prostar energy

HVAC+R Solutions

Catalyst - A Complete Retrofit Solution

No matter the stage of your energy efficiency strategy the CATALYST can meet you where you’re at.

  • Smart Variable Frequency Drive (VFD) for those looking for supply fan control. Includes CATALYST ventilation and equipment protection features.
  • Full-featured CATALYST with Tridium BMS scheduling and comfort control of HVAC with optional lighting and portfolio asset management resources.
  • Building Automation Solution with web-based visualization of RTU efficiency, system performance, fault detection, and energy accountability tools.

Multiple sensors protect the HVAC unit against airflow deficiencies, which can cause refrigerant flooding, coil icing, and high temperature conditions.

Opti-Run Fan Control reduces fan speed when no heat or cool calls are present for dramatic energy savings

Prior to allowing heating or cooling operation the CATALYST checks for a positive indication that the fan is running

The CATALYST monitors smoke/fire detector signal to provide positive shutdown of the HVAC supply fan even if the VFD has been placed in a local control override.

The CATALYST assures code compliance and proper ventilation with synchronous control of the outside air damper position in conjunction with fan speed variations.

Enhanced Ventilation Control can be used to increase fresh air volume in the space, reducing the risk of airborne virus transmission

The CATALYST comes equipped with a Service Switch that allows technicians to cycle through operating cycles to quickly diagnose issues

When connected to the eIQ Platform the CATALYST BMS can send configurable email alerts on a number of equipment and comfort conditions

Bay Air
“In over 40 years of experience in the HVAC industry, this is the best product I have ever seen for Packaged Rooftop Units."
John Morgan, Owner, Bay Air Systems
"Through the test installations, BJ’s has confidence in the operational concept that the CATALYST provided, and the energy monitoring backs up the savings claims."
Kevin Moran, Manager of Utility and Energy Services, BJ’s Wholesale Club
"The significant energy savings and quality installation processes are just two of the reasons we selected the CATALYST as our partner for RTU retrofits across the United States and Canada."
Mike Ellinger, Whole Foods Market, Global Maintenance & Refrigeration Coordinator
"Multi-speed fan operation, demand-controlled ventilation, and peak demand saving capabilities exceeded expectations. NREL sees it as a mature, reliable retrofit technology combining energy efficiency and automated demand response for the small to medium size retail market."
Dr. Michael Deru, Engineering Manager National Renewable Energy Laboratory
"Based on the demonstrated energy savings and generally favorable payback, we believe the CATALYST is now a viable option for utilities to consider for inclusion in incentive programs."
Spenser Sator, Product Manager, E Source Technology Assessment Service
“We have been impressed with the benefits of the CATALYST technology. Along with a 40% reduction in HVAC energy use, we are benefiting from the Automated Fault Detection & Diagnostics alerts which enable us to proactively schedule service calls when dampers and economizers are not working correctly, a common issue which typically goes unnoticed and contributes to higher energy costs."
Paul Goodman, Owner/Operator, McDonald's
"It's very expensive to do business in the state of Maine, and the opportunity for us to manage our power and utilities makes us more competitive. We're really pleased with the results. We're actually exceeding original expectations."
John Brooke, President & CEO, Maine Machine Products
“The short time we've had the CATALYST system, we've noticed substantial decreases in our electric bill, more efficient units, and an array of graphs and charts that will monitor actual usage and temperatures so we can see savings immediately
Jim Froio, Franchisee, Burger King
"The results of the CATALYST energy management system have just been wonderful. It shows you actual reports of the energy you were using versus what you are using now."
Susan Schneiter, Director of Environmental Compliance, Aptar Group, Inc
“… in 2020, Wendy’s installed the CATALYST HVAC upgrades and ventilation control solutions at 79 Company-operated restaurants. The CATALYST reduced the HVAC energy needed while improving the temperature, ventilation control, and overall comfort. Our initial pilot locations have now been in operation for one year, with energy use down 15% and GHG emissions down by 10% in 2020 compared to 2019.”
Wendy’s 2020 Good Done Right Report

Catalyst Lite

More than just a Variable Frequency Drive (VFD)

CATALYST Lite  is a powerful energy efficiency upgrade kit that converts constant volume HVAC systems from single-speed to variable-speed, reducing fan energy use by an average of 70%. It is unlike any other product on the market and offers key benefits that are not available with a simple VFD or drive product. As part of our CATALYST solution product line, CATALYST Lite  maintains our commitment to basic system protections and proper ventilation, unlike simple VFDs or low-tech drive products on the market.

Ideal for Integration with Existing BMS Systems

Clients who often benefit from CATALYST Lite  usually have multiple sites and/or a portfolio of properties already managed by a building management system (BMS). CATALYST Lite  can easily be applied in just a few short hours to any packaged rooftop unit (RTU) with a 3-phase supply fan motor. CATALYST Lite  can typically be transferred from one RTU to another of the same size and horsepower with no additional programming needed. This is extremely beneficial to clients with aging equipment nearing end of life. These older RTUs can still be retrofitted along with newer units and deliver energy savings for years to come.

Utility Rebates and Incentives can pay for CATALYST Lite

Utilities across the country offer incentives for CATALYST installations. Some will cover 100% of the cost of a CATALYST Lite installation leaving you with ROI from energy savings on Day 1.

Why choose CATALYST Lite over a simple drive product?

The CATALYST Lite is a variation of the patented, award-winning CATALYST, the leading RTU Retrofit solution and the only product validated and tested by the U.S. Department of Energy, proving a average energy savings of over 55%.

Protects the HVAC unit against airflow deficiencies, which can cause refrigerant flooding, coil icing, and high temperature conditions.

Recognizes economizer cooling calls, not just mechanical cooling calls, and increases fan speed.

Monitors smoke/fire detector signal to provide positive shutdown of the HVAC supply fan even if the VFD has been placed in a local control override.

Checks for a positive indication that the fan is running prior to allowing heating or cooling operation.

Assures code compliance and proper ventilation with synchronous control of the outside air damper position in conjunction with fan speed variations.

Integrates with most existing building automation systems to allow drive reset, fan speed override, or speed indication.

Installed by trained local technicians rather than roving installation teams, for long-term support to end-users.

EIQ Platform/BMS SOlutions

CATALYST controllers can operate as stand-alone units or wirelessly networked together using the eIQ Platform, our web-based tool to remotely monitor comfort and performance.

Energy Manager Today awarded the eIQ Platform Product of the Year for 2019

Some comments from the Judges:

  • “Providing both fault detection and diagnosis for rapid response as well as M&V of energy savings, this system would seem to enable good energy management and support continuous commissioning.”
  • "Fault detection and catching issues before they occur is clearly a valuable tool for all energy managers. The embedded smart intelligence features and fault detection capabilities are impressive.”


Using the eIQ Platform portfolio managers can quickly determine which locations, out of 100’s, have comfort or performance issues. Easy filtering to highlight specific issues including Comfort, Heating Failure, Cooling Failure, and Communication issues. Quickly drill-down from a Portfolio view to see issues at a specific location or to an individual HVAC unit.

Internet of Things (IoT)

Internet of Things (IoT) is the nucleus of an operation with 24/7 control and visibility to manage energy from anywhere. Automation eliminates wasted energy and allows you to make fully informed business decisions.