I have a plumbing job where the homeowner lost water pressure to a kitchen sink(pipes in crawlspace, 20 ft away from heater) and bathroom shower(pipes in interior wall 8 ft. from water heater). We heave replaced the on-demand water heater with a regular 40 gal tank. That returned hot water to the bathroom sink and what seems like great pressure, have warmed up pipes in basement to where they all are warm to the touch. Water pressure has not returned to the kitchen sink or the shower.The kitchen sink produces hot water at a trickle. My question is:Even though the kitchen sink line is farther along in the plumbing, if it is frozen in the crawlspace will it affect the shower water pressure? And why would the water in the kitchen come out hot and faster than a trickle if it was frozen or even clogged?? Any input or guidance is greatly appreciated!