I bought this basic smoke machine from Amazon 2 years ago and it works like a charm: SOLARY Smoke Machine. I highly endorse it for the price which is ~10% of the HF ICON machine. The only drawback is that it doesn't have a flowmeter, but my diagnostics involve looking for a leak location, not the specific leak rate.
I keep telling myself I won't go to HF unless I have a real need for a tool to do a job that can't be done with what I already have. I keep telling myself that...
People love them, but I’v never used one. I’m pretty sure they go on ITC cheaper than that a few times a year, even less 15%. There used to be a HF price tracker website. I can’t find it ATM.