PUREFLOW Sale Tracker, November 2026

More PUREFLOW prices

• PUREFLOW

  
  PUREFLOW Home Furnace Air Filter 14x20x1, with 4 Layers of Advanced Filtration Technology, MERV-13 (2 - Pack)$59.86 at PUREFLOW AIRVisit PUREFLOW AIR
• PUREFLOW

  
  PUREFLOW Odor Control Home Air Filter MERV 13, 20x20x4 Furnace Filter$66.89 at WalmartVisit Walmart

Questions and answers

What MERV rating are PUREFLOW filters?

The listed PUREFLOW filters are MERV-13, which captures fine particles such as pollen, pet dander and smoke. Check the filter's label before buying, since PUREFLOW also sells lower-rated filters elsewhere.

Does a MERV-13 filter restrict airflow?

MERV-13 is denser than the basic MERV-8 filters many furnaces ship with, so it can add resistance. Most modern blowers handle it, but check your furnace's manual or ask an HVAC technician before switching.

Where is PUREFLOW cheapest?

The price differs by store and by size, so the cheapest option changes. Each product page shows the current price at every store alongside its price history, which shows whether the current price is high or low for that filter.

How often should I change a PUREFLOW filter?

Every 60 to 90 days is typical for a MERV-13 filter in a home with pets or allergies. Change it more often during heavy heating or cooling seasons, and check it monthly if you have shedding pets.

What sizes does PUREFLOW sell?

The listed PUREFLOW filters come in 16x25x1 and 20x20x1, both as 2-packs. Measure the slot in your return grille before ordering, since nominal sizes run slightly larger than actual dimensions.

Are there PUREFLOW discount codes?

Deal.ai doesn't list PUREFLOW discount codes. It checks what PUREFLOW products actually cost at every store, so a real markdown shows on this page as a deal as soon as it starts, and each product's page has its price history to tell a sale from its usual price.