Do furnace filters block airflow?

Although air filters are an essential part of your furnace, they can also hinder it from performing efficiently. That’s because filters don’t just block out large particles, they also stand in the way of your furnace’s air flow.

Do furnace filters reduce air flow?

“A dirty filter will slow down air flow and make the system work harder to keep you warm or cool—wasting energy. A clean filter will also prevent dust and dirt from building up in the system — leading to expensive maintenance and/or early system failure.”

Does air filters restrict airflow?

When an air filter is too efficient, it can cause low airflow. … However, they can work so well sometimes that they cause your HVAC system to be less efficient because they block too much airflow. This leads to higher energy bills and could damage your furnace if it overheats.

Do higher for filters restrict airflow?

Generally, a filter with a higher MERV rating will reduce airflow. However, there are many other factors at play such as the size of the filter and the type of blower motor in your HVAC system.

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Do MERV 11 filters restrict airflow?

A MERV 11 air filter has a higher efficiency rating. … Air filters with higher MERV ratings can filter more, but the thickness of the filter material can restrict airflow. Restricted airflow can decrease comfort, increase energy use, and accelerate the wear and tear of HVAC components.

Does higher MERV reduce airflow?

MERV is short for “Minimum Efficiency Reporting Value”. … A higher MERV rating means a higher resistance, which means less airflow. When researching HVAC systems, airflow will come up a lot.

Is MERV 13 too high for residential?

One factor to consider is air flow through the system. … In some cases, using an air filter that is too restrictive for your system may cause low air flow problems as well. MERV 13 is the highest MERV value safe for residential furnaces; the higher ratings are used primarily in commercial units.

Can a furnace filter be too restrictive?

All furnace filters have a MERV rating which indicates filter efficiency. … The makeup of these high-efficiency filters can be too restrictive for the unit, creating a barrier to good airflow. The HVAC system may struggle to pass air through the air filter and expend more energy in its attempts.

Why are furnace filters pleated?

A pleated air filter is mode of a wire back synthetic media that traps and absorbs more particles than spun fiberglass. The air filters increased quality cause it to have a higher price range than lower style filters.

Are pleated air filters bad for your HVAC system?

Pleated filters are bad for your system because they block too much air, forcing the HVAC motor to work harder to pull in the air it needs and burning it out faster.

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Is MERV 14 too high?

MERV 14 is too strong for most home HVAC systems.

And these are some of the best on the market. … MERV is an industry-standard, or rating. The abbreviation stands for Minimum Effective Reporting Value. In other words, it’s a measurement showing how small the holes are in the filter.

Will a MERV 13 filter hurt my furnace?

MERV 13 air filters are the highest-rated air filters for home use. Any air filter with a rating higher than 13 will restrict air flow to the point of which could cause damage to your HVAC system, resulting in an added expense to fix it.

What MERV rating can my furnace handle?

The ideal MERV filters for both air filtering and furnace efficiency are 7-13, experts say. These filters can be used without any modifications to your equipment. Your system may handle MERV 14-16 with no discernable stress.

Will MERV 12 hurt my furnace?

The short answer is this: The best MERV rating for your heating and air conditioning equipment is the MERV recommended by the manufacturer. It’s usually in the range of 8-12 MERV. … When in doubt, choose a MERV 8 to MERV 10 filter rated for high airflow, so it won’t damage your furnace or air handler.

What MERV rating can my HVAC handle?

The EPA recommends MERV ratings of 9-12 because it is the most effective at keeping your home’s air clean. A filter with this rating will prevent particulates as small as 1 micron from entering your HVAC system. This rating qualifies as HEPA (high-efficiency particulate absorption) level.

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