Hello:
Wondering How Too Connect Two Ceiling Fans To My Hot Air Furnace, So When The Furnace Blower Comes On, The Ceiling Fans Would Also Come On Automatically... the Building Is Block, 30 Feet By 40 Feet With a 14 Foot High Insulated Ceiling, Used Only As A Storage Building & Usually No One Is There, But What Has Been Noticed When The Two Fans Are Turned On Manually, The Warm Air Forced Downward Really Makes A Big Difference In Heating The Area... If There Is A Certain Control Or Relay To Accomplish This Idea, I Would Be Very Appreciative Of An Answer Or Also Any Other Ideas Would Be Welcomed, Concerning Ceiling Fans Turning On, When The Hot Air Furnace Blower Comes On...

Regards
Bigmidget

A HVAC person or an electricial can do that for you. It calls for taping into the blower control circuit of the furnace and adding a relay.