I actually have 2 running but I'm cautious to run the majority of the rest of mine primarily because it is the beginning of spring time here and I haven't found a viable solution to combat the massive pollen in the air right now. I understand that I'll obviously still make money if I continue to mine daily if BTC goes back up, its just I'd rather see where things go with the market before I put some time on the newer miners that I have.
How high is your electric rate? I'm at 9.6 cents/kw and I'm still making money. Can you not put in some Merv 3 filters to deal with the pollen without adding too much backpressure?