Taking VR-500™ power
and technology further.

After more than ten remarkably successful years with our VR-500™, we set out
to take the promise of no-compromise boiler control even further. Applying
everything we’ve learned over the years with our VR-500™, EnTech’s top
engineers developed Stealth™, the ideal and powerful boiler control that’s
simple to use yet encompasses exceptionally sophisticated features.

Mechanics love our Stealth™ system! In addition to everything our VR-500™
offers, Stealth™ provides full control of the system right in the boiler room. As
for building managers, they eagerly demand Stealth™ for their buildings thanks
to its host of high-tech features, brand new e-Lert structure, newly configured
cycle format, and industry-leading security.


To bring you equal parts control and peace of mind, the following boiler
room sensors are included with every EnTech system

Stealth™ represents hardware and software that have been designed together by EnTech. We’ve completely rewritten every string of code to provide the best system for heat control. Even the wiring was completely rerouted for the most efficient performance possible.

While the VR-500™ requires a hardwired Internet connection; Stealth™ can also run 100% wirelessly over your building’s Wi-Fi network. Password protection and a suite of security features ensure only authorized personnel gain access.

Stealth™ makes all information readily available both online and right in the boiler room. Enjoy full access, change any and all settings, and view building along with heating data.

Stealth™ can call for heat on a fully customizable combination of out and space sensors, with the option of adding pressure, and return sensors’ data into the mix. This allows for far greater granular control.

With its all-new touchscreen interface that delivers all critical data at first glance, Stealth™ sets a new precedent for interface consistency throughout the boiler room, the app and the website. Learn it once and be familiar on all platforms.

Stealth™ runs the latest iteration of our powerful mobile app, which offers a snapshot of your entire portfolio – regardless of which buildings are fitted with VR-500™ and which ones with Stealth™. Tap on a building’s thumbnail, and you’ll be taken to the VR-500™ or the Stealth™ dashboard, respectively.

Stealth™ boasts a brand new cycle structure for steam that is based on the space and out sensors along with your choice of additional factors including timer, return, pressure, or the flame. With three modes, Trigger, Cycle and Standby, your boiler cycles are more precise and efficient.

Stealth™ displays the median apartment temperature and information on the boiler status, and even features a warning dashboard. Such readily available information easily informs you of what’s happening in your building.

The brand-new Stealth™ graph features many settings and differential data in the background, providing you with an immediate view into where the temperature needs to be in order to require heat.

An optional add-on to our VR-500™ system, the pressure sensor is included with every Stealth™ boiler control. Its data is implemented into the heat cycle, and is used to monitor cycle pressure. To learn more, click here.