Category: Energy Improvements

COACH™: Integrated Chiller Control and Optimization In One


tekWorx recently announced the successful completion of multiple installations of COACH™, an integrated chiller plant control and energy optimization system scalable to plants with as few as two chillers.

Using tekWorx CEO® adaptive control technology to control chillers, pumps, and towers, the COACH ™ continuously optimizes total plant kW per ton. The field-configurable package includes a 17” touchscreen and BMS/web gateway in a NEMA 12 enclosure.

“Traditional optimization systems require a BAS to execute the control function, and the combined cost and complexity is simply impractical for smaller and mid-sized plants,” said Mike Flaherty, tekWorx GM. “Integrating the control and optimization functions not only reduces implementation cost but allows our typical 20 to 50 percent saving rage to be realized in these smaller facilities. ”

Built on an industrial-grade PLC platform, the COACH™ uses adaptive control algorithms to maximize plant efficiency in real-time with no ongoing manual tweaking. Fully interactive HMI screens, data logging, trending and alarm handling ensure the COACH™ is both user-friendly and metric-driven.

About tekWorx

Founded in 2000, tekWorx is a leader in chilled water plant optimization. Using proven adaptive control algorithms, tekWorx solutions ensure the most efficient combination of plant equipment is operating at its most efficient point. The tekWorx CEO® solution often eliminates any need for new equipment or plant expansions.

For more information on tekWorx, please visit us at

How Demand Control Ventilation Can Reduce Energy Costs


In spaces that have widely varying levels of occupancy, demand control ventilation can reduce energy use and costs.

This is especially true in spaces that are unoccupied for significant stretches of time-think churches, large auditoriums, and even offices and retail spaces to a large extent. Despite that fact, most HVAC systems are designed to bring in the same level of outside air and do so continuously, a significant waste in respect to both energy and money.

To combat such inherent inefficiencies, demand control ventilation strategies can be implemented to bring in outside air only when needed. In a nutshell, demand control ventilation relies on the fact that humans produce carbon dioxide. Demand control strategies therefore hinge on installing sensors to measure carbon dioxide levels-when levels rise, more outside air is brought in and, you guessed it, when levels fall, the amount of outside air brought in is reduced.

While it seems simple, demand control ventilation strategies can seriously reduce energy costs due to the fact that outdoor air has to be conditioned by the HVAC system and less air, then, has to be moved. Something to think about!

Replacing v. Upgrading Your BAS Network

to be or not to be
To replace or not to replace…

Wondering whether it’s more practical to replace your existing building automation system or to upgrade it? Consider three major points in favor of biting the bullet and replacing your BAS.

  1.  Moore’s Law: Holding on to your old system may limit its ability to perform.  New systems have expanded capacity, capability and can streamline data readings from multiple interfaces into a single, comprehensive system. Wireless technology has helped to reduce installation costs while increasing system flexibility. New systems are often less expensive than their dated counterparts once were and much more user friendly.
  2.  In-house Integration: Depending on the life of your other functioning equipment, replacing your BAS with a newer system may allow a more robust interaction among instruments. Upgrading an existing system may bring system features and facility needs into closer alignment, but will never be as close as that of a complete replacement.
  3.  All Good Things Come to an End: Eventually, your BAS will become obsolete-the trick is to determine whether it already is. Evaluate whether the system has some life left or whether it’s best to reset the clock now before the compatibility window has been shut.

    tekWorx CEO® can optimize your chiller plant by either becoming your plant’s brand new BAS, or by simply acting in a supervisory manner to coach your existing system to operate more efficiently.

Ohio Scores High in Energy Efficiency in 2013

Every year the American Council for an Energy-Efficient Economy ranks cities and states in terms of energy usage and savings to score the states’ consumption rates, denote improvements, and outline policy initiatives. For 2013, tekWorx home state ofOhio ranked 18th overall with pronounced recognition for its energy improvement implementations. One contributing factor was the capital city of Columbus. The city scored a new rating as the 19th most energy efficient city in America thanks to strict adherence to utility policies, appliance standards, building codes, and vehicle policies.

As a company located in Ohio and focused on commercial energy efficiencies, tekWorx also works to advance the state of Ohio’s energy efficiency. Through mechanical and hydronic evaluations, utilization of existing plant equipment and adaptive control technology, tekWorx strives to reduce energy in Ohio and beyond.

For examples of tekWorx energy reductions check out our Case Studies into energy efficiency.