It is best for your house's system, as well as your health, to have your ductwork cleaned at least once every two years.
There is no recommended time specifically that is required to have ducts cleaned. Most of the time ductwork is a very minor source of pollutants in the home. Opening the front door lets in more pollutants than ductwork produces. Duct work should be inspected every several years to make sure there is no mold or critters in there.
Draperies should generally be cleaned one or two times a year.
every day
It has to be cleaned every so often, mainly if you can see that it is dirty than you should clean it. And it really should be cleaned every 4-5 weeks.
One of the best benefits of ductless airconditioning is the lack of ductwork running through your house. Another benefit is that due to the ductwork not needing to be cleaned, allergy sufferers will reap benefits!
about every 2 weeks
== == every day howrse.com answer: Daily
Common signs that indicate the need for AC ductwork repair include reduced airflow, uneven cooling or heating in different rooms, strange odors coming from the vents, increased energy bills, and visible signs of damage or leaks in the ductwork.
They usually do not need to be cleaned unless you are using a cylinder for nitrox.
"Air Ducts need to be cleaned at least once a year. Some people clean them twice a year to be safe, or at the beginning of every season if you're really on top of things."
To add a return vent to existing ductwork, you will need to locate a suitable area on the ductwork where the vent can be installed. Cut a hole in the ductwork, install the vent, and seal it properly to ensure efficient airflow. It is recommended to consult a professional HVAC technician for proper installation and to ensure the system functions correctly.
Your ring only needs to be cleaned every couple of years.
THe viewsonic screen should be cleaned as needed,this time will vary on conditions.