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 3.2.3

New in v3.2.3:
* Offer to save the user's password on the login screen.
* Hide insignificant block events from device history.
* Increase account device limit to >200 devices.
* Fix missing slider range for Cascade Max Non-Condensing Setpoint on some models.
* Fix two different app crashes reported from the field.

Ratings and Reviews

3.5 out of 5
13 Ratings

13 Ratings

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.

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.

tmpdowd ,

Not 100% Ready for IOS 11.2.5

I installed the software on a iPhone X running iOS 11.2.5. When launched, the software locks my phone into landscape view and won’t release it to escape from the program. I had to shut down my phone. Many attempts to register my unit failed. Unrelated to the software, the barcode and QR Code that you are supposed to scan are not real accessible, making the process difficult. I’m hoping there’s an update because it is a good concept.


Lochinvar Corporation
36.1 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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