Open Source Projects

opentrv logo

I’ve come across a number of open source projects aimed at home automation and smart heating control. The first I found is OpenRemote and then OpenHAB came along that offers even more flexibility. The new generation of smart controllers I mentioned in the welcome post have proprietary TRVs, but the OpenTRV project aims to bring control to individual radiators or zones. There’s also a project to control Heatmiser WiFi thermostats and a German one for Worcester’s Heatronic 3 system.


Cosy is another start-up that I heard about recently. Doesn’t yet do heating zones but does do boiler control and smart sockets. They’ve reached their Kickstarter goal and seem to be pressing on with new features.

Pegler i-Temp

Have just discovered Pegler Terrier i-Temp products, don’t know much about them and unfortunately there’s not a lot of information on the site. The intriguing thing is they mention a PC Programming dongle with some software to control the individual TRVs, but that’s about all they do say.

Update: I asked the manufacturer about the PC dongle and they pointed me to a different website. Even though the page is entitled ‘New Accessories’ the PC dongle is only “Compatible with Windows XP or Windows Vista operating systems.” It would appear that you can program multiple TRVs using the PC application, but there doesn’t appear to be any live control or facility for using a smartphone.


This site is intended to be a resource for the gathering of information about Smart Controllers for domestic central heating. I found when I started researching these devices there was nothing similar so I hope this fills a useful gap. I’m sure there are quite a few installers who have a lot of valuable information and I hope they will be willing to share some of that.

I have so far only installed a Worcestershire Bosch FW100, which I’ve discovered isn’t as smart as I hoped. Others I’ve heard about include the Heatmiser PRT-TS, Climote, Tado┬░, evohome. I should also mention the eTRV, which while it isn’t a controller as such claims to be a smart(ish) control for individual radiators.

I hope to include much more information as time goes on. Enjoy!