Last night it got near zero and this morning we have sputtering pipes. Could we possibly have some ice in our lines?

Sounds like it could be ice, did it clear up after running awhile?

Sputtering water out the vents, or just the noise inside?
Your vents may need bleeding.

It has cleared up almost completely... just still getting a little hissing as our toilet boxes are refilling and an occasional sputter from one or two spigots. We will let a spigot open slightly the next couple of nights. Thank you.

Your welcome, and thanks for the update.