I have been installing ducane furnaces since they came in our area youngstown ohio for 15 years and I love them. every bad comment about the gas furnace sounds like the customer never changes the filter,sized too big,blocked returns due to boxes and furniture blocking it,maintainance not done every year or not properly installed.in this day and age of electronics any furnace can have its problems.if a circut board is repeatly going out you have a feed back condition on the neutral line. we had a problem with a board that kept going out and traced it to a bad dehumidifier in the basement a motor winding was feeding back,also a bad flourescent light balllast could also do the same,one time a customer was a avid woodworker and we traced the feedback to a radial saw motor.anything with a motor can cause a feedback if it has a weak winding, like a washing machine, dryer you get the idea.when a inducer motor goes out a cause could be not enough pipe pitch back to the furnace or a blocked drain,pipe run too long or wrong size,sags in the pipe should b suppoted every 4 feet.just to let you know when you register your furnace on line you get a 10 year parts warranty.labor is still charged but we have about a 2% service issues with ducanes and there parts.about there parts they use honeywell witch is very easy to get parts for our supplier gets. special parts the ones that normally are not stocked in 1-2 days.we insall 75-100 ducanes a year. yes ducane had issues with a certain type of oil furnace that had design flaws but that furnace has been discontinued about 10 years ago.when ducane came out in the 50’s they made oil furnaces for almost every manufactor with other brand names.their oil furnaces today are very reliable as long as they are set up with a combustion analyzer to set draft, co, o2,temp rise,etc.in closing any ducane is good as the person installing it and maintaining it every year,not just when it doesn’t work.change your filter at least 2 times a year.