Replacing vacuum switch on Furnace


Old 12-31-13, 08:19 AM
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Replacing vacuum switch on Furnace

My .47" WC vacuum switch is bad. I tested vacuum, which is more than adequate (probabbly more than 1" WC). I am struggling to find exact replacement online (Honeywell 49L9001 0.47" WC)

Would it be OK to use a 0.50" WC switch??
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Old 12-31-13, 05:58 PM
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If you are pulling 1" wc, you could easily go with the .50 switch.
Old 12-31-13, 07:33 PM
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FURNACE PARTS OUTLET has it. .47wc. $35.36.
If this is what your looking for.

It's actually a pressure switch.

EBay. Type in: .47"WC pressure switch. Brand new. $35.00. Free shipping.

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