Stick men
Always bring helpers
Waterheatertimer.org
is a self-help site
Clean sediment out of water heater How to wire tankless electric
How to install point of use water heater Point of use water heater
Compare 16 ways to control water heater Troubleshoot gas water heater 9 ways to save with water heater
How to install recirculation system Point of use water heater
How electric water heater works Troubleshoot electric water heater Figure Volts Amps Watts for water heater
Type 1 and type 2 surge protection surge protection
Search waterheatertimer.org / all results
Search using Find button  

 Tweet button  
Water heater temperature for killing bacteria/ 140 degrees F
water temperature for killing bacteria Bacteria that causes legionnaires disease can grow in a water heater at a temperature between 68 and 122F.  Inhaling the bacteria laden hot water steam in a shower is the worst thing you can do with it.  Bathing and hand washing dishes is less of a hazard.  Very hot water will kill this bacteria.   The length of time it takes depends on the temperature of the water in the water heater. 

* 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
hatco booster heater Buy Hatco:
Hatco booster heaters at Amazon

What is this thing?
180-190 degree hot water
Genenerally used for commercial applications such as washing dishes.
Use for sanitizing or commercial process
Gas and electric models available
Single-phase and 3-phase models

Resources:
How to wire Hatco booster heater
How to set temperature on ordinary gas and electric water heaters
water heater temperatue to kill bacteria 120 F temperature
120 F is considered optimal household tank temperature for saving money and giving ample amount of hot water, while posing least amount of scalding danger. But does not kill bacteria.
Takes 5 minutes to cause skin burn. This is especially important among children and elderly who are least able to recognize and escape dangerously hot water such as 140 F.

100F temperature
More recently, manufactures are setting 100 F water heater temperature on new water heaters. This action, plus lowering hot-water-usage-estimate for average family, allow manufacturers to claim energy-efficiency gains.

Resources:
How to adjust water heater temperature
Family chart for setting timer based on incoming water temperature and thermostat setting
water heater temperatue to kill bacteria 140 F is considered temperature for killing bacteria on wash day.
140F will kill bacteria, and is required for some institutional and commercial applications such as washing dishes and bedsheets. Expensive commercial grade water heaters are also required by code to meet quantity and safety requirements in commercial applications, often requiring temperatures as high as 180.
Household water heaters can usually be set from 90 to 150 degrees.
Marathon residential electric water heater can be set as high as 170 read more.
However all water heater thermostats are calibrated approximately and calibration can change over time depending on many factors including pipe insulation, distance from tap, sediments and age of heater ... suggest use cooking thermostat at tap to verify temperature.
Bad single-handled faucet cartridge can add cold water at tap and reduce temp Read more

140F hot water is dangerous:
140F can cause serious burns in less than 5 seconds. See chart
water heater chemicals High temperatures distill chemicals out of water
Temperatures at or above 140F will distill chemicals out of water... and these chemicals can fill bottom of tank... so flush water heater once each 6 months using following instructions:

Buy:
Shop Amazon Industrial
Shop Amazon - Industrial

Resources:
How-to-flush-water-heater
Ways to increase amount of hot water
Tank pressure High temperatures increase pressure
Temperatures at or above 135 F can increase water pressure.  Any home can have high pressure for different reasons. Pressure over 80psi can damage tank and pipes and fixtures. Install pressure reducing valve, expansion tank, and pressure gauge.

Buy from my links:
Water pressure gauges
Pressure gauges at Amazon
Safety Equipment for Professionals
Industrial and scientific Amazon

Resource:
Read about expansion tank, pressure valves and gauge
Change water heater temperature using timer Automated temperature change
If you have electric water heater, you can toggle between temperatures using timer or switch or home automation.
If you have gas water heater, there are programmable and remote control products that change gas water heater temperature between 120 and 140 F


Resources:
How to change temperature  on electric water heater using timer
Programmable-gas-water-heater-timer
Z-wave
Mixing valve Mixing valve
Mixing valve lets you have different water temperatures in different parts of home.
Store hot water from solar tank or off-peak heating

Buy from my affiliate links:
Mixing valve kit at Amazon
Water heater mixing valves at Amazon

Resource:
Advantages/ disadvantages/ How to save hot water using mixing valve
Support the economy:
Buy water heaters from my associate links:

50 gallon Gas water heaters at Amazon
40 gallon gas water heaters at Amazon
50 gallon Electric water heaters at Amazon
40 gallon electric water heaters at Amazon
Hybrid / heat pump/ water heaters at Amazon

Resources:
How to install gas water heater
How to install electric water heater
Troubleshoot gas water heater
Troubleshoot electric water heater
Point of use water heaters
Resources:
Troubleshoot Gas valves with manuals
Icon gas valve

How to replace water heater element Waste King disposal
How to wire tankless electric


Install point of use water heater
Titan tankless

Contactors/ relays
Type 1 and type 2 surge protection surge protection
Programmable timers

Woods timers
surge protection
Anode rods anode rods
Recirculation system

Tankless recirculation
Point of use water heater
Install and troubleshoot garbage disposal Waste King disposal
Buy
Electronic parts

Industrial supplies

Tools and home improvement

Home and garden

Hayward pool
Pentair pool

Southwire electric
Buy
Tools

DEWALT
Black and Decker
Stanley
SKIL
Makita
Porter-Cable
Bosch

Irwin Hand tools
Klein hand tools
Fluke electrical testing
Dremel hobby tools

Campbell Hausfeld air powered
Tekton automotive

Powerbuilt automotive
Saws and saw blades
box timers Resource:
Compare box timers
DPDT timers
Intermatic
Control water heater w/ Z-wave
Intermatic control centers Resource:
Intermatic control centers: and parts
Digital control centers and parts
Tork control centers and parts
Subpanels
All control centers and parts
Enclosures
programmable timer Resource:
Programmable timers
Countdown timers
Off delay timers
On delay timers
Timer modules
Din rail
Twin & one-shot
Woods
Intermatic
Tork
Low voltage power packs Recirculation systems
Enter Amazon from my links
Amazon

E-mail: geno03245w@gmail.com
My response might end up in spam folder, check email folders
Waterheatertimer on Twitter