Coleman model DGATO7OBDE furnace everything works but does not get hot like it should. No codes good burner but can touch chamber while running and only gets to 66 degrees in trailer

Hi jb and welcome, How long does the burner stay on? Do you have good air movements from the vents?

Stays on, nice blue flame. Good air from vents just never gets really hot

How many burners? Just one?

Yes it's a mobile home... Works perfect just not hot enough

Just won't get hot in Mobile

Make sure the fan is running on medium or low. If this is a heat only furnace it might have a single speed fan.