Replacing a Furnace Blower Fan Replacing a Furnace Blower Fan
A furnace blower fan is used to move the hot air from the heat exchanger in the furnace to the main ducts in the house. In some cases the furnace blower fan may start to cause noise and hence has to be replaced. Here is a look at the process of replacing a furnace blower fan.
Step 1 – Turning Off the Power
The first step involves turning off the power being supplied to the furnace. This is really important to avoid an electrocution.
Step 2 – Locating the Fan
The easiest way to locate the fan is to open the furnace door and keep it that way. Once the door is opened, you can easily find the location of the fan inside the furnace. The fan is usually located in way that it is easily accessible.
Step 3 – Cutting the Wires
The wires that are connected to the fan have to be cut. The wires have to be cut as close to the fan as possible. Be sure that you don't cut any other wires.
Step 4 – Removing the Fan Bracket
Once the wires are cut properly, the fan has to be removed. It can easily be taken out by simply unbolting the fan bracket from the furnace surface. In case there is something in the way like an electric box one may need to unbolt it first and then access the fan bracket for unbolting it.
Step 5 - Uninstalling the Fan
After the fan bracket is removed, the next step is to uninstall the fan from inside the bracket. Remove the bolts from the bracket which houses the fan.
Step 6 – Be Careful with the Bracket
While the fan is being removed from the bracket, be careful enough not to damage the bracket as it has to be used with the replacement fan.
Step 7 – Finding the Replacement
Next, the fan has to be replaced by a new one. The best way to find a replacement is to use the internet to find the right fan for the furnace.
Step 8 – Installing the New Fan
After getting the new fan, install it back in the bracket. If the bracket is not damaged, bolt the fan back into the bracket.
Step 9 – Installing the Fan Bracket
Install the fan bracket inside the furnace by bolting the fan bracket onto the fan’s surface.
Step 10 – Reconnecting the Wires
The wires that were cut while uninstalling the fan bracket have to be replaced with the new wires that have to be used to reconnect the fan.
Step 11 - Checking the Fan
Once the fan is installed back in it has to be checked whether it moves freely.
Step 12 – Finishing the Job
The last thing to be done is that the furnace has to be attached to the power socket and it has to be turned on to check if the fan works properly.