

Stand in front of the furnace and look for the ducts.

If you remove the filter and there is a significant release of air pressure, this means the buildup of dust and dirt has reduced the effectiveness of the filter.
FURNACE AIR FLOW DIRECTION MANUAL
When selecting the filter, it’s important to strike the right balance and ALWAYS consult your furnace manual to see the manufacturer’s specifications.įor most homeowners, a MERV 7 or 8 pleated filter provides a good balance between cost and filtration efficiency. A furnace filter with a high rating can slow airflow too much, but a low-efficiency filter won’t filter dust very well. You need to be aware of the MERV scale (explained above). What’s the best furnace filter? Well, that all depends on how much you want to spend and what you’re trying to filter. Check out this chart to see exactly what the ratings mean: MERV Rating Chart and see below for more details on selecting the right filter for you. The United States Environmental Protection Agency recommends air furnace filters with a MERV between 7 and 13 for most homes. What Do Furnace Filter Ratings Mean?Īll filters are rated using the Minimum Efficiency Reporting Value, or MERV, scale which goes from 1 to 20. Need more help? Check out our handy guide to installing a furnace filter. This is pretty easy once you’ve found the arrow mentioned above and inserted it with the arrow facing towards the furnace and away from the return duct. That arrow must always face toward the furnace and away from the return duct that carries the air in need of heating or cooling. If you are looking at a furnace filter, find the arrow that indicates the proper air flow direction. What’s The Right Furnace Filter Direction? So, air flows from your ducts, through the filter, and into the furnace. You’re welcome! Which Way Does Furnace Air Flow?įorced air furnaces recirculate air through a home: pushing air (cool or heated) in, and pulling spent air back in for another cycle. Now you never need worry about the furnace filter direction again. So, we thought we put all your questions (and answers you can trust) in one easy to find place. Yes, at CleanAlert we often get asked about Furnace Filters, and if you ask us, the only stupid question is the one that goes unasked. Yes, easy to forget about and then, suddenly it’s time to change them and, oh dear… So.
FURNACE AIR FLOW DIRECTION FREE
It’s easy to forget about them quietly working away, keeping your furnace clog free and air quality clean.
