so, the coffee machine is about 0.18. i've never noticed it as a problem, previously.
the 150 W bulb is the 3:00 reading, suggesting it's about 0.15 if run alone. i think a 0.01-0.02 fluctuation is acceptable noise. this is far too much for one light, either way - and is consistent enough.
and, it would seem as though the fan is running at 0.1/hr or so. this is kind of an unavoidable cost, i was more interested in getting the fan alone so i can get a clean reading on the heat lamp.
i measured the fan with the heat lamp & the fan with the led this morning, which i'll be able to compare tomorrow afternoon.