Is sooting an inherent problem w/all LP air-forced central furnaces?
Our tech put new aperture (thing that directs gas into the furnace) and said your sooting problems should be gone.
Noticed the flames weren't as blue as they should be so got the old hair dryer out and turned everything off and blew out a bunch of soot from the burners.
This was a normal problem for years on running until this fall's checkup.
Circa 1993 Lennox 10.4 SEER.
BTW, we have 2 CO detectors in the house just for added insurance.
So back to OP, do all LP (adapted from NG) soot or is this a problem w/our's
Thanks for the responses