How much does a relay switch cost for a furnace?
Consequently, what is a relay switch on a furnace?
The electric relay in a furnace is responsible for relaying electrical power to the heating elements and the blower motor inside the furnace cabinet. The heating elements provide the heat to warm the air, and the blower motor sends this warmed air through the ductwork.
One may also ask, how do I know if my limit switch is bad? The most common sign of a malfunctioning limit switch is the continuous operation of your furnace's blower. Just as the limit switch won't allow the fan to turn on until the warm air has reached the right temperature, the limit switch also shuts down when the air cools to a certain temperature.
Also to know is, how much does it cost to get your furnace serviced?
Expect to spend anywhere from about $80 to $100 for a furnace tune-up, but more if repairs are also needed. Many companies offer service contracts or maintenance plans, which may reduce the cost of an annual visit from a pro and provide other benefits.
What is a limit switch on a furnace?
A limit switch is a device that's located under your furnace's supply plenum. A limit switch also acts as a safety device for your furnace. If the temperature inside of the plenum gets too hot, it shuts off the gas supply to your burners to prevent your furnace and heat exchanger from overheating.