Relays
HVAC Relays are electromechanical switches that regulate the distribution of electricity between devices in rooftop units, heat pumps, and air conditioners. Relays serve as a bridge between low-voltage control signals and high-voltage system functions.
Relays play a vital role in HVAC systems by coordinating a wide range of components from ignition sequences to blower motors. They can activate and deactivate equipment triggered by thermostat signals. Relays play an important role in the timing and sequencing of HVAC operations. This helps systems run smoothly and efficiently. Relays also help reduce manual involvement by automating control....Read more
Red flags relays may be failing are short cycling, overheating, or temperatures that are inconsistent. If relays are making clicking sounds, and the connected components are not activating, this may also be a sign relays are failing. Relays that are stuck open or closed are also indicators that they may be malfunctioning.
Scheduled maintenance should include relays. Tips would be to look for melted plastic or burn marks as well as check for loose connections. Removing dust should also be part of preventative maintenance as it can cause short circuits. Relays should be replaced proactively during system upgrades.
LONG PartsPros partners with leading manufacturers such as Functional Devices, Daikin, and Honeywell. Our inventory offers a wide variety of relays such as fan, time delay, and control relays. Downtime in HVAC systems is critical and that’s why we understand the urgency of fast shipping. Online orders ship within one business day.