My Heating, Ventilation, plus A/C system has lasted me a long time because I take real wonderful care of it, and everything you learn online that they say to do, I do it. Every Spring I get our cooling system tuned up. I have the Heating, Ventilation, plus A/C supplier check the coils, lubricate the motor belt plus dust the fan blades. I also do our own A/C cleaning throughout the summer time to keep it fresh plus toiling well. I only run the A/C at night since I am outside during the day. I baby it so it will keep on running. In the fall I then call for heating service. I have the blower oiled, the heat exchanger checked plus the dust wiped out of our system. During the year I change our oil furnace filter correctly plus I regularly am listening for noise. The gas furnace is used sparingly. I don’t set our control component to unrealistic temperatures plus make it work all day. I set the control component as low as I can sit it plus try to let our furnace take breaks. Anytime a Heating, Ventilation, plus A/C supplier recommends a part being replaced, I replace it. I do what I can to ensure the Heating, Ventilation, plus A/C keeps on running. It was a super pricey system to buy plus have installed in our home. Maintaining a Heating, Ventilation, plus A/C component is like cleaning your teeth, going to the dentist or toiling out. Everything in life needs a little service in order to work well. My Heating, Ventilation, plus A/C system is hopefully going to last another 5 years because of how wonderful I treat it.