Using HEPA filters can trap these contaminants and can help alleviate allergies. HEPA stands for high-efficiency particulate air. A hepa filter is a type of mechanical air filter; it works by forcing air through a fine mesh that traps harmful particles such as pollen, pet dander, dust mites, and tobacco smoke. Air purifiers help with allergies by grabbing allergen particles when they are floating and trapping them.
Once caught, they don't have a chance to float again. This is important because only floating particles are inhaled. The seated do not cause problems until they float and are inhaled. A professional HVAC company must install a whole-house HEPA filter and be the right size for its air handling unit, to protect the life of the equipment and ensure that air passes through and not around the HEPA filter.
If you're looking for an air purifier for dog or cat allergies, you really need an air purifier for pet dander. For example, HEPA filters can clean smaller particles, such as tobacco smoke, and medium and large particles, such as dust and pollen, from the air and can have a high CADR. In the case of pet dander, particles that cause pet allergies can be removed by using an air purifier equipped with a HEPA filter. While it can be nice to cuddle with pets or open a window to let in some fresh air, it can also cause a lot of dust, dander or impurities to enter the air or cause them to come out into the air.
The disadvantages of air purifiers include noise, energy consumption, and the cost of replacing filters. Air purifiers are busy sucking in air, quickly passing it through the light, and then sending it back to the room. In addition to mitigating the effects of allergies, air filters can eliminate odors from the air and help you sleep better. Some filters are reusable and washable, but require meticulous maintenance, so they are not usually found in the most effective air purifiers.
While you can't control the quality of outdoor air, you can make sure that you and your family breathe clean air into your home. For best results, make sure that the air purifier you have is in the room you spend the most time in, that it has a suitable HEPA filter installed, and that it is running all day. Some whole-house air filtration units bring fresh air from the outside to the inside and filter it before distributing it to the rest of the house. In fact, air purifiers can neutralize some of the threat posed by air pollution and indoor activities.
Because pollen particles have a much larger average size, air purifiers that use HEPA filters are often very effective in reducing indoor pollen levels. To determine the air exchanges, take the volume of air in the room and divide it by the cfm of the machine. Typically, the best air purifiers for allergies will use a combination of the best technologies to trap, reduce, and destroy airborne allergens.