When my partner & I first purchased our home, both of us made sure to have the heating & cooling system checked by a local Heating & A/C corporation. He told us everything was in good condition & advised annual service services. We enrolled in a program that included a fall repair for the oil furnace & upkeep for the air conditioning in the Springtime. We assumed that this would keep the entirety of the Heating & A/C system running regularly. We never gave the duct system a thought. My partner & I counted on the Heating & A/C corporation to handle all of the necessary inspections & cleaning. Unfortunately, the specialist totally ignored the ductwork. Over the years a whole bunch of contaminants built up inside, preventing the heated & cooled room from reaching its intended endpoint. This caused rooms that were either overheated or cold, no matter how both of us adjusted the thermostat. Plus, the oil furnace & air conditioning were required to run longer, job harder & use more energy. Our utility bills gradually climbed higher & higher. When both of us noticed that our air quality had also diminished due to a steady influx of dust, both of us finally had the ductwork professionally cleaned. We chose a different Heating & A/C company, 1 that specialized in duct services. The specialist found dead mice in our ductwork, along with dust, bugs, webs, & mold growth. Every time the oil furnace or air conditioning operated, it was sending harmful spores, bacteria & particulate into the air my partner & I breathe. Our health was put at risk, & I blame the Heating & A/C provider who was paid to handle our annual service.