Adding a new valve to existing system
Greetings:
I would like to add a new valve to my existing system WITHOUT running a new wire. I'm considering 1) the "add-a-zone" product; 2) the "doubler" product; or 3) something else?
It looks like the add-a-zone is more flexible (and a tish cheaper).
Does it really work?
Are there long term issues?
Am I wasting my money?
Is there a better product out there?
Thanks in advance!
Jim