Cirrus Wind Indicator - HVAC Tool Kit with Led Rechargeable Flashlight and Power Bank - Safe and Portable - Trusted Smoke Detector of HVAC Technician

Great for finding vacuum leaks on scientific equipment. "Smoke" doesn't bother people or affect any other equipment. Simple to use

Great for canine scent work activities.

I purchased this to determine air flow for use in my scent work classes.I like the size; I wish the power button did not need to remain depressed while operating the bellows. I have some arthritic changes in my wrist, so it’s a bit uncomfortable to have to hold the button down during operation. Someone with smaller hands than mine (7.5”/20 cm) might find it t uncomfortable as well.I also wish the smoke had greater density, similar to a smoke match. This device emits smoke that’s a bit wispy - it disappears a little faster than I’d like.That said, its size allows me to get it down within about a half inch of the ground - not always possible with a smoke match - and no struggle to start it up in wind.

While I found the ergonomics of the device a bit odd, once I accepted that, I found it to be a great tool. I have over 30 years in the HVAC industry and have used many a smoke tool to test and/or prove airflow direction in labs, etc. I wish I had this tool much sooner, as it certainly is easier than what I have used. I like the fact that the cartridges only ignite and smoke when you press the button, and that one cartridge goes a long ways. It's a fast startup and fast shutdown, no potential for burning you or anyone else. Very nice. I will certainly recommend to others in my industry. I don't think they mention it, but it comes with a neck lanyard, which is nice, so you don't have to figure out where you're going to put it while walking the job.

I like this smoke emitter because it helps me identify window and door leaks.

It’s just alright. I can make use of it, but barely. If you’re trying to use this to map airways for an HVAC unit, for example, then don’t buy it. The amount of smoke it release is simply not enough. Thins out super quick and thus becomes invincible. I just use it for establishing drafts on flues and 70% furnaces. I don’t use it for checking for duct leaks unless it is to pinpoint the source. Over a large area you can’t use it for that because, again, it dissipates too fast. Thermal camera for that.

Product is too weak for any professional use. It would take hours to hunt down air leaks around windows etc. While having to hold a button and push the air pump bag on it. Highly not recommended if you are looking for any type of professional use tool.

Very surprised at how well this works, especially for detecting leaks in an attic space/ducting. Perfect handheld size with lanyard helps when working in areas only an acrobat can get to.Only two very insignificant items I noticed. Neither of these detract from the functionality of this excellent product.1. Directions weren't completely clear on storage of the "smoke" cartridge after removal. Plastic caps necessary to save for storage?2. For my device, the switch for the lights gave very little resistance, "no click", when pushed. Easy to accidentally turn on if bumped at the right spot. Might not notice the lights are on if in the "red" state.Aside from those things, you can't go wrong with this one.