My gas oil furnace is a lot of work, and first, I have to be on it with heating repair every fall! A oil furnace separate from official cleaning is no good… Not only are your utility bills high because the component is trying to work through dust, but the indoor air pollen levels is polluted! Polluted indoor air conditions cause sneezing, coughing and flu like symptoms. Another issue with our gas furnace is that when it is dusty, it is more at risk of system failure, but the main line of defense against dust is the oil furnace filter! Every month I need to substitute it with new; If I don’t do that, our heating system could overheat and just quit on me, but most likely a huge furnace service will then follow this. That is the ideal situation in that case. The oil furnace could also overheat and catch on fire. Even worse is the heat exchanger could have a small crack in it not noticeable to the naked eye… Small amounts of carbon monoxide then get released into the air. This gas is smellless, tasteless and colorless. It does slowly poison you to sickness and even could prove fatal in some cases, then you can’t simply patch up the heat exchanger for little cash too. It costs almost as much as an entire oil furnace to get repaired, however basically it would be better to start from scratch and get a new heating system! With all those cons the furnace should work legitimately well, then however, our oil furnace isn’t the most efficient, heated air rises and there are freezing spots all throughout the house.