One thing I learned recently about my central heating and air conditioning system is that getting it tuned up and checked up regularly is a way to extend its life. The other thing I found out was if the central heating and air conditioning system is washed at least once a month it also helps its lifespan. Washing your central heating and air conditioning system with a water hose is not something you may think would have an impact on the life of an HVAC unit. However, by washing your central heating and air conditioning system unit it keeps all kinds of dirt and stuff from getting inside the inner workings of the heating and cooling system, which could damage the fan or the motor. By washing this potential dirt and stuff away with the water hose, it ensures that your central heating and air conditioning system would not have this kind of problem turning up. This is to be done in addition to regular heat and a/c tune up and check ups. Ask your local heating and air conditioning specialist about the best ways to go about washing your central heating and cooling unit. You can wash it yourself or you can have the heat and a/c company do it as part of the heating and air conditioning tune up and check up. That will cost you a little more, but if you do not feel like going outside in the freezing cold or super hot heat to wash your HVAC unit, this could be a good alternative.