drears wrote:
4. If you establish the airflow (smoke) to exit with the evacuation system, does any smoke accidently go retrograde back into the house heating/AC ducts?
Thanks for your help.
drears
If the exhaust system is removing air properly the pressure in the room will be less than the surrounding spaces. This will cause fresh air will be drawn in though the gaps, ducts, etc. and then exhausted with the smoke. Leave the exhaust running for 5-10 minutes after you leave. Then run whatever smoke neuralization system you want (or not).