When changing furnace filters many people wonder where the arrow of the filter should point towards.
Air flow filter.
All include at least one layer of merv 13 filtration material rated to remove particles as small as 0 3 microns this material is used in our higher efficiency hvac filters that are effective in providing superior home air filtration.
Pureflow filters are designed to balance maximum efficiency and minimum drop in pressure in the air ventilation system.
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It s a strangely surprising task changing your home air filters.
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Which direction does the arrow on an air filter go.
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The arrow should always point in the direction the air is.
A merv 11 filter is appropriate for homes with pets or people with allergies because it picks up most allergens including pet dander.
Merv filter ratings and air quality.
Filters up to 99 of airborne contaminants.
Here at airflow filters we manufacture and sell a range of custom heating ventilation and air conditioning hvac filters for commercial industrial marine and household applications ranging from 1 2 inch to 5 inch thickness.
Turn off you hvac system while you are changing your air filter.
It means the arrow faces the unit or in other words facing inside the space you re putting it into.
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Different systems put the filter in different places but most commonly it is located in the air return duct.
To determine air flow direction hold a thin strip of paper in front of the duct while it is.
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If you inspect your new air filter you may see an arrow that says air flow.
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The smaller pores in more highly rated air filters create resistance to air flow and if the filter is used in an hvac system that is not designed to handle this resistance it can lower the system s efficiency decrease indoor air quality and put strain on the system s fan.
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This means that air will be sucked through the filter before entering the mechanical equipment.
A filter with a merv 8 rating for instance is a good everyday filter and will remove large particulates from the air and protect your hvac unit from the damage that unfiltered air can cause.
Determine the direction of the air flow.
