Water Supply Fixture Units (WSFU)
Calculate WSFU for water supply pipe sizing. Free, instant.
How to Use Water Supply Fixture Units (WSFU)
1
Enter fixture counts.
2
Get total WSFU.
3
Use for supply pipe sizing.
Frequently Asked Questions
What pipe size for WSFUs?
3/4" copper for up to 14 WSFU, 1" for up to 30 WSFU.