I'm still in the process of getting my "farm" setup and I've had some (a lot) assistance from a friend who's a master electrician.  He started talking about checking out the power factor and looking into power factor correction capacitors.  So I've started doing a little research on this but are these devices something that would benefit ASIC miners? 

Little backstory on my "farm" it was an older (1980s) industrial shop with tons of 8' T8 fixtures, 3 old heat pumps, just basically everything you'd expect from 1980's efficiency.  We are using the heat from the miners currently to heat the shop (last week it was 2F outside and shop temp was 62F inside).