I'm having issues with the pressure in my house lately, it use to be about 50psi now it's 35 so I ordered the 8800 and should be getting it next week. I have the BRS 75gpd 5 stage unit so I have to dismantle it in order to put the pump after the sediment filter because the first three stages are screwed to one another with a quarter inch coupling, I'll work on seperating the first to stages tonight and see if I can get the fittings at the depot tomorrow. Right now I'm lucky if I can produce 30 gallons a day.