| There are air filters that battle against indoor | | | | down to 0.3 microns in size. |
| allergens such as dust smoke, odor, gas and | | | | Gas molecules are extremely small and can pass |
| mould with filtration. The air filter's technology | | | | through a Hepa filter. An activated carbon or |
| cleans the air in the room with top efficiency and | | | | charcoal filter usually is added to trap gas |
| speed. Some are expensive, but are worth the | | | | molecules. Pleated media filters are more efficient |
| money if you need a high-end air filter. | | | | than the standard fiber filter, but not as effective |
| There are some filters available that | | | | as electrostatic filter. The media filter is more |
| decontaminate air up to 50% more than | | | | expensive than the common furnace filter, and |
| compared to other less expensive brands. They | | | | requires comparatively more energy. It needs to |
| offer excellent filtration efficiency and also filter | | | | be replaced regularly. It will work for a longer time |
| change indicators. Though many claim that they | | | | if a regular furnace filter is installed in front of the |
| have a long lasting filter life, many do not have | | | | pleated media filter. An electric or electrostatic |
| increased air delivery or lower noise levels. Some | | | | filter can be used to replace a standard furnace |
| have pre gas filters with excellent filtration -- 3 | | | | filter. An electrostatic filter when installed in the |
| filters and excellent carbon quality. The finer the | | | | return air duct near the furnace, removes fine |
| filter, the smaller the particles it traps. High | | | | particles from the air. The dust collecting plate will |
| efficiency particulate arresting filters are the best. | | | | have to be cleaned regularly. |
| They can capture 99 percent of all particles, | | | | |