Armstrong Johnson Air ease Efficiency Ultra 90 Draft Inducer 115 Volts # FB-RFB547

No complaints about this product. I have a Lennox G26 and this product is a solid replacement. It is a simple DIY project. The original fan was 16 years old and was making a noise as if the bearings were beginning to wear out. Similar products are available such as Fasco and also a Lennox-approved product (which IS the Fasco product but packaged by Lennox). If you have an HVAC company replace this item in your furnace they will charge over $400 for the Lennox-approved unit plus a fee for the service call. I am glad I took a chance as it has worked out well. Time will tell if this will last as long as the original. Note that I contacted ROTOM and asked where the motor was manufactured. I was told the motor was manufactured in Mexico by Fasco.

I used this part to replace the Lennox G26 High Efficiency, 68K21 Inducer Blower Unit. It is built by Rotom Canada...and worked perfectly!This fixed a Lennox Elite G26Q4/5-100-3 furnace startup issue that stopped our being able to move into a new house. The part did not come with the restrictors but did come with gaskets (that I did not use). I reused the restrictor (was blue in color) from my existent bad blower unit.On the part that went bad in my furnace and was replaced by this blower. On that part the impeller was completely destroyed, This cause no pressure change and the furnace pressure sensor would never trip.The root cause issue wasn't something wrong with this (1997 vintage) furnace when I bought the house. Rather the technician who came by after settlement to fix a broken condensate line nipple, accidentally glued the condensate line shut. So the condensate water backed up into the blower inducer unit and damaged the bearings...they likely went bad in a matter of days. Once the bearings went bad, the spinning fan blades went off-axis and destroyed themselves.

Combustion Blower Motor was whining and getting very warm to the touch while running. I suspect the bearings are worn out on this 2000 or 2001 (19 or 20 years old) Lennox G26Q3/4-100-6 furnace. The name plate on the motor says Fastco No. 7021-9550 Type U21B Couldn't find this # on the internet this so went to Fastco website and it now is cross referenced as A163 which is what I found here on Amazon. Paid $76 for Roton #FB-RFB547 which seemed very reasonable. It came in two days, thank God because it's been 0 degrees Fahrenheit at night and the whining is getting louder in the old furnace.It was very easy to install. It was a perfect fit, but the old blower has an additional plastic ring where the air enters from the fire box. This unit comes with an assortment of foam seals and I wasn't sure which to use. Since the new motor doesn't have this extra plastic ring, I used the 1/8" black foam seal. Bolted everything back together and it made a scraping sound inside the fan when I turned it on. I got louder and louder as the furnace ran. I loosened the 4 nuts that hold the motor to the fan housing, realigned while running and retightened the nuts. Better, but after a short time, it started scraping and grinding again. I removed the unit from the furnace and this time used only the thin white seal. This was the same as what the original blower used. Put it back together and it's running quietly as expected. It has been installed and running off and on for a few hours now. Hopefully it will last a long time like the original.

Easy to install, don't pay someone $400 to fix your inducer. Take off four screws, a tube, and a hose clamp and do it yourself! Plus you'll learn about your furnace in the process. This one fit perfectly in my Armstrong SX90 Ultra and works great. Good to have heat again.There were telltale signs that the old one was about to fail, there was some sort of liquid dripping out of the old one for several years before it gave out. Must have gotten onto the rotor and locked up the motor.

Nice replacement inducer fan for a fraction of the cost of OE . Works perfectly as designed and the only reason for 4 stars is it's just a tad louder than OE. Basically a five minute change out from old to new, all gaskets were included and plug & play, it's that simple. Can't go wrong, great product and great price and super fast shipping when I needed it in winter..Burrrrr cold.