The thermostat may not be calibrated properly or has been set too lowSet your thermostat to the desirable temperature. If this does not change the heat output, contact your localTrane Comfort Specialist™.
The air and oil filters could be cloggedClean or replace the filters. You can use the owner’s manual to find where the air and oil filters are located.
The blower assembly is clogged with dirtIf you determine this to be the cause, you will need aTrane Comfort Specialist™to clean the assembly.
WHY IS MY OIL FURNACE SO NOISY?
A noisy furnace could be cause by a loose access panel or an unlubricated belt. If your furnace is making more noise than usual, take note of when it occurs and the sound it makes. Then, contact your localTrane Comfort Specialist™with the details.