We'll do whatever it takes to address your plumbing concerns and leave you satisfied! Cemline electric boilers are provided with a a.s.m.e pressure relief valve the valve is sized to relieve the total btu input of the heating elements. Q why do i need a replacement boiler? Fast acting drain unblocker with granule soda used with hot water instantly opens clogged drains faster than any liquid drain cleaner. Excellent i appreciate the fast turnaround time.