Homeowners mostly have a common question on how the ducts and furnaces get dirty. Before answering this question, understanding how the cooling and heating system works will make it easier for you to understand how dirt find its way to the ducts and furnaces in your house.
How the system works
You may put all the effort in keep you house dust free but your daily activities will leave your home with dust particles anyway. Some will be on the table, others on the sofa, but most of it will be suspended on the air. The air is pulled through the return ductwork, it then goes through the filter and even though at this stage contaminants are filtered from the air, some dust particles still finds their way through and with time accumulates.
From the filter air moves and reaches the furnaces. At this point, it’s either heated or cooled, depending on the command from your switch. It is then blown out through the supply ductworks then blown back to your house. This air can be re-circulated a minimum of 5 times a day. Now imagine how much dirt can accumulate in a span of three years.
Components that get dirty
- Return air duct- which receives the air
- Filters
- Blower
- Cooling coils
- Supply ducts
How the duct and furnaces get dirty
There are dust particles everywhere in the air even though you can’t see them with your bare eyes. No matter how clean your home is, the dust will always find its way into your house. Having this in mind, now you can understand that when the air is pulled from your house into the return ductwork of the system, some dust is pulled along with it this includes any contaminants that may be in the air like tobacco fumes. This is generally how the ducts and furnaces get dirty.
It’s important to get your HVAC system cleaned once in a while to ensure your homestead environment is clean. Additionally, it is proved beyond doubt the cleaned HVAC systems save more on energy bills.
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