Panasonic Bathroom Fan Information - Why Ventilation is Necessary

    


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Panasonic Bathroom Fan Information

Why Ventilation is Necessary...

Ventilation is necessary for a few reasons, including:

Airtight Homes
Homes designed and built in recent years are more airtight and energy efficient than in the past. To obtain this airtight design, house wraps, newly designed windows and doors, sealing caulks and other insulating materials are used to create a seal for optimum energy efficiency. The resulting benefit is fewer drafts, which lowers the cost to heat and air-condition a home. But pollutants retained in airtight buildings can be hazardous to their occupants and can jeopardize structural integrity. That's why Panasonic stresses a "build tight and ventilate right" platform. Proper mechanical ventilation design can address poor indoor air quality, while retaining energy efficiency.


Biological Pollutants
Biological pollutants, to some degree, are found in all homes. These includes mold, mildew, pollen, dust mites, pet dander, viruses and bacteria. Accumulation of these "biological pollutants" can result in hazardous health effects for the occupants, as well as structural damage to the building.

Most biological pollutants tend to flourish in a humid, moist environment. Some examples of moisture sources inside the home include tubs and showers, whirlpool baths, cooking, washing machines, dishwashers, fish tanks, plumbing leaks, defective gutters, inadequately waterproofed basements or crawl spaces, and even human breathing.

Moisture from these sources can accumulate in wall cavities, cracks and crevices, which can lead to the growth of various forms of mold and mildew. Proper ventilation is used to combat this accumulation.

A continued build-up can adversely affect anyone with asthma or allergies. Furthermore, it can also lead to the deterioration and destruction of structural supports and walls from the inside out.


Volatile Organic Compounds (VOCs)
Volatile Organic Compounds are carbon-based compounds that easily evaporate. These types of gases are released from building materials, carpets, furniture and many other solid household items as part of aging, decomposition or curing, all of which are natural processes known as "outgassing". Some other household items that emit "VOCs" include hair sprays, paints, lacquers, finishes, oven cleaners and other cleaning solvents, pesticides, etc. Often colorless and odorless, VOCs can ultimately sensitize certain people to react to them.

Pesticides are designed to kill pests and not humans or pets. But that does not mean that prolonged exposure to pesticides isn't harmful. In fact, prolonged exposure to concentrated amounts of pesticides has been shown in some instances to cause immune-system damage, headaches, dizziness, nausea, muscle spasms and multiple chemical sensitivity (MCS). So, it's important to limit prolonged exposure to these types of materials. Metals such as lead, mercury, cadmium and arsenic are commonly found in older paints, made prior to 1980, new exterior paints and chemically treated lumber. Minerals that accumulate in the home include asbestos and calcium. Asbestos is often found in older homes. Calcium can collect in humidifiers, which can then become an air-borne pollutant and can be inhaled.

Radon is a radioactive gas that is released from the natural decay of the mineral radium, which is usually found in small amounts in the soil. Radon is only a problem if it seeps into the home and accumulates. Prolonged exposure of high amounts of radon has been shown to contribute to lung cancer.

Smoking contaminates the air with nicotine, tars, acetaldehyde, nitrogen dioxide and carbon monoxide. These chemicals can accumulate in the home, not only affecting smokers but non-smokers as well.


Ways to improve indoor air quality
To improve indoor air quality, reduce or remove the source of the pollutants. For example, paints, solvents or other chemicals should not be stored in the home but rather in a garage or shed. If the garage is attached to the home, make sure there is an airtight seal between the garage and living quarters. This will prevent pollutants from entering the house. Another safeguard is to use building materials and cleaning products with a low level of toxicity.

Unfortunately, indoor pollutants are virtually impossible to eliminate completely, creating the need for a second step to improve indoor air quality-mechanical ventilation. Mechanical ventilation is used to remove stale, moist, polluted air and replace it with fresh outside air. Two widely used methods in today's building industry are continuous and intermittent ventilation.

Most industry experts agree that we should not rely on natural pressures and passive ventilation through vents, leaks or holes in the building envelope. Such ventilation relies heavily on wind and weather conditions and is neither consistent nor reliable.


Continuous and Intermittent Ventilation
A smooth surface duct allows for optimum airflow. For best results, use galvanized sheet metal or possibly PVC. Flexible aluminum duct is durable, easy to install and often used. However, the ridges in aluminum flexible duct increase static pressure and can reduce air flow and fan performance. This results in lower CFMs, higher noise levels and greater energy consumption. The degree to which performance is affected depends on the length of duct, number and degree of elbows.

Sagging or weaving a fan duct will also increase static pressure and reduce a fans performance. When using a flexible aluminum duct, support the entire length of the duct with braces or hangers to keep it as straight as possible for the entire run. If the duct lies across the attic, do not allow it to sag between each joist. Also, avoid weaving serpentine through trusses.

Using dryer duct connectors made of nylon or vinyl is not recommended due to high static pressure caused by its ridges and curvature. Insulated flexible duct must be fully extended to avoid added resistance.



Detailed Product Information
  • Products Regular Price: $0
  • Model: Why Ventilation
  • Manufactured by: Panasonic Fan Info
  • Condition: New
  • Payments Accepted: AMEX, Visa, MasterCard, Discover and PayPal
  • Shipping Available to: United States
  • Available at: Wave Plumbing