Walmart has
3M Filtrete Advanced Allergen Bacteria & Virus Reduction 1500 MPR HVAC Furnace Air Filter (16" x 20" x 1", AW00DC-4) on sale for
$6.43. Select free store pickup where available. Otherwise,
shipping is free with Walmart+ (free
15-day trial available) or on $35+ orders.
Thanks to community member
ssskom for finding this deal.
Note, availability for store pickup may vary by location.
About this product:- Attracts and captures microscopic particles like bacteria, particles that can carry viruses, and large particles like mold spores and pollen.
- Filter Life: 3 months
- MERV (Minimum Efficiency Reporting Values) Rating: MERV 12
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Great deal on a high MERV filter.
Also note that the lifetime of these 1" filters is rated at around 4-6 weeks. If you go for a 4" filter, they are usually rated for 6 months. I got a pair of 20x16x4 Filtrete filters [amazon.com] from Amazon Warehouse "like new" recently for $15. The 4" filters also have a much larger surface area so the associated static pressure is lower.
And if in doubt, remember the old axiom... if the angle of your dangle equals the sag of your bag then the throb on your knob is constant. Write that down in your notebooks, kids.
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The Arm & Hammer ones I've been using from Home Depot sales always seem to bend upward and buckle from the airflow. Due to having cheap/flimsy frames.
Also note that the lifetime of these 1" filters is rated at around 4-6 weeks. If you go for a 4" filter, they are usually rated for 6 months. I got a pair of 20x16x4 Filtrete filters [amazon.com] from Amazon Warehouse "like new" recently for $15. The 4" filters also have a much larger surface area so the associated static pressure is lower.
And if in doubt, remember the old axiom... if the angle of your dangle equals the sag of your bag then the throb on your knob is constant. Write that down in your notebooks, kids.
Project Farm on youtube did a pretty cool video on this.
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Let's just say that there are some high MERV filters out there that have increased static pressure beyond the specified maximum for some blowers. Essentially, I wouldn't advise anyone to assume they can safely use any filter in their system, particularly a high MERV one, without checking the specifications of both the filter and their blower. Now I'm starting to sound like a lawyer.
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