Air Filters: Do They Work?

Finding the right air filter can be a challenge. This guide aims to change that.
by the MOTHER EARTH NEWS editors
February/March 2001
Add to My MSN

Air filters can be a difficult item to shop for.
Photo courtesy MOTHER EARTH NEWS editors
Slideshow


Content Tools

Related Content

American Airlines Scores High On Newsweek's Green Rankings List

American Airlines is the greenest U.S. airline for the third consecutive year in Newsweek's Green Ra...

Transformation Tuesday: Is Carpet Actually GOOD for Indoor Air Quality?

A recent study by German carpet company suggests that its Cradle-to-Cradle-certified carpet might ac...

How to Make Your Own Beer

This presentation from the MOTHER EARTH NEWS FAIR in Puyallup, Wash., explains how to get started wi...

HOMEGROWN Life: A First Lesson in Homemaking

HOMEGROWN Life blogger and Pennsylvania homesteading mama Michelle takes a young woman under her win...

One of the challenges, if not the challenge in buying an air filter is that there is no one way to judge performance. A dozen manufacturers include the AHAM (Association of Home Appliance Manufacturers) test sticker and/or logo, which often a measurement of airflow in cubic-feet per minute. The faster the flow, the more rapidly room air is cleaned. How well the air is cleaned is another matter entirely. AHAM advises buying a unit with a CADR (clean air delivery rate) that is two-thirds the square foot measurement of the room you would like cleaned, provided that the ceiling is not exceedingly high. A 20' x 10' room, then, would need a CADR of about 140. Also, frequently seen on both portable and whole-house filters and inserts is information from ASHRAE (American Society of Heating, Refrigeration and Air-Conditioning Engineers). ASHRAE certification offers a more informative measure of cleaning, in terms of "efficiency," or the percentage of air contaminants effectively filtered by the appliance.








Post a comment below.

 








Subscribe Today - Pay Now & Save 66% Off the Cover Price

First Name: *
Last Name: *
Address: *
City: *
State/Province: *
Zip/Postal Code:*
Country:
Email:*
(* indicates a required item)
Canadian subs: 1 year, (includes postage & GST). Foreign subs: 1 year, . U.S. funds.
Canadian Subscribers - Click Here
Non US and Canadian Subscribers - Click Here

Lighten the Strain on the Earth and Your Budget

MOTHER EARTH NEWS is the guide to living — as one reader stated — “with little money and abundant happiness.” Every issue is an invaluable guide to leading a more sustainable life, covering ideas from fighting rising energy costs and protecting the environment to avoiding unnecessary spending on processed food. You’ll find tips for slashing heating bills; growing fresh, natural produce at home; and more. MOTHER EARTH NEWS helps you cut costs without sacrificing modern luxuries.

At MOTHER EARTH NEWS, we are dedicated to conserving our planet’s natural resources while helping you conserve your financial resources. That’s why we want you to save money and trees by subscribing through our earth-friendly automatic renewal savings plan. By paying with a credit card, you save an additional $5 and get 6 issues of MOTHER EARTH NEWS for only $12.00 (USA only).

You may also use the Bill Me option and pay $17.00 for 6 issues.