Very limited. You can basically set your heating on/off manually or adjust the timer. In a world of digital controls this is pretty basic. For example, what about setting the hot water temperature in the app. Or at least telling me what it’s set to. What about trending data, such as cylinder temperature? Come on you could do so much more!The more recent update includes new “optimisation” settings which appear to randomly switch your heating on and off in advance of your schedule. Anytime you alter your schedule time or temperature then you risk an optimisation coming in (especially if you don’t answer to say ‘no’ optimisation for example by just closing the app, it defaults to putting an optimisation on). It’s also frustrating that once you make any manual adjustment to the system. For example to stop it running when it’s randomly come on, you are then unable to alter any of the systems settings without cancelling the override.All in all an update which just includes extra frustrations. I’m not sure if or how Ideal developers reach out to their user base to see what the users might like, but so far the updates seem like developer ideas rather than improvements that an end user might suggest.—— Update 23 June 2026. For about two months now and despite updates the app no longer works to update the timed hot water schedule. So this bare bones app is even less functional. Who actually tests this? Do ideal engage with their customers over the app?

On the whole this app is very good. Being able to control the heating at home from anywhere is brilliant. There have been many times in past when we’ve all left the house for the day and unnecessarily left the heating on. Not anymore. It does occasionally kick me out of the app and I have to sign in again. I can’t work out if this is completely random or after a long period of not opening up the app. I would like the time to be featured on the home page of the app. I know I have the time on my phone, but I want to know that the app/stat/boiler has the correct time too. It’s currently Easter Sunday morning and I have no idea if the stat time has gone forward an hour. I assume it has, but that’s all it is, an assumption. Without physically being at the stat to check, I have no idea. The whole idea of the app is so that you don’t have to physically be at the stat. Please add the time to the next update.

I hardly ever score one for a nap, but this is probably one of the worst apps I’ve ever seen. It gives you no flexibility over what you want to do. It gets the system doing things that you don’t want it to do. Let me give you some examples so I don’t want to use any power between four and seven in the evening so I want to use the minimum amount of power from 10 till one and I want to use the maximum amount of power. From octopus cheap times but this does not let me do that in a sensible way it keeps on deciding as I want the temperature at 21 in three hours time it’s going to put the thing on. It’s terrible I could write reams about this it’s just dreadful. It’s going to cost me quite a lot of money. I’d be very happy to talk to the people who developed the whole halo ideal system of managing the heat pump. This does not do it well.

After using the brilliant Nest for years, I changed the boiler and was told I needed to use Halo thermostat so it could control it properly. Firstly has to run on AA batteries, no mains power, connection to boiler constantly drops, over 70 times in 3 months. App scheduling is woeful, not sure how it could be designed so badly, all you want to do is set an on time and an off time. Don’t turn on weather compensation as if you do you cannot turn it off again! Finally if you touch the phone screen anywhere when on thermostat mode it turns on override mode with a temperature of 26 degrees. Seems these complaints have gone on since 2023 but no App update to resolve it. Online chat support is useless as eventually they tell you that the tech desk needs to phone you. If you miss their call don’t bother leaving a message as they then send you an email to say the messaging service doesn’t work and directs you back to online chat to start the process all over again. Avoid!