What is the difference between G2 and G3 filter?
G3 relates to the amount of dust retained in the filter and G2 and G3 are the commonly used filter types uses in Aussie air con systems (if you go to a G4 or higher grade of filter this can place additional stress on the fan motor, which isn’t a good thing).
What is filter class G3?
Filter class G3 Filters for coarse dusts such as sawdust, gross domestic dust, sand. Also used as a pre-filter.
What is G4 filter grade?
A coarse G4 filter is designed to capture pollen, fog and coarse dust particles (≥10μm). It also captures leaves, insects, textile fibres, sand, ash, mist and hair. (Note: 10µm is 0.01mm.) Medium filters were classified according to the average efficiency (Em) of 0.4μm particles.
What is the Merv scale?
MERV stands for Minimum Efficiency Reporting Value. MERV ratings are on a scale of one to 20 depending on the minimum size of the particles a filter can be expected to capture: A filter with a MERV rating of one to four captures particles greater than 10 micrometers.
What is a HEPA rating?
HEPA is a type of pleated mechanical air filter. It is an acronym for “high efficiency particulate air [filter]” (as officially defined by the U.S. Dept. of Energy). Using the worst case particle size results in the worst case efficiency rating (i.e. 99.97% or better for all particle sizes).
What is the MERV rating of filters?
An air filter’s minimum efficiency reporting value (MERV) rating measures how effectively the filter stops dust and other contaminants from passing through the filter and into the air stream. Filters with higher MERV ratings trap small particles more effectively than filters with lower MERV ratings.
Does changing air filter improve air conditioning?
Improved HVAC System Efficiency. Last but certainly not least, regularly changing your air filters helps your HVAC system perform more efficiently! Changing your air filter regularly can help your system last longer and need less maintenance.
What is filter class G2?
Filter (usually lattice-like) for coarse impurities such as leaves, birds, large insects. Filter class G2 Filter dust concentrations without gross requirements for air purity and hygiene as textile fiber, fly ash, hairs. Supply air for cooling of large machinery and switchgear, compressors.
What is a G3 filter used for?
Filter class G3 Filters for coarse dusts such as sawdust, gross domestic dust, sand. Also used as a pre-filter. Filter class G4
What are the different filter classes and particle sizes?
Categorization of filter classes and particle sizes 1 pre-filters and circulation filters for civil defense shelters 2 exhaust filters for spray painting booths, kitchens, etc. 3 inlet air filters for air conditioners and compact machines (e.g. window air conditioners, ventilators) 4 pre-filters for Filter Classes M6 to F8
What is a G4 filter used for?
Filter class G4. Filters for air conditioning and ventilation systems for coarse dust as found in indoor plumbing and ventilation systems. Prefilter in channel filters for the separation of large dust.