Cold air return


Old 10-30-03, 04:30 PM
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Cold air return

Do you have to have a cold air return on a forced hot air oil furnace.
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Old 10-30-03, 04:32 PM
hvac4u's Avatar
Join Date: Aug 2001
Location: NW atlanta
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YES, where does the air come from that leaves the supply? take a box fan, blank off intake....nothing comes out!

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