Water heater - one notch cold to hot

[Themp]

Tell me if I'm wrong Sylvan, but I think it's safe to shut down the water heater and keep it at room temp, assuming the room is normally below about 75 degrees.

Found this on a Canadian CDC website:

* 70 to 80 °C (158 to 176 °F): Disinfection range
* At 66 °C (151 °F): Legionellae die within 2 minutes
* At 60 °C (140 °F): Legionellae die within 32 minutes
* At 55 °C (131 °F): Legionellae die within 5 to 6 hours
* Above 50 °C (122 °F): They can survive but do not multiply
* 35 to 46 °C (95 to 115 °F): Ideal growth range
* 20 to 50 °C (68 to 122 °F): Legionellae growth range
* Below 20 °C (68 °F): Legionellae can survive but are dormant

So, at 140 degrees F to the shower heads and faucets, it takes 32 minutes to kill it. Not going to happen in my household...

 

[Reach4]

Where is the legionellae going to come from? You can sanitize your system after doing work. It does not come back from spontaneous generation.

 

[Sponsor]

 

[DIYorBust]

I don't think it's as big an issue at the taps or showerheads, since they are not warm very long. But the water heater could house bacteria for a long time at the set point, and doesn't completely flush out with each use.

 

[Sylvan]

When going on vacation depending how long if it is wiser to just shut it and relight it when you return

Unlike a boiler a water heater has one safety device the T&P a Boiler has high limit and LWCO plus either a safety or a relief valve plus operating controls

 

[Terry]

A former Shoreline firefighter who claims he was badly burned by scalding hot water from a shower in the King County Jail last year has sued the county for negligence.

https://www.seattletimes.com/seattl...as-badly-injured-by-scalding-hot-jail-shower/

 

[Sylvan]

A former Shoreline firefighter who claims he was badly burned by scalding hot water from a shower in the King County Jail last year has sued the county for negligence.

https://www.seattletimes.com/seattl...as-badly-injured-by-scalding-hot-jail-shower/

This is very common where someone says "Shower spoked to extreme temperatures"

As you know I work for over 37 law firms and over the past 30+ years the majority are scalding cases

By saying the water was too hot the "victim" has nothing to lose by contacting a personal injury lawyer as they get a percentage of the award given.

In the majority, the cases are settled out of court as it is time-consuming and expensive to defend against these actions

In one case the "victim" said the water scalded him when I was hired by a law firm I said the water temperature never spiked about 110 DEG

I was asked and paid to "find what possibly caused water to spike " so I gave my expert opinion on what could have caused the spike in temperature.

The city lawyers tried to get me disqualified but I proved I was not only an LMP I was a stationary engineer and the NYCHA offered me a job to be the chief of mechanical installations which I turned down years before


https://pospislaw.com/wp-content/uploads/2013/08/Clinindin-v.-NYCHA.pdf