SimPureV7 Under Sink Water Filter

Q: Should one of these be installed on the hot water line too? If not, why not?

No, this is for cold water only. The filter unit is not for hot water. It was not designed for hot water Cold tap water goes into the unit and out to a small plastic tube for drinking. Not sure why you want you hook it up for hot water. In fact, all filter devices are for cold water. I am not aware of any unit out there for connecting to the hot water line. Hope this helps

Q: Will this filter remove total organic carbon ?

I have no idea whether it actually removes all total organic carbon or not as I have no way to measure it. However, I bought it just for another extra filter as it is connected directly to the water pipe then run through my Kangen -K8 water unit, which has a special filter to improve water ionization , increase antioxidant, stabilize pH, and filter all other organic carbons. Hope this helps. I do like this unit as produce a strong flow due to the size of the hose on both size and easy to install

Q: Why isn't this used for the hot water line as well as the cold water line? Aren't the very same bad particles present in hot water?

This is a small under sink filter. It is not big enough to handle the volume of a shower or bath.

Q: Is there an easier, safer way to unscrew the filter container? I'm afraid I might damage the hose & fittings. Appreciate any help you can provide.

I remove my SimPure filter, wasn't doing anything, junk science. Better to call professional water company, get whole house filtration installed, easy filter changes, etc. Or zero water pitchers work good