Posted by Todd Ellebruch on Thu, Jan 22, 2009 @ 07:44 AM
As one of the most important systems in the home or office building, the heating, ventilation, and air conditioning (HVAC) system is also the central point for the collection of a variety of contaminants, which can affect the occupant's health. One important aspect considered in improving indoor air quality, is the removal of pollutants such as mold, fungi, hair, pollen, and bacteria.
While there is no set timeframe on when to have air ducts cleaned, several factors must be taken into consideration not the least of which is the preference of the homeowner or building superintendent. Some of the more frequent factors include:
- Smokers in the home or building.
- Pets/animals, which shed high amounts of hair and dander.
- Water contamination, or damage to the home/building or ventilation system.
- Occupants with allergies or asthma who might benefit from a reduction in the amount of indoor air pollutants in the HVAC system.
- After home/building renovations or remolding.
- Prior to occupancy of a new home or building.
Depending on the size of the home or building, the number of systems, the extent of the contamination, and how many persons are conducting the cleaning determines the amount of time it will take to clean the HVAC system. The most beneficial way to ensure the cleaning was effective is through a visual inspection. If any dust or debris can be seen, then the system should not be considered cleaned.
Posted by Todd Ellebruch on Mon, Jan 05, 2009 @ 03:03 PM
Normally people associate mold and mildew with humidity and warmer climates. This is because mold requires moisture to grow, and in those optimal conditions, it is very easy to see. However, during the winter months and in cooler climates mold and mildew growth remains, albeit slow.
The contained climate of a HVAC system is independent of the outdoor's or building's environment. Different conditions vary inside the system, which can introduce heat, humidity, and create rapid air movement changing on an hourly basis. These conditions within the air handler and ducts provide an opportunity for microbial growth. Only when there is a buildup in levels of contamination is the problem noticed.
With proper maintenance, those conditions will not lead to excessive growth. In order to provide a better and healthier indoor air quality, incorporate mold and mildew removal and the prevention of growth into your maintenance package. This should be year round, because HVAC systems have their winters and summers independent of those outside their world.