When choosing a replacement fan blade, it is best to use the OEM
specified replacement. There is more to fans than just their diameter and
the number of blades. There is also other factors, like blade pitch and
blade surface area. Using an incorrect fan on a condenser or heat pump can
actually affect the efficiency of the unit and can even cause other
performance problems. If you need help choosing a replacement fan blade for
your Lennox, let one of our parts specialists help you .
to contact our parts department.
Fortunately, most fans
can be removed without too much work. Here's a little trick. First, NEVER beat on the shaft with a
hammer. Clean the shaft with sand cloth before you ever start. Remove the set screw(s). Add a little light oil (or rust buster) to the shaft. Let the oil run
down into the hub if possible. Then, you usually can grab the shaft with a 8 or
10" adjustable wrench.. adjusting the wrench so that it closes on the flat of
the motor shaft. Only do this on the motor side of the fan.... between the motor
and the fan blade. Once you have the adjustable wrench tightened down on the
flat of the shaft, grab the fan with one hand while you hold the shaft with the
adjustable wrench. At this point, you want to hold the shaft while you twist the
fan back and forth. If you ever get the fan broke loose, you can usually work
the fan off of the shaft with a continual back and forth action while you are
pulling the fan off of the shaft.