A heat pump is now the most common method of heating New Zealand homes. With winter now in full force it’s safe to say most will be in use to combat the current cold weather.
One feature of relatively new heat pumps is the ability to connect them to your WiFi network and control them from a phone app. Being able to turn your heat pump on remotely as you’re on your way home, or schedule daily timer settings that can’t be easily set from the remote become incredibly handy features to have.
But what if if you’ve got an older heat pump that doesn’t have built in WiFi and an app? There are now a growing number of 3rd party hardware solutions that will allow you to control your heat pump from your phone - several New Zealand developers have even entered the market offering products.
These solutions are all very similar, consisting of a hardware Infrared (IR) transmitter that connects to your WiFi network, and an app that connects to the transmitter, typically via a cloud based server on the Internet. Simply by configuring your brand of heat pump the app can send commands to the IR transmitter which in turn sends the IR commands to the heat pump, emulating the regular remote control.
While many of these solutions work incredibly well there is one downside – the price. Many are well over NZ$200 for the hardware and app.
What if I told you that you could control your heat pump remotely from your phone for under NZ$25? You can.
Broadlink is a Chinese hardware manufacturer who builds IR transmitters and smart switches. Their miniature sized RM Mini 3 is a USB powered IR transmitter that’s perfect for controlling your heat pump, or in fact any other IR controllable device such as a TV, stereo or set top box.
The Broadlink RM Mini 3 is available from a myriad of usual sources of Chinese electronics goods such as Aliexpress, Banggood and eBay, with prices typically between US$13 and US$19 including free shipping to New Zealand. A quick search of TradeMe has shown several New Zealand sellers who are probably just importing this hardware from similar sellers and reselling it with a fairly hefty margin.
I don’t want to directly link to any Aliexpress sellers to avoid anybody accusing me of favouring a single seller. A quick search of Aliexpress will show plenty of sellers across the price range.
The Broadlink RM Mini 3 is USB powered but does not come with a power supply. Any surplus USB phone charger will work fine. Obviously the device needs to be permanently powered, and located within line of sight of the heat pump (or other device you want to control) so the IR transmitter will work.
Once powered up configuration is relatively straight forward. The device will broadcast it’s own WiFi network, so once you’ve installed the Broadlink app on your phone connect to this network. From the app you’ll now be prompted to enter the WiFi SSID and password for your home WiFi network. Once this is done the Broadlink RM Mini 3 will connect to your WiFi network and is ready to go.
Adding a heat pump is also relatively simple. Simply select the menu option to add a device and then follow the prompts on screen – simply by aiming your existing remote at the RM Mini 3 and pushing a button on the remote will allow the hardware to match the IR code with it’s database and know the brand of hardware you have. Setup is now complete.
Controlling the heat pump is now simple. Open the app, select your device and you’ll see a screen replicating your existing remote control.
From the menu you can also configure multiple timer settings across the week. You can configure one off events, or daily events to switch the heat pump on or off.
The Broadlink app is available for both Android and iOS. It’s fair to say it’s not the most beautiful app, or the best designed, but it serves it’s purpose allowing you to easily turn your heat pump on or off remotely.
For those are looking to take things further the Broadlink RM Mini 3 hardware can be integrated with openHAB or Apple Homekit via the Homebridge gateway. Fellow New Zealander Nic Wise has written up a great guide for integrating this hardware with Homekit.
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