How much space does a home dialysis machine take up?

Depending on the machine you use, (probably one similiar as at your unit). The set up I use is F2008H 51/2' tallX3 1/2' deep and about 2 1/2 ' wide. The depth is more than in the unit because a RO system has been added to the back of with some customization. Hoses are what you determine. Depending on your drain and hookup. i.e. bathroom

My Fres 4008B and associated paraphenalia beside the bed takes up 2.5 x 1 metre (my side of the bed). No real problems.

My dialysis machine is the same siaze as the one used in-center. Behind it on a table is the modem and computer for monitoring.
We had to remove the doors from my husbands double closet for the RO and DI machines (water treatment)and the supplies.The water supply line runs from the DI to the dialysis machine. The closet is filled from top to bottom. We also have a stack of supplies in the basement.

Most FMC clinics use shorter style machines. They resemble the 2008H machines used in the facility but they are actually about 8" shorter. I believe they are about 4' tall. I would have to measure one, but its somewhere between that. The 2008H machines are about 1 1/2' x 1 1/2' at the base but are thinner after the base. They also weigh about 300lbs or so.