Navien Smart Plus

This app is genuinely embarrassing for such a big company. It constantly crashes and in the last week (jan 2025) it doesn’t even allow you to log in. Contact customer services and spoke to a technician and he wasn’t even willing to log onto the app himself to see what the app is doing.

We can no longer use the app to control our heating & hot water. The smart plus control indicates it’s pared with our wifi but every time we open the app it says ‘loading’ and then changes to ‘offline’ - useless. Using the thermostat to control everything is very clunky and obviously can’t be used remotely. Customer service extremely unhelpful - suggested it was us and not the app at fault. Not a great experience when a company doesn’t pay any attention to customer feedback.

Had my boiler (and this app) for 2 years now, there’s not been a single update which is surprising as it’s very glitchy. Half the features don’t work, I can turn my heating on and off, and set to holiday mode, that’s it. Even then I have to restart the app several times. Really does need someone to look in to it, but there’s no customer service?

Can’t even sign up and make an account through the app to fully review. Keeps telling me my two passwords don’t match THEN tells me I have an incorrect password. How? I haven’t even signed up. Attempted to log in using both different passwords and obviously tells me I don’t have an account. No option to sign up through web. AWFUL UX !

Tried reinstalling app. But still doesn’t work. Whats the point of paying for extra hardware to make it smart but it doesn’t work. Get your act together devs.

Had the app for just over a month and it now just won’t open. Pointless!

I recently had problems with the App failing. I made contact with their customer service and they were very helpful. I had to make some changes to the settings on my iPhone for the phone to connect properly. I just changed my phone to an IPhone 16 and although I can open the App via the AppStore it won’t actually allow me to put the app on my phone which is very tedious. Navien need to communicate better to their customers or their reputation will be damaged permanently.

This app was working and now instantly closes down when I try to open it??

Doesn’t work or function reliably.

I have been using this App on my smartphone for the last 3 weeks with my new Navien oil combi boiler, on a simple one zone set up. It required a bit of head scratching and experimenting to use but it does do what it says in the functions used so far. Not yet tried geofencing or remote control from outside wifi network, via smartphone. I like the oil consumption indication & hours run which apparently updates after midnight each day, for cumulative totals in monthly period. Consumption is also graphed monthly which will be useful, along with average outside temp of local weather site info. After experimentation and consideration I was able to set up required time programme for hot water and central heating. (Tip- for programme think time on/off.) App works in switching on and off boiler changes and settings remotely within home and is the best way of doing it. Most other water temp adjustments etc are required at boiler site interface. Its OK but needs more work to make user convenient. Disappointingly my old (20+ years) Worcester Bosch control at boiler was easier to use on a daily basis with on/off controls, advance program setting but admittedly more operation at boiler site required and no consumption/hours metering. With the Navien App I was expecting a slicker interface for control and boiler setting changes remotely. Navien please get your software team onto this and create the improvements. It would also be good to see your team react here to the customer comments and instill confidence that you are interested in comment and improvement. Over to you!