Trying to find air leaks or test ventilation systems? This REGIN smoke pen is the professional's choice for air flow detection! It produces dense, cool white smoke that perfectly reveals air movement patterns around windows, doors, HVAC systems, and building envelopes. Each wick provides up to 30 minutes of continuous smoke, and you get six wicks in the package for three hours total testing time. The smoke has great hang time, letting you watch air currents over distance, and it reacts to even the slightest drafts. What's really smart is you can start and stop the smoke by capping and relighting the wick - no waste between tests. The smoke is completely non-toxic and leaves no ash or residue, making it safe for indoor use. Perfect for HVAC technicians doing air balancing, home inspectors finding energy leaks, or even K9 trainers for scent work. The reusable pen design is durable and the wicks store safely inside when not in use. Much more reliable than homemade smoke methods and way more portable than electronic smoke machines. Whether you're troubleshooting drafty rooms, verifying negative pressure rooms, or testing ventilation effectiveness, this simple tool gives you instant visual feedback. Seriously, if you work with air systems, this belongs in your toolkit - it makes invisible air movements completely visible!
