With our furnace blower replacement guide, you can do it yourself and save. The typical service call for a hvac technician to do this would cost several hundred dollars but you can save most of that money by doing it yourself. Our guide will walk you through the process of diagnosis, motor selection, and replacement.**NOTE** ONLY YOU CAN ASSESS YOUR ABILITY TO PERFORM THIS TASK. THIS IS A GUIDE AND CANNOT PROVIDE ALL THE DETAILS FOR EVERY SITUATION. Most modern furnaces use a direct drive blower motor. Therefore this guide is for that type of furnace blower. The testing and diagnosis would be the same for a belt drive blower but the replacement process would be different. If you suspect your motor is bad, you should check to make sure before you replace it. Begin diagnosis by shutting off the power to the furnace. Then, try to spin the blower by hand. If it will not spin freely, check to see if it has oil ports on the blower. If it has oil ports, you should add a few drops of oil to see if it helps the motor to spin freely.

If there are no ports or it still does not spin freely after adding oil, the motor should be replaced. If the blower spins freely, feel the motor to see if it is hot. If the motor is hot to the touch, allow it to cool. Check all the wire connections to ensure they are tight, check the run capacitor and replace it as necessary.Then you can check to see if the motor works properly. Turn the power back on and turn the fan on at the thermostat. If the blower does not start or fails to get up to full speed, shut the power back off to the unit and continue with furnace blower replacement. To begin the removal of the old motor, you should write down the motor wire colors and where they are connected. Then you can disconnect them. On newer furnaces they will be connected to the furnace control board by spade connectors. Most older furnaces have a wiring control box with a relay and the wire connections.Next, you should remove the bolts or nuts that hold the blower assembly in the furnace.

This is typically two nuts or bolts towards the front of the blower assembly.Then, you can slide the blower assembly out of the furnace. To remove the motor from the blower assembly, start by loosening the set screw that attaches the wheel to the motor. Then remove the motor mounting bolts which hold the motor to the housing. You should be able to pull the motor out now.After you have the motor out, you should remove the mounting bracket from the motor. Be careful to note the orientation of the motor in he bracket.**NOTE** Some older units have the mounting brackets built into the motor. If this is the case, you will need to purchase the exact replacement or a motor and an adapter kit. Now that you have the motor out, the next step in furnace blower replacement is selecting the proper replacement. Many motor manufacturers have web sites where you can take the number off the old motor and find the exact replacement. You can purchase your replacement motor through our parts store on Amazon.If you are unable to find the exact replacement, you can usually use a universal replacement.

Here is what you should look for and match:1. type of drive( direct or belt)2. motor diameter in inches (3.3, 5, 5.5, 6.5)4. horsepower (1/4, 1/3, 1/2, 3/4, 1)5. speed in rpm 6. number of speeds available7. direction of rotation (it is best to get a reversible one)8. mounting method (typically a belly band)9. 3 ton ac unit 13 seersize of run capacitor requiredcar ac repair carrollton tx To put the motor back in, simply reverse the removal procedure.car ac repair milton flSome key things to ensure proper installation are:1. Before you secure the wheel to the motor, ensure that the wheel is centered in the housing.2. Ensure that you have selected the proper rotation direction.3. Any unused motor leads should be individually isolated using wire nuts and/or electrical tape.4.

It is a good idea to replace the run capacitor any time a motor is replaced.5. After you have finished, you should complete your furnace blower replacement by checking for normal operation. Listen for noises and check to ensure that air is coming out of the supply registers.A typical HVAC service call to replace a Trane furnace blower motor can cost upward of $300. The good news is that you can do it yourself with a replacement motor and the right tools, all of which are readily available on eBay, plus a bit of HVAC expertise. Be warned, though, that replacing a furnace blower motor is dangerous; if you're not careful as well as qualified to replace the blower motor, you can cause irreparable damage to you, your belongings, and your home. Trane replacement blower motor Power off the air conditioning and heat. Disconnect the thermostat, or simply remove the battery from it. Turn off the power from the electrical panel. Power off the emergency HVAC power on the furnace.

Remove the cover panels on both the top and the bottom of the air handler and Trane furnace unit. After the covers are removed, consider taking photos of the inside setup. Without touching the capacitor terminals, take photos of the wiring, controller, and capacitor to use later for reference purposes. Unscrew the two screws holding the top panel door switch in place with a hex wrench (5/16" size). Unscrew the two screws holding the controller in place with the hex wrench. Pick up the controller and set it aside. Consider taking photos of the wiring setup around the area of the removed controller for reference purposes later. Put the rubber gloves on and remove the rubber boot and capacitor from the wiring. Discharge the capacitor manually or simply let it sit for a few hours to discharge it. Unscrew the two screws holding the furnace's fan shroud in place by using a socket (3/8" size). Slide the furnace's fan shroud out and note the arrow on the housing.

The arrow tells you which direction the fan turns (you'll need to replace the housing in the same way, so it will rotate in the same direction). Remove the square locking nut on the left side of the housing shaft using pliers. Unscrew the three screws that are holding the motor mount bracket in place using a socket (5/16 inch). Tap on the motor shaft gently with your hammer to loosen its hold on the shroud. Unscrew the six screws holding the mounting bracket in place, and then remove the bracket and motor. Unscrew the screws holding the bracket legs onto the motor. Remove both the top and bottom brackets. Remove the bushing that was on the bottom bracket. The new blower motor comes with one, so you won't need the old bushing. Compare the specifications of the old blower motor to your new one's; ensure that they match exactly. Slide the new blower motor into the bottom bracket. Connect the top bracket to the new blower motor. The alignment of the screw holes on the legs of the bracket might require shortening.

If you shorten them, they will need to be re-installed. This will depend on the replacement blower motor you selected. Cut the excess from the spindle stubs from the screws with a hacksaw. Line up the flat end of the spindle with the fan shroud and place the blower motor in, reattaching the screw. Spin the blower motor gently to ensure that it's balanced. It should not touch the shroud. Reattach the grounding wire to the blower motor; it will be green. Follow all disconnect steps at the beginning of the instructions in reverse to reconnect, re-install everything that you uninstalled, and power on your furnace with your new furnace motor. Complete the installation by checking it to ensure it's operating correctly. Check your airflow registers to make sure that heat is blowing from them, and that there aren't any irregular noises coming from the unit. There are some noises that may mean you installed something incorrectly, including banging noises when it's powered on, scraping or clunking noises, and squealing noises.

If you hear any of these sounds, you may want to call a professional to inspect your unit. How to Maintain Your Heater Image How to Maintain Your Heater Your Guide to Buying a Gas Furnace Image Your Guide to Buying a Gas Furnace Top 10 Gas Furnaces Image Top 10 Gas Furnaces Furnace Buying Guide - What You Need To Know Image Furnace Buying Guide - What You Need To Know Furnace 60K BTU 95% High Efficiency New Trane gas Up Propane kit avlbl #2014 Image Furnace 60K BTU 95% High Efficiency New Trane gas Up Propane kit avlbl #2014 Trane XR80 Gas Furnace TUD080C948K0 - Local Pickup Only Image Trane XR80 Gas Furnace TUD080C948K0 - Local Pickup Only Furnace 100K BTU 95% High Efficiency Trane gas Propane kit available #4005 New Image Furnace 100K BTU 95% High Efficiency Trane gas Propane kit available #4005 New Furnace 80,000 BTU Trane Downflow 92% AFUE Image Furnace 80,000 BTU Trane Downflow 92% AFUE TRANE TDC1D120A XB90 Single Stage Gas Furnace Image

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