Locating Your Transformer

This is often the hardest part of installation since builders can put them in many different locations.  This guide will help you locate your transformer so you can finish installation quickly and easily.

 
 
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Near your HVAC unit

The most likely place for your transformer is near your HVAC unit.  The HVAC unit is typically installed in one of the following locations:

  • Basement
  • Attic
  • Garage
  • Closet

Once you have located your HVAC unit, look for a switch or junction box mounted to the side.  The transformer would be mounted to that switch or junction box.

 
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On your breaker panel

If your transformer is not mounted to your HVAC, the next most likely location is the breaker panel.  Your breaker panel should be easy to locate.  It can be in many different locations including the basement, garage, hallway, closet, or even outside.  Just look for a metal box that looks like the picture to the left.

 
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In your Basement, Garage, or Attic

The transformer could also be mounted in your garage.  If it is in your garage it was installed here because of the convenient proximity to the doorbell.  Check the garage wall closest to your front door.  You will be looking for a junction box with the transformer mounted to a blank plate.