I don't really know what I'm talking about. Pardon my terminology.
My air handler started making some noise last week. The a/c guy came
out and said I should replace the handler for $1650. I'm not in a huge
rush to do that.
Playing with it myself, it looks like the motor is spinning, but the
fan blade (what do you call it?) isn't keeping up.
The fan is bolted on to the motor. The piece (around the axel) that the
bolt goes into spins freely independent of the axel. That doesn't seem
I'm trying to take the fan off the motor and can't get it. I took the
bolt out and thought it would slide from there, but I can't get it to
budge. Is there a trick to this, or is just about brute force and/or
the right tools? I can get the pice to spin on the axel, but not slide
In the end, I hope that all I need is a new fan. As far as I can tell,
the motor is fine.
I can turn the hub independent of the wheel.
I got the wheel off the motor. I can hold the hub still and spin the
wheel freely about my hand. I'm assuming that's bad?
The next trick is finding the replacement part. I can't find anything
about this model. The air handler is a FIRST CO 48TVDX10-HP, with a
wheel part number of W37. Any suggestions on how to find a replacement?
Thanks for your help.
If the blower housing and motor are ok, then you can probably just buy the
blower wheel (aka fan part thingy). You need to know the diameter and width.
(Most residential are for 1/2" motor shafts.) Your best bet is to take it to
your local HVAC supply house, if they don't have one, they can order it.
Graingers also sells a few made by Lau Industries (aka Lau Conaire).
Lau also makes a full line of replacement blower wheels & parts.
The technician should have at least given you the option of repairing your
blower. If it was late on a Friday, he probably didn't want to be bothered.
After this is all over, find yourself a good HVAC company. Depending on the
age, it might be time to replace the system before other (more expensive)
parts start to break.
If you've got a buddy who welds, ask him to see if he can tack weld the
hub onto the fan wheel end plate .... and it'll be almost as good as
new. As long as he keeps the welds small and evenly spaced around the
hub, it shouldn't affect the balance enough to worry about.
I had a blower wheel like that fail on me with a circular crack almost
all the way around the hub part. I decided it was better to replace it
with a new one, despite having to pay nearly $80 for it at a local HVAC
supply place because it was winter and I couldn't wait the time needed
to buy one on line for about a quarter of that price. (As Confucious
reportedly said, "When rape is inevitable, just lie there and try and
enjoy it." <G>)
I've got a name I could call that a/c guy of your, but it wouldn't be
polite. He should have charged you an hourly rate for all his travel and
the time it took to diagnose an obviousity, go out and buy the fan
wheel, and come back and install it. I'm not against any workman getting
paid for his time and knowledge, but trying to sell a customer with a
whole new air handler because of a not uncommon simple problem like that
is just plain wrong.
Now, if you failed to mention that there were other parts dying which
the a/c guy pointed out were going to turn the whole air handler into
trash shortly, disregard the preceeding paragraph.
He can try to get it welded, but there's a very good chance it will be out
of balance or bent and will wobble. In addition, any time you weld
something, the outer part of the heated area is weakened. The only time to
weld a hub on, is in an emergency. I suspect that the unit is old, and
should probably be replaced anyway. The tech might have told him it could be
fixed and given him a price, which he failed to mention here. Never drop a
dime on anyone, even if you heard both sides of the story, unless you were
right there when it happened.
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