ONE Air Leak Detection - Handheld Smoke Stick - Draft Detector Puffer Fog Pen Machine Kit

Works great for value. Close in value to smoke pens but better. Cheaply made but as I just noted a smoke pen costs about the same and this works a lot better so comparatively it is great. Well worth the price versus other options. I use smoke testers regularly for work and am happy with it even considering it might not last very long which is why I gave it five stars.

Works fairly well. Difficult to secure plug in fill port, so leaks at times. Pump trigger is inconsistent, large puff at times and less at times. Strength of batteries may have some affect on amount of smoke. I may need to learn to work it. Product met my needs.

These units are incredibly sensitive.1 was not working when I removed it from the box and set it up. Dead on arrival1 broke within a week of using it. Not sure of the problem. Element was heating previously, had fresh juice and batteries. Wouldn't turn on. Cleaned contacts still nothing.Cheap construction, and design. Will not buy again and recommend against this.

This smoke pen has been an incredibly useful tool for understanding air movement in my home, particularly for diagnosing radon mitigation effectiveness. It produces a steady, visible stream of smoke that makes it easy to track airflow patterns around vents, doors, and basement areas.The build quality is solid, and after months of use, it still performs just as well as when I first got it. It’s compact, easy to handle, and doesn’t create any mess or strong odors. Unlike DIY alternatives, this pen provides a controlled and consistent smoke output, making it much more reliable for precise testing.For the price, it’s an excellent value. Whether you're troubleshooting radon mitigation, HVAC efficiency, or general ventilation issues, this smoke pen is a must-have tool. Highly recommended for its durability, ease of use, and affordability!

When it works it works well. The design needs refinement as fluid can easily leak into other parts of the unit, rendering it useless. The method of siphoning fluid from the unit after use is cumbersome and not always effective either

Works great

Works as expected. I was able to precisely track down air leaks. The trigger could use some improvement but that’s a minor thing

Non stop changing batteries. Switch for in off is loose and bad design. Excellent product, poor performance.