Pulley on HVAC

I Hear Squeaking!

Does my Heating or A/C need oiling? I Hear Squeaking!

In a word – no! Many heating or cooling (HVAC) units use belts and pulleys to move the air around the building. There is a belt that goes between the pulleys on the electric motor and the blower wheel. When this belt is adjusted correctly the system will work for a long time with no problems. However, if this belt is loose, the pulleys and belt will wear much faster than they should. If the belt is too tight there is too much tension causing excessive wear on the bearings in the motor and blower. Both scenarios will produce a squeaking noise.

Newer equipment now uses variable speed motors which ramp up slowly and adjust speed depending on demand in the system. This is easier on the equipment and saves power.

Caledonia Integrated Services is an Energy Management, HVAC and  Electrical company, serving Vancouver and BC area.
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One Response to “Tip of the Month – January 2011”

  1.  Trevor Says:

    Great article!

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