expired Posted by blackb13 • Oct 5, 2022
Oct 5, 2022 5:34 PM
Item 1 of 2
Item 1 of 2
expired Posted by blackb13 • Oct 5, 2022
Oct 5, 2022 5:34 PM
12-Pack Arm & Hammer Odor Allergen & Pet Dander Control Air Filters
+ Free Shippingfrom $44.50
$89
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Our community has rated this post as helpful. If you agree, why not thank HapShaughnessy
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Thumbs up and repped. Thanks OP.
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i work with HVAC guys all the time and they say the exact opposite. you want a decent filter that will prevent dirt / dust buildup on the coils. that buildup will lessen the efficiency of the unit (Costing you more money) and cause it to die or need maintenance earlier (Again higher operating costs).
airlow is calculated using 2 variables, airflow rate per unit area AND the total surface area. filters with a higher filtration rating have pleats creating a much higher surface area so that the total airflow is not reduced. here is actual measurements showing the difference. higher rated filters have less than a 5% difference in total airflow.
the most important parameter is the condition of the air filter. a higher MERV filter will trap more dirt and become clogged sooner and should be replaced more frequently (Usually every 1-2 months depending on usage). most people will not require anything higher than MERV 11.
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