One thing I found out from our local heating and a/c company is that getting your ductwork cleaned every 6 months is a truly wise thing to do, and when you do not get your ductwork cleaned every 6 months this can cause problems with the air quality in your home; Not to mention, it can also make your central heating and a/c system work overtime! And when your central heating and a/c system works overtime this can cause to heat and cooling system split downs.
And of course, I do not have to say that heat and cooling system split downs means spending money on Heating, Ventilation, and A/C repair, but occasionally it can even lead to having to buy a brand current and up-to-date central heating and a/c system all together, and this is something you for sure do not want to happen before your central heating and a/c system has run its course.
Usually that is at least 10 years, occasionally even 15 years, and so always get the ductwork of your central heating and a/c system cleaned every 6 months and you will be a lot better off all around with your indoor comfort, your indoor air pollen levels and extending the life span of your central heating and cooling component without question, then ductwork cleaning is a truly crucial area of heating and cooling maintenance! Do not let it slip by you! I have our ductwork cleaned every 6 months ever since I found out about this from our friendly and local heating and a/c worker.