control Mysa through your favourite smart home platforms and home assistants. Lockout – Enjoy the peace of mind that comes with knowing you’re in control of your preferred temperature setting.

Energy Usage – Mysa shows your AC’s runtime, temperature history, and humidity, helping you find ways to grow your energy savings. Thermostat Control – See and adjust your room temperature, humidity, and control your AC’s fan speed and modes, right at your Mysa. Vacation Mode – Going on vacation? Mysa will save energy while you’re away. Shared Access – Share access to your account easily so others can control your Mysas through the Mysa app.


  • Most air conditioning units:
    • Window
    • Portable
    • Ductless Mini-Split Air Conditioners


  • Conveniently powered via included 5V micro USB connection and plug-in AC adapter.
  • AC/USB adapter included.
    • 5.2 V, 6 W USB
    • 1.2A adapter
  • USB/Micro USB cable included
    • 6 ft / 2 m

Pairing and Control

  • Connects to the internet via your Wi-Fi and controls your AC via infrared signals.
  • Requires 2.4GHz WiFi network and uses optional NFC pairing for seamless setup.

Display / Sound

  • LED display with capacitive touch buttons.
    • Adjustable brightness.
  • Buzzer
    • Audible Touch Feedback.


  • Height: 4.3 in / 110 mm
  • Width: 3.0 in / 75 mm
  • Depth: 0.6 in /15 mm


  • Temperature: +/- 0.4 ℉/0.2 ℃
  • Humidity: +/- 2%

Control Range: Off, 61-86 ℉* / 16-30 ℃*
*control range depends on the AC model, may be 17-30, 18-31, etc.


  • Wall-mounted with adhesive strips OR place on a surface with the included stand.


  • Heat (HVAC only)
  • Cool
  • Auto (where applicable)
  • Fan only
  • Dry / Dehumidify

Modes will be indicated by LEDs on the side of the device.


  • WiFi – 802.11 g/b/n @ 2.4 GHz
  • Supports WPA2

The Editor

Editor - Musician, graphic designer and HomeKit aficionado.

2 thoughts on “Mysa Smart Thermostat for ACs

  • Hi Simon,

    I purchased one of these units about two months ago. It was the second Mysa product I purchased. The first one is the Mysa thermostat for baseboard heaters. That unit has worked pretty reliably for the last couple of years with the only issue being the touch screen being insensitive to finger presses. That was not really an issue since there is very good control through Homekit and the Mysa app.

    I wound up returning the Mysa for AC unit because I could not get it to control my DeLonghi portable air conditioning unit. Setup had several issues that would not allow the setup process complete. Not sure what the issue was but it might have been a software bug. The Mysa unit would not learn the IR signal from the AC Unit remote control. Contacted customer service via a web form and they provided a code to enter directly into the Mysa app that was supposed to be the code for my DeLonghi AC unit. The setup process completed this time and the Mysa unit was added to Homekit with no issue, but there was absolutely no control of the AC unit.

    Contacted Mysa customer service again via email which informed me that they very busy and it might be a few weeks before they were able to send me another code. I asked if they would like to call me and they replied that they did not have enough staff to do that. This was commensurate with the customer service web site which provided the ability to make an appointment to talk to technical support, but over a month away.

    So I had a very cute little brick sitting on my dresser which appeared to be fully functional in Homekit, the Mysa app, and the control panel, but it did absolutely nothing. I suspect that customer service provided the wrong code to me, or that IR programming for numerous different AC units is vast and complicated and that they did not fully implement the ability to control all AC units. That just a guess.

    So I got an RMA authorization with a shipping label and returned the unit. The return process was made very easy by the Mysa team.

    A day later the head of customer service emailed me and offered the unit to me with a full refund if I would keep it and try a few new codes. I informed him that I had shipped it back the day before and thanked him for the offer. I would have taken him up on his offer if I still had it.

    I hope there are some positive reviews on this unit. It seems well made as far as hardware quality control goes. I was impressed with that.

    Customer service could be better. Telling customers they may have to wait weeks for a solution is not really acceptable. It was good to hear from the head of customer service, but that came too late.

    Hope they get the bugs out.

    • Hi Bart, thanks for the info. I purchased one about a month ago, and it arrived here maybe 10 days ago, but I’ve not had time to set it up and test it yet, but I’ll be doing a review once I’ve had a chance to put it to work. If I find any issues, I’ll let you know (via email). The issue with customer service doesn’t sound too great though.

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