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The Best Air Conditioner Replacement Filters

We compared three air conditioner replacement filters based on owner ratings, specs, and owner sentiment. The Filtrete 16x25x1 AC Furnace Air Filter is our top pick for its high MERV rating and efficiency.

Updated

The bottom line

The Filtrete 16x25x1 AC Furnace Air Filter is our top pick for its high MERV 14 rating and MPR 2500 rating, capturing 77% of small particles. It's priced at $55.51 for a 4-pack. The Amazon Basics Air Filters, at $31.16 for a 6-pack, are a budget-friendly option with a MERV 11 rating and strong owner sentiment. The Colorfil Air Filter, priced at $89.99, features color-changing technology but has a lower MERV 8 rating and fewer owner ratings.

Top pick
Filtrete 16x25x1 AC Furnace Air FilterFiltrete 16x25x1 AC Furnace Air Filter $55.51

Best overall air filter

The Filtrete 16x25x1 AC Furnace Air Filter has a MERV 14 rating and MPR 2500 rating, capturing 77% of small particles. Priced at $55.51 for a 4-pack, it offers superior filtration. Those on a tight budget might opt for the Amazon Basics filters.

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Budget pick
Amazon Basics Air FiltersAmazon Basics Air Filters $31.16

Best budget air filter

The Amazon Basics Air Filters have a MERV 11 rating and are priced at $31.16 for a 6-pack. They offer good value for money and have strong owner sentiment. However, they may not be as effective in humid climates.

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Also great
Colorfil Air FilterColorfil Air Filter $89.99

Best for pet owners

The Colorfil Air Filter features color-changing technology to indicate when it needs replacement. Priced at $89.99, it has a MERV 8 rating and is well-received by pet owners. However, it has fewer owner ratings compared to the other options.

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The field, ranked

  1. Filtrete 16x25x1 AC Furnace Air Filter Best for high-efficiency filtration 9.0/10 $55.51 Amazon
  2. Amazon Basics Air Filters Best budget option with good filtration 8.0/10 $31.16 Amazon
  3. Colorfil Air Filter Good for pet owners with color-changing technology 7.0/10 $89.99 Amazon

Who should buy which?

The Filtrete 16x25x1 AC Furnace Air Filter is best for those seeking high-efficiency filtration and are willing to pay a premium. The Amazon Basics Air Filters are best for budget-conscious buyers who still want good filtration. The Colorfil Air Filter is a good choice for pet owners who want a filter with color-changing technology to indicate when it needs replacement.

What owners complain about

Some owners of the Amazon Basics Air Filters report issues with condensate water capture in humid climates. The Colorfil Air Filter has fewer owner ratings, which may indicate less widespread use or satisfaction. The Filtrete filter has strong owner sentiment but is the most expensive option.

How this was put together

This guide is based on owner ratings, specs, and owner sentiment for three air conditioner replacement filters. We did not test any products hands-on. The evidence is thinnest for the Colorfil Air Filter, which has fewer owner ratings and less detailed specs compared to the other options.