Would a Watts Premier Hot Water Recirculation Pump (http://www.costco.com/Browse/Product...pnav=&cat=&s=1) (or any other brand name) help to increase hot water pressure if you install it directly to the hot water output pipe and then turn it on ONLY while taking a shower? I was thinking of doing this because my hot water pressure throughout my apartment is quite low (despite checking valves and so forth from reading the other related links) and since I rent the unit I (and the landlord won't) want to do any plumping changes. I thought that this pump would help water flow, but I'm worried that it might empty the gas water heating unit faster than it gets supplied... however, it would only be for 15-30 minutes, so I don't know if this would hurt or not?
Anyone know or have tried this?