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What is an HVAC Sequencer?

What is an HVAC Sequencer?

December 13th, 2021


Unless you’re an HVAC professional, chances are you know very little about the inner workings of a furnace or air conditioning system. That’s okay! We wouldn’t expect you to know a whole lot about this. But it’s only natural that you’re curious, and we’re happy to answer whatever questions you might have. Some of the questions we get revolve around the components of an HVAC system and how or why they need to be repaired on occasion.

We would never encourage DIY AC or furnace repairs, for safety reasons, but we’re happy to let you in on what these various components are and what they do. Take the HVAC sequencer, for instance. This is a component designed to stage different parts of the electrical equipment within the HVAC system so that it doesn’t overload and damage the circuits within the system itself or your home’s electrical system. Read on to learn more!

How to Identify an HVAC Sequencer

The sequencer of an HVAC system has a very unique size and shape depending on the system itself. Generally speaking though, they’re constructed of tough metal and are typically quite heavy. They’ll be used for components such as electric pumps, furnaces, and motors.

Features of an HVAC Sequencer

Depending on the type of sequencer, it will have its own unique features. Overall, common features include:

  • The ability to delay a few seconds between sequences.
  • Several various mounting positions.
  • The ability to resist shocks and vibrations.
  • A 24-volt input control.

HVAC sequencers are developed for many different types of jobs, giving them versatility in the features available.

Function and Benefits of an HVAC Sequencer

The sequencer has a very important job in an HVAC system–allowing different gas-powered and electrical-mechanical devices to run seamlessly without overheating. Sequencers enable heat pumps and furnaces to use a portion of their power in segments so that there is always one part of the device on while other parts can be off.

This prevents circuits from tripping or blowing out, motors from overheating, and prevents premature replacement of mechanical components.

Not only that, but a major benefit of the HVAC sequencer is that it enables you to save power on different pieces of HVAC equipment. Your HVAC system can basically run on less power.

The Importance of Routine Maintenance

It’s important to keep in mind, that just like any other HVAC component, the sequencer will eventually wear down. This is why it’s so important to invest in annual furnace and annual air conditioning maintenance.

Professional maintenance allows our technicians to comprehensively clean, adjust, and inspect the components that need it. We alert you to wear and tear that’s occurring–including the sequencer–and we also alert you to repair needs you should have managed before they snowball into a bigger HVAC problem. Maintenance can actually help you avoid up to 85% of the repairs your furnace or AC system may ever need!

If you have a furnace or central air conditioner, you should have maintenance scheduled once a year. If you’re using a year-round heat pump, this should be bumped up to every 6 months.

When you need a reliable Cartersville HVAC company, look no further than Dayco Systems. Contact us today!