Evaluating Air Duct Cleaning Systems

According to the Environmental Protection Agency, indoor air pollution is one of the five most urgent environmental risks to public health. Buildings with closed ventilation systems simply have no effective means of filtering out pollutants, so many people today are suffering from an increase in allergies related to dust and polluted air. As more people become aware of these issues, the need for indoor air cleaning systems will continue to rise.

There are a number of companies that manufacture air duct cleaning systems, which are in highest demand in cities with higher average temperatures, where air conditioning is a constant. Naturally, a number of different duct cleaning technologies have evolved, each with its own unique qualities. These are the three most common:

The brush-and-vacuum method

This method employs a round, soft-bristled brush that rotates at the end of a high-powered vacuum hose as it is pushed through the duct system. Service providers who use this method should be using HEPA filters to prevent dust and debris from being released into the home. According to research by ABA Consulting, homeowners prefer this method nearly 3 to 1 over the other options.

The negative air method

This method involves cutting a hole in the duct, blocking off various sections of the duct, and attaching an extremely powerful vacuum over the hole (generally up to 3000 cfm) to suck out dust and debris. To get the hard to reach and cakes-on material in the ductwork, a rubber or plastic whip rotates rapidly to dislodge debris. This method is often used in industrial situations where the ducts are too large for brushes.

The whip method

In this method, a rubber or plastic whip rotates rapidly to dislodge debris, which is then removed by a powerful vacuum in the company's truck outside. This method is generally used on ductboard and sheet metal but not on flexible duct.

Whichever method you choose, be sure you're getting a durable, powerful machine with quality materials, a good warranty, and easy access to replacement parts. Check too on the manufacturer's reputation for reliability.

Today's homeowners understand that when it comes to indoor air quality, the ball is in their court. Air duct cleaning might not be necessary in every home, but homeowners who need it will find it a quick and easy way to breathe a little easier.

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