My electric furnace blows cold air ~ 60 seconds before putting out barely warm air. Any ideas on how to fix this? Does it need a delay? How do I do that? Thanks in advance, Jay

If its all Electric and not a heat pump you may have a bad heat sequencer or bad heating coils. The blower times on first then each heating coil is timed on a few seconds apart. A broke circuit will keep certain heat strips from coming on.