Respirators are devices to protect individuals from inhaling dangerous substances, such as chemicals and infectious particles. There are several different types of respirators, including escape (used only in an emergency), particulate (only protect against particles), chemical cartridge/gas mask (clean chemical gases and possibly particles), honeycomb charcoal, powered air-purifying respirator (use a fan to blow air through a filter to the user), and self-contained breathing apparatus (use their own air tank).
Indoor air cleaning systems may help to reduce levels of allergens and pollutants in indoor air to create a cleaner, healthier work and home environment. There are a number of different types of air cleaners and filtration systems; HEPA, ULPA, carbon filter, electrostatic, electret, negative-ionizing, UV, and ozone generators. It's important to know the air cleaning needs for the situation when selecting an appropriate system. A word of caution is needed when choosing an air purifier. These are less effective in large areas and need to be designed for specific irritants. For example, certain air purifiers will not work for fragrances but will work for smoke. It's important to work with a vendor to make certain of what can be effective for the situation.
Powered Air Purifying Respirators (PAPR) or supplied air respirators are systems that can offer protection against inhaling chemicals or dangerous substances. These devices either use a fan to blow air through a filter to the user or use their own air tank. Some systems offer a full-face mask option while others are hooded.