Waterheatertimer.org
is a self-help website
Troubleshoot electric water heater
How much hot water for bath and shower 9 ways to save with water heater
New water heating ideas 2010
Do-it-yourself
2011

Preheat cold water using tempering tank

Tempering tank
Tempering tank located in naturally warm area pre-heats cold water using ground temperature see groundwater temp map

Or locate tempering tank in sunny area in warm climates

Use old water heater or buy scratch-n-dent 20-30 gallon water heater. Do not connect electricity. Insulate tank and pipes.


Copper tubing can be used to make tempering reservoir. Copper lasts longer than steel tank <> 2.5 gallons per 100 feet of 3/4" tube
Tempering tank

Tempering tank for tankless water heater

Many tankless heaters are undersized to meet customer price.

Winter time, customer discovers tankless can not heat water fast enough.

Tempering tank can solve problem by pre-heating water before it reaches tankless. 

Problem with tankless heater
1. Contact manufacturer's web site
2. Post problem on plumbing forum:
Tankless turns-on after toilet is flushed
Difficult to diagnose noise in tankless
1-year-old tankless is blowing breaker
Compare tank vs tankless parts
Undersized gas meter causes problems
Forums: 1 2 3 4 5

    Troubleshoot Rheem tankless

Troubleshoot Bosch tankless

Troubleshoot gas water heater
heat exchanger heat exchanger
Make heat exchanger using lathe or manually wrap copper around PVC pipe

Copper tubing can be used to make tempering reservoir. Copper lasts longer than steel tank <> 2.5 gallons per 100 feet of 3/4" tube
heat exchanger
Bock heat exchange water heater see larger
heat exchangerlarger
State high efficiency gas
Heat Exchanger inside water heater

Bock heat exchanger connects with exterior pipes. Customer can use 2 ways. Remove heat from tank for hydronic baseboard heat read1 -or- input heat from external source to increase temperature of water inside tank read2 read3

State high efficiency gas water heater recycles hot gas from combustion chamber.For high-consumption households.

Options vary with no guarantee of net energy gain.

See new water heating ideas 2011
Electric water heater is not working
See troubleshooting steps
Water heater forums: 1 2 3 4 5

Additional links

How to install gas water heater

Leaking water heater

9 ways to save with water heater

How to wire off-peak water heater

Clean sediment from tank

Anode rods

Low hot water pressure
water heater safety precautions
Water heater safety precautions

Replace circuit breaker

See basic 120V and 240V water heater circuits

How to wire Cooper 277

Remove water heater from attic

E-mail: info@waterheatertimer.org
Site map