I was wanting to find out more information about my central heating and air conditioning system as well as everything that goes with it. So I finally decided to speak with my local heating and air conditioning specialist the last time I had them here doing a heating and air conditioning system tune up and check up. I learned something completely new about the operation of my central heating and air conditioning system that I am glad that I did. And that was that the ductwork should be cleaned at least twice a year. I did not know this! I had not had my ductwork cleaned in ages. After finding this out I right away scheduled an HVAC appointment for the heating and air conditioning company to come out and do a ductwork complete clean of my central heating and air conditioning system. And I will ensure that I get the ductwork to my central heating and air conditioning system cleaned every six months or so moving forward with things. No wonder I had been noticing slight air flow problems! My nice friendly and helpful local heating and air conditioning specialist confirmed everything. This is why it is good to have a nice talk with your local heating and air conditioning worker while they are doing work on your central heating and air conditioning system. You could learn just enough to possibly extend the life of your very own heating and air conditioning system by several years if you just take a few minutes and talk to them.