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inline fan for oval duct

My house was built in 1900 and has forced hot air heat with oval ductwork. I added central air to thr furnace in the basement. I have been looking for an inline fan to fit the oval duct since the cold air does not reach the second floor well. The basement and first floors are cold, but the second floor is not. Suggesions?

Re: inline fan for oval duct

You need a connector from round duct to oval duct, or from square/rectangular to oval. Go to a/c suppliers, they most likely have it.

If not, go to sheet metal shops to have a custom connector made.

Re: inline fan for oval duct

Sorry, I left my previous answer incomplete...

An inline fan will fit the round/rectangular/square opening of the connector to oval.

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