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Johnson Controls Announces Newest Version of its SMART Equipment Control Firmware

March 21, 2019

 Johnson Controls has released version 3.4 of its SMART Equipment Control Firmware. The new SMART equipment firmware incorporates a new feature known as Continuous Reset Single Zone Control™ (CRSZ Control). Unlike the typical Single Zone Variable Air Volume (VAV) system operation, CRSZ Control provides precise control of space comfort while maximizing energy savings.

“The CRSZ is a control feature that allows field configuration of a single zone VAV operation and is a unique Johnson Controls feature for the HVAC market,” said Brian Wathen, commercial product manager at Johnson Controls. “It offers added comfort and energy savings by balancing compressor staging and fan speed to deliver stable zone temperature and humidity control.”

Comfort and energy savings are accomplished through the Smart Equipment controller, which utilizes multiple inputs such as Operational Space Temperature (OprST), Supply Air Temperature (SAT) and Evaporator Coil (EC) sensors. These features help control fan speed and compressor staging to provide optimal comfort while using as little energy as possible.

The CRSZ Control operates with the minimum fan speed needed to maximize energy savings and comfort. Based on the percentage of demand for cooling, the CRSZ uses an algorithm that focuses to maintain space/zone temperature with changing load characteristics. This system is a specifiable feature that is ideal for a wide-range of applications.

For more information on the 3.4 version release of its SMART Equipment Control Firmware, visit

Photo Caption: Johnson Controls releases new SMART Equipment Control Firmware with Continuous Reset Single Zone Control™ (CRSZ Control) providing precise comfort control and maximized energy savings.

About Johnson Controls
Johnson Controls is a global diversified technology and multi-industrial leader serving a wide range of customers in more than 150 countries. Our 120,000 employees create intelligent buildings, efficient energy solutions, integrated infrastructure and next generation transportation systems that work seamlessly together to deliver on the promise of smart cities and communities. Our commitment to sustainability dates back to our roots in 1885, with the invention of the first electric room thermostat. We are committed to helping our customers win and creating greater value for all of our stakeholders through strategic focus on our buildings and energy growth platforms. For additional information, please visit or follow us @johnsoncontrols on Twitter.

About Johnson Controls Building Technologies & Solutions
Johnson Controls Building Technologies & Solutions is making the world safer, smarter and more sustainable – one building at a time. Our technology portfolio integrates every aspect of a building – whether security systems, energy management, fire protection or HVACR – to ensure that we exceed customer expectations at all times. We operate in more than 150 countries through our unmatched network of branches and distribution channels, helping building owners, operators, engineers and contractors enhance the full lifecycle of any facility. Our arsenal of brands includes some of the most trusted names in the industry, such as Tyco®, YORK®, Metasys®, Ruskin®, Titus®, Frick®, PENN®, Sabroe®, Simplex® and Grinnell®.  For more information, visit or follow @JCI_Buildings on Twitter.