I've been participating in distributed computing since 1999. I move the computers into my room during the winter. The fan noise also helps me sleep. I cant hear the wife complaining about the electricity bill that way.
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.