HVAC Electronic Components

Industrial HVAC systems don’t run without the right electronics. Whether it’s a rooftop unit, a building-wide BMS, or a high-efficiency chiller, HVAC electronic components control everything from fan speeds to ignition timing. 

When even one part fails, the entire system can grind to a halt.

The HVAC industry depends on reliable electronics to maintain air quality, temperature, and humidity in commercial environments. These components manage voltage, switch power, regulate flow, and ensure system safety. Without them, modern HVAC equipment would be inefficient and unresponsive.

At Summit Electronics, we supply the HVAC sector with current, obsolete, and legacy components needed to keep systems up and running. With over 2 million parts in stock and a global distribution network, we’re the trusted source for industrial HVAC companies, MRO teams, and service contractors who can’t afford downtime.

Industrial HVAC Systems Depend on Reliable Electronics

Electronics drive every major function in a commercial or industrial HVAC system. Fan motors, compressor relays, ignition systems, and thermostatic controls all rely on components that manage power and control.

These components are not optional – they are the backbone of system operations. 

Power semiconductors regulate motor speeds. Relays and contactors control high-voltage switching. Capacitors manage startup torque. In high-usage environments such as hospitals, factories, and data centers, electronic reliability is crucial.

That’s where we come in. Summit Electronics keeps HVAC systems running with the exact parts needed, from control circuits to power regulators.

Electronic Components We Supply to the HVAC Industry

We stock the components used across HVAC systems, from packaged rooftop units to high-efficiency variable refrigerant flow (VRF) systems. Commonly requested items include:

• Relays and Contactors: Switch high-voltage power to blower motors and compressors.
• Capacitors: Start and run capacitors that power fan motors and cooling units.
• IGBTs and MOSFETs: Used in inverters and VFDs to regulate motor speeds efficiently.
• Diodes and Rectifiers: Convert AC to DC for thermostats, sensors, and controls.
• Transistors: Used in switching circuits for power management and signal control.
• Integrated Circuits (ICs): Found in thermostats, microcontroller boards, and sensor modules.
• SCRs (Silicon Controlled Rectifiers): Used in variable output heating systems and motor control.
• Transformers: Step down high voltage to 24V control power for thermostats and safety switches.

If you’re repairing an aging HVAC unit or supporting a legacy system in a manufacturing plant, we can source or ship what you need.

We Specialize in Obsolete, Legacy, and Hard-to-Find Components

HVAC systems often outlast the availability of their parts. When OEMs stop production, you still need replacements. That’s when sourcing becomes a challenge.

We specialize in locating obsolete electronics, stocking legacy components, and tracking down hard-to-find electronics that are no longer in regular circulation.

Our inventory includes discontinued IGBTs, end of life converters, older ICs used in vintage thermostats, and legacy relays from brands no longer in production. These parts are critical to keeping your equipment online without full system replacements.