You may not believe me, but I have never had a serious heating and air conditioning system break down in my entire life to date! At least my own life. I do not count growing up while living with my parents. As an adult and owning my own central heating and air conditioning system I have never had any major breakdowns! There was only one time where the fan of my central heating and air conditioning system was on its way out, but I caught it in time and got a new one put in right away. The reason for this never having any heat and a/c breakdowns in because I always am up to date on all my HVAC maintenance. I always get my central heating and air conditioning system tuned up and checked up regularly, I get my ductwork cleaned every 6 months and most of all, I always change the air filter on time within my central heat and a/c unit. By doing these things you too can have little to no heating and air conditioning system breakdowns in your life. Not only is that less of a headache for you, but it will also save you hundreds of dollars in the long run from not having to pay for tons of HVAC labor on repairs and HVAC home services visits from your local heating and cooling company. If you just keep up with your central heating and air conditioning system you will find that having a central HVAC unit is easier than you could ever imagine!