Blowing Smoke

May/June 2012
A version of this article appears in the May/June 2012 issue of Home Energy Magazine.
Click here to read more articles about Tools of the Trade
April 30, 2012
Long ago, when I started in this business, I wished for a pair of glasses that I could put on to see how the air was moving. (Now I wear glasses all the time just to see where I'm walking!) I still can't see the air movement without some sort of marker, like cobwebs, dust, or smoke. It is exceptionally useful for leak testing and combustion analysis to see how the air is moving, where it is going, and where it is coming from. Since we can't always get the spiders to build cobwebs where we need them, and dusty shafts of sunlight don't always penetrate into the basement when we are firing up a water heater, we need to rely on a device that creates a visible marker that can be carried around on the air currents.

To read complete online articles, you need to sign up for an Online Subscription.

Once an order has been placed there is an automatic $10 processing fee that will be deducted with any cancellation.

The Home Energy Online articles are for personal use only and may not be printed for distribution. For permission to reprint, please send an e-mail to

SPONSORED CONTENT Home Energy Minute #3: WINTER 2019 Learn more! Watch Video
Email Newsletter

Home Energy E-Newsletter

Sign up for our free monthly