- Is MERV 12 too restrictive for my furnace?
- It depends on your system. Many residential systems handle MERV 11 to 13, but check your furnace or AC manual for the maximum rating. If it specifies MERV 8, stay there or use a thicker media filter.
- How often should I change these filters?
- Every 1 to 3 months for most homes. With pets, heavy dust or constant fan operation, lean toward every month.
- Will these fit a 24x30x1 slot exactly?
- Yes, they are nominal 24 x 30 x 1 inches. Actual size can run slightly under nominal, which is normal and helps them slide in.
- What is the difference between MERV 12 and MERV 8?
- MERV 12 captures smaller particles, including fine dust, mold spores and some bacteria, while MERV 8 mainly catches larger dust and pollen. MERV 12 also restricts airflow more.
- Is the 2-pack a good deal at $35.09?
- That works out to about $17.55 per filter, in line with other MERV 12 pleated filters in this size. Compare against MERV 8 packs if airflow is a concern.
- Are these filters made in the USA?
- Nordic Pure states its filters are made in the USA. Check the packaging label on arrival to confirm the MERV rating and country of origin.
- Where is the Nordic Pure 24 x 30 x 1 Merv 12 Pleated AC Furnace Air Filters 2 Pack cheapest?
- At JB Tools, for $35.09, as of our latest check.