Table Pro Con And Tankless Water Heater Chart

User Manual: Pro-and-con-tankless-water-heater-chart

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http://waterheatertimer.org/Pro-and-con-tankless-water-heater-chart.html
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http://waterheatertimer.org/Pro-and-con-tankless-water-heater.html
2011

Type of heater

Whole house
tankless
electric

Whole house
tankless gas

Regular
electric water
heater

Regular gas
water heater

Pro and con tankless water heater

Saves energy

Unlimited hot
water?

Easy to convert

http://waterheatertimer.org/pro-n-con.html
Water
pressure

Particulate in
water

Life Expectancy

Can be integrated
with solar,
geothermal,
heat-pump or other
energy source

No,
High tech
1/2-3/4 gal
-Yes- When unit
- Requires 90-120 Amps
No
per minute sensors will clog
not undersized
Claims of longer life not -Cannot store heat
and fail in 2
water flow
with optimal
- Typical home electric
from other source
backed by warranty.
before heater years without
Can cost more.
conditions
service is 150-200 Amps
softener
turns on
(check main breaker to see
Cannot heat and
No warranty without
Hard for
-Not consistant
Read .pdf
amps of your service)
plumber trained by
store water during off
Low pressure
electricity to heat
with saving
- Upgrade service panel to
specific manufacturer.
peak
causes
Succeptable to
water as water energy or water
convert to tankless electric.
tankless to
rushes past in
lime build-up.
-Always demand
Require surge protector
shut off
De-lime each
pipe. See image - No hot water in
-Homeowner install not
fossil fuel
elements
power outage
year
recommended

Temperature
adjustment

-Temperature
adjustment with
dip switches.
Read Page 4

No savings

No,
High tech
Requires 1-1/4" gas pipe
1/2-3/4 gal
sensors will clog Claims of longer life not
Requires air intake pipe
per minute
and fail in 2
backed by warranty.
Requires stainless-steel flue water flow
years without
Requires 110V electric
before heater
softener
No warranty without
line
turns on
Saves $1-$8 per
Read .pdf
plumber trained by
-Not consistant Requires professional
month
specific manufacturer.
Low pressure
installation
See hidden costs
with saving
Succeptable to
causes
energy or water Located farther from
Not proteced by FVIR
lime build-up.
tankless to
faucets
De-lime each
shut off
- No hot water in
year
Require surge protector
burner
power outage -Homeowner install not
recommended
-Yes- When unit
not undersized
with optimal
conditions

Can heat and
store water
during off-peak

Regular flushing
maintains tank
See how

6-12+ years
-No extended warranty
without professional
installation.

Hot water
available with
You can
-Heats 21 Gal per
'Self-cleaning'
Regular electric water
any flow or
save 4-9%
hour
tanks available
heater can be installed by
pressure
-Homeowner can
operating cost by
See chart
homeowner
diagnose and repair same
insulating tank
CorrosionAllows water
day using locallySee how
- Stored hot
conservation fighting anode
available interchangable
rod inside each
water available
parts
unit
any time.

Adjusting
temperature can
shut down
elements if water
cannot heat fast
enough.

-Temperature
adjustment with
dip switches.
Read Page 4

No
-Cannot store heat
from other source
-Always demand
fossil fuel

Adjusting
temperature can
shut down burner
if air, fuel and
vent don't match.

Yes
-With minor pipe
changes, storage
water heaters store
heat gathered from
other sources
See options

-Simple to adjust
temperature.
Read

Regular flushing
and clean burner
maintains tank
See how

6-12+ years
No extended warranty
Yes
-Heats 41 Gal per
Hot water
without professional
Regular gas water heater available with
hour
You can save
installation.
-With minor pipe
can be installed by
3-5% operating
See chart
any flow or
changes, storage
'Self-cleaning'
cost by lowering
homeowner
pressure
tanks available Homeowner can usually water heaters store
thermostat 10º
- Stored hot
How to install gas water
diagnose and repair using heat gathered from
water available
See how
heater
Allows water
other sources
locally available parts
Corrosionany time
conservation
fighting anode
See options
rod inside each
Protected by FVIR
unit

-Simple to adjust
temperature.
Read

Pressure sensor fails after 2 years
Tankless cannot be exposed more
than 11 grains hard water

3/11/2011 4:46 AM



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