Marshalltown Air Duct Cleaning
“You Don’t Pay Unless You’re 100% Satisfied”
641-321-6112
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The Marshalltown Air Duct Cleaning Process Explained
When the Marshalltown Air Duct Cleaning company cleans an air duct system, they follow a systematic process to ensure that the job gets done right. The techs have used this process over and over again and they have it down to a science. The amazing thing is the techs know the process so well they wouldn’t even need to speak to each other for the entire job.
The Air Duct System Explained
To better understand the cleaning process, we must first understand the air duct system. Basically, you have a “supply” side and a “return” side. The “supply” side forces the air out the vents into the rooms. The “return” side consists of the vents and lines that return the air to the furnace.
You have a motor that sits at the bottom of the furnace unit. It is a squirrel-caged fan that pulls air from the return vents while at the same time blowing the air up through the furnace burners and then through the “A Coil” if there is an air conditioner. The air then goes down the supply trunk line and then through the individual vent lines running to the rooms of the house.
Every bedroom needs to have a return vent line. The reason is because if the door is closed and the supply vent line is pushing in the room, the air has to have a way to leave the room. If the door is closed, the air can’t get out of the room and it becomes pressurized. When this happens the air flow into the room becomes minimal.
Usually, you will find larger return vents in the bigger rooms of the house like the living room and family room. Sometimes return vents are in hallways.
Now that we understand how the air flow works, let’s look at the “A-Coil.” The “A-Coil” sits on top of the furnace and is basically a radiator, like in a car. The compressor for the air conditioner sits outside and circulates freon to the “A-Coil” and then back to the compressor. The freon gets really cold while flowing and when the air blows through the coil it gets cooled. Thus, an air conditioner.
In the winter when the furnace is running the air blows through the burner chambers and gets heated.
The Filter
The filter separates the cold air return side from the supply side. The filter is located right before the blower. This way it can filter the air before it goes into the blower and through the furnace and “A-Coil.” Without a filter, you would contaminate the blower and the “A-Coil. If you allow too much debris through, it can totally block off the flow of air through the “A-Coil.”
It is important to use a good filter. Don’t use the cheap ones you can see through. If you can see through it then dust can go through it. You don’t need the pricy electronic filters either. While they work really well, they can impede air flow if they get dirty. They work so well they need cleaned out once per month. We recommend using the pleated filters. They are the “middle-of-the-line” filters that look like window shades.
Our Process
The first thing we do is hook up a negative air machine to the cold air return side of the system right before the filter. We completely cover the filter with tape so not to draw air from the supply side while we are cleaning the return side. We will also put blue tape over each of the cold air return vent covers. We work on one cold air line at a time and we want maximum pull from the negative air machine. By closing off all other vents, we get maximum pull.
We clean each return line and then move to the return trunk lines. We use compressed air and whips and push everything down to the negative air machine. Once we get the return side clean, we move to the supply side.
Then we thoroughly clean the blower motor compartment. We clean the blower motor and the area around it. Typically, the blower compartment area is dirty over time. Not cleaning it would be like changing the oil in your car but not changing the filter.
We will cover the “A-Coil” with a blanket and hook up the negative air machine just above it. We then go to each supply vent and use the compressed air and whips to push the debris to the supply trunk line. Once we have all the supplies cleaned, we move to the basement to clean the supply trunk lines.
Once we get the trunk lines cleaned, we remove the blanket covering the “A-Coil” and then we clean the “A-Coil.” Some companies claim to clean the bottom side of the “A-Coil” but I find that difficult to believe. You would have to take the “A-Coil” off of the furnace unit in order to do that. Unless you are an HVAC company, you are not qualified to do this.
Once we have the “A-Coil” area cleaned, we put sheet metal over the openings created for the negative air machine and then we put steel tape over the edges to seal it. For the one-inch openings we created in the trunk lines for cleaning, we use plastic plugs to seal them.
The nice thing about Marshalltown Air Duct Cleaning is we take before and after pictures of our work and we show you everything. We prove to you that we did the work you paid us to do. In fact, we encourage you to follow us around while we clean and ask questions. We will explain the entire process and show you everything.
Our goal is to make sure you like our work so much that you tell your family and friends. We are so convinced you will like our work we offer a guarantee that nobody else does…”You don’t pay unless you’re 100% satisfied.”