High Velocity Air Flow Furnace Filter

Maintaining the furnace manufacturer s specified airflow is critical to achieving energy efficiency and maximum life from the blower motor and heat exchanger.

High velocity air flow furnace filter.

See my article on the continuity equation for more on this. 4 and 5 filters help maintain airflow in heating and cooling systems which helps prevent stress on the system and reduces the amount of energy needed to reach desired indoor air temperatures. 3m filtrete filters are an economical upgrade from cheap one month filters. Increase the pressure in the duct system.

The higher the merv number the more expensive they tend to be. Furnace manufacturers prefer the traditional spun fiberglass ac filters merv 2. The numerical range is from. This highly rated filter has the highest fpr possible and comes in a wide range of sizes fitting most all furnaces.

A minimum merv 0f 4 is needed to protect the furnace a good value to help indoor air quality is 8 9 this blocks more with the max 16. The 3m filtrete dust pollen furnace filter is an electrostatically charged furnace filter ideal for high velocity hvac systems. With that face velocity and those dimensions the air flow rate is 1 367 cubic feet per minute cfm. These filter out enough of the large particles to protect the furnace while providing maximum airflow.

Flow rate equals area times velocity. Freeze the air conditioner coil. Increase the energy use of the system. Reduce the air flow.

They used 492 feet per minute fpm as the face velocity because that s what the ashrae filter standard 52 2 calls for. Purifies air by capturing a high percentage of household air particles including those at 0 3 microns. Most residential filters range from 4 to 12. High velocity means the filter can handle high flow rates.

Filberbuy has several different types of well made furnace filters. Add resistance to the air flow. That s only a benefit as long as the air flow isn t so low that it turns the condensate to ice. It has an electrostatically charged design capable of attracting and trapping larger allergens.

This furnace filter has an fpr rating of 10 or a merv of 13 meaning it can capture particles as small as 3 microns and it even has an electrostatic charge that helps attract microscopic particles.