alright Chris here we go, I have a Sears Kenmore unit, heard not too good things bout Haier units (thermostats) I understand there is a fix tho, I have a 5# co2 bottle that I do an exchange on, I use 1/4 barrel kegs, 1/2 barrels are too heavy to hump. my unit came with a single stage regulator that showed "delivery" psi to keg, not what is left in the cylinder. I upgraded to a two stage regulator from micromatic that shows both delivery and remaining psi. lastly bout the tank psi thing, my understanding with that is this, when a co2 tank is put into a refridgerated unit the psi reading will drop to approx. 500psi, compared to if you hang your bottle outside the unit it will read 1800psi if completely filled. now if mine drops below the 500 mark, it is time for a refill, hope this helps you bud, dam now im thirsty [
]