Are you talking about the plastic dip tube. A hot water tank should never leak, unless there is a problem; if the tank is more than five years old, it may not be worth fixing. The heater is in a closet outside, attached to my deck, with the back wall of the closet attached to my living room. Heres a quick look at some experts. Step 2: Remove the outside access covers. Why Plastic Caps are Used on Top of Water Heaters, Damaged Plastic Caps Problems And Their Solutions. This mainly occurs if your house has water pressure regulator problems. Ok, I just installed a new water heater, and its my first time using this new lead less solder.HATE IT !!! Acidity of alcohols and basicity of amines. Find My Store. What You Need to Know About Venting a Hot Water Heater - The Spruce Interest free financing for 90 days. Water coming out was still hot, but rusty for the first couple of seconds, then clear. The blower pushes the exhaust and excess heat through the exhaust venting. Water Heater Backdrafting, Part 1 of 2: Why it Matters and What to Look For Both of them help to function the heating system of the heater. A damaged water heater plastic cap doesnt cause huge problems in the system. Yeah, I screwed on the copper by female adapter first then I soldered everything from there on so Im guessing that the heat transferred. If you can see condensation at the top of a water heater tank, youre basically watching the water heater backdraft. Capping a Water Heater Drain Valve | Water Heaters | Plumbing | Repair E V E R Y building should have one or both of those https://heatinghelp.com/find-a-contractor/detail/charles-garrity-plumbing-and-heating. JustAnswer has verified Experts who respond to questions submitted by users. The blue cap sits on top of the cold inlet. That should solve your problem. But the red one doesnt come with a tube similar to it. But it may not be the caps fault. You should solder the fitting to a piece of pipe, cool it down then thread it on. Gain access to our free AOP (Ask a Professional) Section to get real answers for your questions.