From anywhere in the world, check operating conditions, receive status alerts and modify boiler parameters, using a smart device. From a single boiler to an 8-unit cascade system, check operating status or reprogram any boiler function. Wherever you are, you’ll be able to control set points, domestic hot water, reset curves, pump controls and more. Con-X-Us mobile connect will keep you in touch and in control.

What’s New

Version 3.3.3

Added Model Support for KNIGHT XL II and ARMOR II
Correct ARMOR WH model name
Fixed an issue where sometimes the device list would not appear upon login

Ratings and Reviews

3.3 out of 5
16 Ratings

16 Ratings

Goldco ,

A couple odd probs but overall good

Yes, like others reviewers say, there is a landscape lock problem that screws up your phone on occasion, and there is a problem where if you access your boiler via local net then it won’t show up later remote over internet unless you close the app and restart, and vice versa.

Also, I have a strange problem where my boiler shows system return temp at the boiler, but the app always shows zero!!!

However the app, at the end of the day is still really useful, just has a few bugs and also one of the poorest UI’s I’ve experienced. Very difficult to find where things are hidden.

JanWalkerArtist ,

Great concept; info never updates

Update to my review: v 3.0.4 does make a difference because I can now store maintainer info. (Oops. Nope. It started through one logout but then disappeared again.) However, when I try to change operating parameters like setpoints, nothing happens. The update attempts still time out every time. The graph never shows anything. Basically a big disappointment. Try a non-Apple device.
Original review: It got installed and I got registered. Got the board connected but there was poor wireless signal. (Replaced cable modem.) If you can manage wired Ethernet, I strongly recommend that because the app does not report to you if the unit goes offline.
My biggest issue is that the board and the app are not communicating. I can't change settings via the app. I believe this is iPhone/iPad specific. The service techs have been looking at this but can't explain why it doesn't work.
My other complaint is a design issue- many of the values shown on the screens are irrelevant, depending on your system configuration. It is a lot of work to remember which parts of the display are relevant. Too bad you can't customize the app for the actual configuration.

Jbutdorf2009 ,


Allows for remote access and programming for Lochinvar boilers, great functionality and ease of use! I recommend for all engineers and contractors who are interested in, or currently using, Lochinvar Condensing Boilers.

App Privacy

The developer, Lochinvar LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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