More than just a filter.
Colorfil filters capture not only dust and pollen like regular filters, but also eliminate odors and chemicals in your air that other filters can't at a molecular level.
Proudly built with support from:
Colorfil is the only filter that shows you when to change it.
Colorfil filters change color from pink to yellow as they work so you'll never worry about knowing when to change them.
Get way more out of your filter.
Colorfil has significantly more capacity and efficiency for toxic and odor causing chemicals like amines than existing filters that try to remove chemicals.
Your loved ones deserve clean air.
Colorfil air filters were originally built for astronauts with funding from NASA, NSF, and US Army to meet their rigorous demands. Now Colorfil brings clean air to your home, your pets, and your family, wherever you may be.
Colorfil Purple HVAC Filter
Colorfil, NASA-backed air filters eliminate odors and chemical contaminants that other leading air filters can't. We donate $1 for every Colorfil Purple filter purchased to help animals while supplies last.
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Our happy customers
"I found the smell embarrassing if we had company in that room. The filter was amazing! I was amazed at what a difference the air purifier and [Colorfil] filter made!" - Abby
“What the filter has done so far, I can’t put a price on that. It’s priceless how it has given my son relief from his allergies.” - Candice
"we installed the [Colorfil] filter and within one hour the smell was gone and it stays gone (even when she forgets to clean the cage). I am a complete convert — these filters are AWESOME!” - Maureen
+ What is your MERV rating?
Colorfil filters are MERV 7 equivalent, but they remove a lot more than just dust. Colorfil’s “chemisorptive” coating captures chemicals and odors at the molecular level, which regular filters cannot.
Higher MERV-rated filters generally restrict airflow more, while lower-rated filters such as glass-fiber products aren’t effective against dust or pollen. Our filters deliver a good balance for particulate filtration while also providing Colorfil’s unique chemical removal and color change.
+ What does Colorfil remove?
Colorfil is a filter made with a coating that captures and neutralize chemicals and odors from the air. Designed by our engineers from the University of Illinois at Urbana-Champaign to remove toxic chemicals from spacecraft and space suits, Colorfil primarily targets amine compounds such as ammonia, pet, bathroom, and cooking odors, and fumes from household cleaners.
Our filters use Colorfil technology in combination with conventional air filter materials to deliver chemisorptive capability in addition to removing dust, pollen, mold and other small particles from your air. Colorfil also lets you know if it has done its job through a vibrant color change from pink (or purple) to yellow!
+ How does the color change work?
Colorfil's color changes in proportion to the amount of chemicals it has captured. As our chemisorptive coating neutralizes gas molecules from the air, Colorfil displays an intrinsic color change that acts as a signal for how much capacity remains for removal of more chemicals and odors.
While the color change indicates most of your filter’s capacity to absorb chemicals and odors has been consumed, a yellow Colorfil filter will still function effectively to remove particulates such as dust and pollen until its next “color change” turning grey from dust.
+ How long do Colorfil filters last?
Our filters generally last 1-4 months with typical use, though actual lifetime depends on air quality, time of year, HVAC use, and other factors such as pets in the home and use of certain chemical cleaners. Even in the same home, filter life may vary quite a bit throughout the year. With Colorfil’s color change you get to know exactly when your filter has expired, rather than relying on an arbitrary one-size-fits-all recommendation.
+ Is Colorfil safe?
The key active ingredient in Colorfil is non-toxic and naturally found in fruit! Unlike air fresheners, aerosols, candles, and incense, Colorfil captures odors and other gas molecules without adding any chemicals to the air.
We produce, handle, and use our filters daily and are confident in the safety of our product. However…we highly recommend that you do not eat Colorfil, rub it in your eyes, or use it as a bath towel 😉. You can view our full terms and disclaimers here.
Who we donate to.
We are donating $1 of every Colorfil Purple filter purchased, while supplies last, to the Champaign County Humane Society to help save lives. The donation goes to help animals in need of adoption, whether it's feeding them, sheltering them, or providing them with the necessary medical attention; see how they distribute their spending here.