A few months ago, I wrote about working on sister-in-law's heater. Earlier in the week, with a cool Spring day as an advantage. I tackled my air handler, which services the heater and air conditioner.
Removing the blower was fairly easy, except for one very hard to reach sheet metal screw. Replacing it was much easier, since I had a better idea on how to get to that area. After removal, I brought it outside, turned it to where I could reach the blades, and went to work.
Squirrel cage blowers are a fantastic way to move air. They are not fantastic when it's time to clean the blades. I used a small screwdriver to break the clinging, packed dust, removed what remained with an old toothbrush, and vacuumed everything else. After I was finished, and reinstalled it, I checked the operation. I was amazed at how much more air was being moved. That, and how more quick the unit cycled.
I probably saved a few hundred bucks by doing it myself, but for those that can clean the blower themself, or have the money, I recommend doing so. It has to be more efficient, which translates into reduced costs, and lengthens the life of the system. The accumulated dust can cause the blower to become unbalanced and shorten the life of the bearing. Now is the time, before the heat is oppressive.
There's a sense of satisfaction when you understand the equipment you depend on.
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