[jsb5717]

Welcome aboard! Congrats on your purchase. Sounds like you need a new tech. Seems like quite a leap to a new furnace. If it does, in fact, have a dauber nest then clean it out. It's possible with the "tech's" recommendation that he doesn't have a clue what he's doing and replacing the furnace with a new one is the easiest way to make some money off of you. I'm suspicious if there really is a dauber nest. Sure, it's possible, but a pro...or even a semi-competent handy man, would clear it and diagnose from there.

When you set your thermostat for heat from the furnace, what happens...exactly. The blower kicks on, as you said. Is that it? Does it attempt to ignite? If it does you will be able to hear the clicking. Make sure that your fan is set to "Auto" to make sure you're listening to the furnace and not the AC fan.

There's plenty of experienced help here so if you can hang with us, answer questions as we go, and try some recommended approaches then we can likely get that furnace to run as it should.