Controls

A Small Speed Reduction Can Produce Major Energy Savings

Under the fan and pump affinity laws, the power required by many centrifugal fans and pumps changes roughly with the cube of their speed. In theory, reducing motor speed to 80% can lower power demand to about 51%—one reason VFDs can significantly improve HVAC efficiency.
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Smarter Control of Building Performance

Modern HVAC systems depend on advanced controls to regulate temperature, airflow, humidity, pressure, and equipment operation. A properly designed control system helps building owners and facility managers maintain comfortable conditions, improve system efficiency, identify performance issues, and respond to changing demands.

NJ Mechanical provides HVAC controls, building automation, variable frequency drives, and system diagnostics throughout Northern Illinois, Central Illinois, Chicagoland, and Southern Wisconsin. Our experienced union professionals help ensure that mechanical equipment and control components work together as one coordinated system.

Our HVAC Control Services

HVAC Controls & Building Automation
Building automation systems provide centralized monitoring and control of HVAC equipment throughout a facility. NJ Mechanical installs and integrates control systems for boilers, chillers, air handlers, rooftop units, pumps, ventilation equipment, and other mechanical components.
These systems can help facility teams manage operating schedules, temperature setpoints, equipment staging, alarms, and overall system performance from a central interface.
Variable Frequency Drives
Variable frequency drives, commonly known as VFDs, regulate the speed of electric motors based on actual system demand. Rather than operating continuously at full speed, pumps, fans, and other motor-driven equipment can increase or decrease output as conditions change.
NJ Mechanical installs and replaces VFDs for HVAC and mechanical equipment, helping facilities achieve more precise control, smoother equipment operation, and improved energy efficiency.
System Diagnostics & Troubleshooting
HVAC control problems can cause temperature fluctuations, equipment short cycling, communication errors, unnecessary energy use, and unexpected system shutdowns. Our technicians evaluate control sequences, sensors, wiring, actuators, VFDs, and mechanical equipment to identify the source of the problem.
By examining the entire system—not just a single component—we can determine whether the issue originates with the controls, the mechanical equipment, or the way the two interact.
Connecting Controls with Mechanical Expertise
Effective building control requires more than programming. It requires a thorough understanding of the mechanical systems being controlled.
NJ Mechanical combines HVAC and mechanical expertise with control-system knowledge to help equipment operate as intended. Whether upgrading an existing facility, integrating new equipment, or resolving a persistent performance problem, our team provides practical solutions designed around your building and operations.

Take Greater Control of Your HVAC System

 

Looking to improve system visibility, equipment control, or overall HVAC performance? Contact NJ Mechanical to discuss your controls or building-automation needs and request a quote.