ABA Heating and Cooling
Free AC Replacement Estimates!

24/7 Emergency AC Repair
Free AC Replacement Estimates

Understanding Your Furnace’s Limit Control Switch

The limit control switch is an important part of your furnace’s blower system, whose job it is to distribute warm air throughout your home. Yet few homeowners understand the precise role played by the limit control switch. if you would like to improve your knowledge of furnace components, read on. Here you will learn about the job of the control switch, as well as common problems it faces.  Blower Operation Understood at its most simple, the limit control switch turns the blower fan off and on. It knows when to do this thanks to a special built-in thermostat. This thermostat is responsible for monitoring the temperature inside of the furnace. When it detects heat being given off from combustion, it sends a signal to the limit control switch, which in turns starts up the blower fan.  Safety Switch The limit control switch also has another important duty: acting as a shutoff...

Continue reading
  1810 Hits


Click for the BBB Business Review of this Air conditioning & Heating Contractors - Commercial in Austin TX Energy Star North American Technician Excellence Chamber of Commerce Certified

ABA Heating and Cooling