EMF on infrared panels, what do people actually look at?

Question that comes up a lot so let's keep it practical. When folks shop infrared they often ask about EMF readings from the panels. From what I can tell, manufacturers will publish or test for low-EMF construction, and some buyers bring a basic meter to check near the panels versus a few inches away. Not getting into any health stuff here, just what's measurable and how units describe it. What did you all care about when comparing?