How hot is the hot water in your home?

[Rustyt1953]

I have an 81 gallon water heater set at 130°.

 

[handejector]

How hot is the hot water in your home?

I NEVER give out personal data like that on the net!

 

[coltle6920]

All opinions with no real solution IMO.

Where do you live? Alaska? Florida? Chile?

What describes your home? Rancher? Two-Story? Mansion?

Where's the water heater located in relation to sinks or bath?

Water doesn't stay hot in your pipes after turning off a faucet or shower. The longer the distance the longer it takes to replace that water with hot water.

If I remember correctly even a Rinnai tankless water heater doesn't solve every issue. Sure it offers endless hot water but you still have to replace what's already in the pipes. I believe you have to install something under sinks or elsewhere to get "instant" hot water everywhere.

Doesn't matter what temp I set my heater at. All I know is in the Winter it takes a little longer to get a good temp in the shower because the water pipes are colder. Sounds stupid but I believe some heat is lost through the cold pipes as they absorb heat from the water.

 

[chief38]

As previously stated 120° is the minimum temperature to prevent legionella. I keep mine at 130° to be safe. Legionella is nothing to mess with!

If you do a Google search, you will see that 140ºF is the minimum temperature that Legionaries no longer lives, not 120ºF. That is why 145ºF is where I used to set it when I had a water tank. 120ºF will not fully and reliably kill Legionnaires. If you are concerned about scalding, install a mixing valve after the hot water heater or tank.

 

[Rustyt1953]

In review:

 

[Yaworski]

Sounds stupid but I believe some heat is lost through the cold pipes as they absorb heat from the water.

Not stupid, basic thermodynamics.