"How many people are using the Retrotec AC107 smoke sticks for visualizing air flows, drafts, leaks, etc.? These things are hard to buy because of hazardous shipping cost. But if, as a group, we are interested, we can buy these things in…"
"A couple of things: How do we get more local people involved in this group? The only way we are going to have an impact on the energy efficiency in this part of the world is to work together.
Secondly, can we do an informal poll of the…"