I guess that my gas furnace is reaching the end of its lifespan.  The heating method is nearly twenty years aged and starting to show its age.  Although I’ve kept up with annual, professional maintenance, the furnace is simply wearing out.  Every winter, I’m faced with multiple small repairs and the cost suddenly adds up. The furnace no longer puts out as much heated air, and every winter, it’s necessary to raise the temperature control setting by multiple degrees.  This causes the heating component to run nearly non stop, eating up a tremendous amount of energy and costing more and more to operate. The method only achieved an 89% AFUE rating when it was brand new, and it’s unquestionably lost efficiency over the years.  It is only a single stage model, which means that the oil furnace either runs at maximum capacity or completely shuts off. Because it blasts heat until reaching the temperature control setting then quits, it creates unquestionably unpleasant temperature swings.  This type of operation also causes complications with overly dry air in the house. I’ve observed that there’s a lot more dust floating around in the air and settling on surfaces. I’m forced to dust, mop and vacuum far more frequently, and I blame the furnace. I worry about air quality and safety risks.  I’ve started researching brands and models of furnaces available on the market, and I’m shocked by how extravagant these systems are. However, newer models now achieve a 98% AFUE rating and offer adaptable speed technology, then these gas furnaces are able to adapt capacity anywhere between forty and 1 hundred percent and automatically adjust to provide only the necessary amount of heating.  This allows the furnace to run at lower speeds for longer cycles, maximizing energy efficiency while maintaining a more even indoor temperature. Modern furnaces also include advanced air filtration and safety features.