anyone know about heating systems in houses?

[thefishingfreak]

tahhh dahhh!!!!
i fixed it!!!!
thanks guys!!
scratch one more from the honey-do list

there was tons of air in there!
lots of noise too.
i opened the water in--> valve till 20 psi, ran upstairs bled from lowest level to top. then back to the basement to raise the pressure again, then back upstairs for the very top floor. and voila' water now comes out.
back to the basement, raised the pressure back to 20 psi, and the whole house is toasty warm, and no more creeks either.

thanks again i knew i would find out here

should i keep it at 20 psi?
mike