What are HVAC filters?

HVAC filter is a filter that is used in the heating, ventilation and air conditioning system. The filter increases the efficiency and longevity of the HVAC system by protecting it from dust and air particles. It is therefore an integral but often overlooked part of the system. In addition to protecting the HVAC system from damage, some HVAC filters are designed to improve the quality of the internal air.

Whether it provides air conditioning or heating, the HVAC system draws air, heating or cooling the air, and then enforce air into areas requiring heating or cooling by a series of pipes. The inner air of the building is a mixture of particles of human skin, microscopic insects, pets, pets, pollen, substance particles and any other of a wide range of pollutants. As air circulates with the HVAC system, these interior pollutants are stretched by the system and can cause HVAC damage if the system remains unprotected.

HVAC filters work by providing physical barrier between air supply and movableand parts of the HVAC system. When the air is stretched, the particles are captured by the filter and prevented by entering while the air can pass. Some HVAC systems have a filter during air supply and also during the air exhaust, which further prevents any pollutants from blowing back into the internal environment.

The most economical HVAC filters are made of spinned glass fibers. Glass fiber filters are only able to filter only larger particles and should change at least once a month. HVAC disposable pleated filters are more expensive than glass fiber filters, but are also more efficient in removing air particles due to a larger surface surface formed folds. Pleated filters may not be replaced as often as the glass fiber filters do.

Electrostatic filters of more effective in capturing small and large particles than either one -off of the glass wolvesKen or pleated filters. When the air passes, a static charge is formed that attracts and holds smaller and larger particles. Electrostatic filters are usually repeatedly applicable and need to be washed regularly to remain efficient. They are also more expensive than one -off filters.

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HEPA filter (highly effective particle fever) captures at least 99.7% of all air particles and removes almost all allergens that can enter the HVAC system. HEPA filters are often used by those who have asthma and severe allergic problems because these filters actually improve the quality of the inner air. HEPA filters are one of the most effective and expensive filters on the market and are often reusable.