On Thu, 10 Dec 2009 17:09:38 -0500, "Stormin Mormon"
wrote:

It's an older house, probably 30 plus years old. VERY easy
to have saggy horizontals.

Is it (typically) easier to pour antifreeze into the pipes,
or blow the water out?

Pouring antifreeze into the pipes would have the same problem as
trying to use gravity alone to drain them.

So, do you want easy that doesn't work? In that case, why bother doing
anything? Doing nothing would be even easier, and just as effective!