Few minutes work if just the safety expansion valve leaks ( most probably only the valve) 9 l5 `% t$ q: A6 [: W$ F5 j4 y) _% O8 c
Close the main water inlet valve; - b3 Z, s9 g: n( wopen all faucets in the house including showers to drain all water out in the pipe line;) q2 u& u3 k$ l p+ x: p
Close the cold water valve to the water tank if you have one; 4 ?) d4 `4 Y) y8 D3 w. ]Shut down the hot water tank by closing the temperature switch to off;( K8 @7 O Q2 N
Open the drain valve at the bottom to drain all the water out;4 W. T2 o2 M3 e ]) a3 i
Then remove the expansion valve, go to home or Canadian tire. they all have one. : S$ X; |+ T+ _9 q) f# L' g ~/ D, Q
Any doubt text me at 780-880-2698 ! l) P# }) w2 d3 C3 N
sorry I thought you were talking about a hot water tank....# \5 D; h1 A; O) j8 a
D2 p7 h w5 KThe humidifier is even simpler. The drain hose is supposed to have water go thorough the humidifier filter inside the housing and then goes to drain when furnace is on. 3 q4 I E* Z- ?% {$ Y! w2 c7 m: l8 N @( n6 G; W5 h L
If there is no crack at the housing connector, just re-do the connection when the furnace is off.& h- X/ w3 `- ]
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Not a big issue..