Upon arrival found office furnace flashing code “pressure switch open”. Inducer motor was hot to touch and not spinning checked amps 1.4. Removed inducer motor to check if anything had gotten into it, inducer and flue are both clear. Motor isn’t locked up but there is a lot of resistance when spinning the blades. Reattached inducer motor, inducer motor started operating however it didn’t sound normal and motor was starting to overheat. Inducer motor is failing. Photos and videos attached. Scoped heat exchanger and found that heat exchanger is compromised on right cell. Flames are fluffing and starting to roll out due to air getting into the exchangers via crack. Compromised heat exchangers have an increased chance of getting carbon monoxide into the air or having rollouts (when flames become unstable and “roll out” the furnace chamber) office furnace is beginning to roll out. Photos and videos attached. Need to replace heat exchangers and inducer motor or upgrade furnace for proper op