Gas vs Electric Water Heater (Which is Best?) - Ask a Plumber

water heaters which is better gas or

electric or on-demand tankless maybe

even solar in this video we're going to

talk about the difference in the water

heaters and the money you can save by

using different water heaters


so the easiest way to tell if you have a

gas or electric water heater is by

looking at the front this is a gas

control valve and there's actually a gas

valve coming out of the wall then it has

a line that comes to it and comes on the

side this gas control valve let you know

how you've got your water heater set

this is really your thermostat so on the

inside of this it's got a piece that

goes inside the tank that actually

checks the temperature of the water

heater and controls the gas and the

flame to let it know when to make the

water hotter if anybody ever asks you do

you have a gas or electric water heater

it's real easy to tell by looking at the

front the gas control valve or you're

going to have a panel that is removable

that actually has a thermostat and a

heating element behind it now most big

water heaters have two elements a high

one and a low one and two thermostats

now the thermostats actually attached to

the tank so that they know how hot the

water is to tell the power when to kick

on and heat up the element the heating

element is really what's inside that

heats up the water on an electric water

heater I'm going to show you some things

on the inside that help make a

difference but one more thing on the gas

water heater up on the top if you've got

the round silver pipe coming up out of

the middle of it that's your gas flue

and it may be 3-inch it may be 4-inch

but having that is what gets the bad

gases out of your house that way those

gases go out the roof and vent out into

the atmosphere so now let me show you

what's on the inside now I'm gonna start

with the gas water heater because

there's a few more parts I'm also going

to tell you what they have in common

so the dip tube actually comes in the

cold water and it brings the water in

the cold water in down towards the

bottom of the tank now the reason that

it does this is because heat rises on

the gas water heater you've got your a

burner assembly down at the bottom under

there and when it kicks on I mean it

literally lights up a flame and then

what happens those fumes that I was

talking about they go

right up the middle then this flu now as

you see this flu has a baffle in it and

it's got pieces built on it that keep

that heat coming outside that way it

heats up the inside also so you've got a

heating source down here but when those

hot gases come up it hits that metal on

the inside and that actually helps make

them more efficient so when this dip

tube comes in it has holes in it and

what those holes do they kind of push

the water out to help circulate the

calcium and magnesium in the bottom to

keep it in the water like it should

everyone knows they should flush their

water heaters at least once a year what

I like about these these come with a

brass drain valve and I like that

because they don't corrode up as much

and you don't have as many problems with

them the flue as you see is not on the

inside of the electric water here where

the gas water heater heats with the

burner and the flue pop the electric

water heater heats with elements now

there's one in the very bottom and it's

about eight inches off the bottom of the

tank and then there's the other one up

here now remember if you ever have to

change your heating elements turn the

power off before you start turn the

power off drain the water heater out and

then you can open these panels you can

change out the thermostats

and heating elements if you use the

right ones on a gas water heater you can

change out the burner assembly you can

change out the gas control valve the

thermal coupling everything here it can

be changed out the only thing that you

don't change out is the tank I tell

people all the time as long as your

water heater is not leaking

you can probably fix it but the question

is do you really want to go back and

think about it how long am I gonna be

here how much is it gonna cost and with

that money be better off spent on a new

water heater the parts you see on an

electric water heater are at the very

top you've got the panel that you can

remove that's where your power comes in

that's where you want to test it before

you start working on anything test it

make sure the breaker is turned off

before you open and undo anything now I

know you've got to open the top to test

it but don't be opening the sides or

anything like that until you've turned

the power off and you've got everything

set the drain valve is the other one

is really important guys if you flush

this water heater every year you're

going to keep the calcium and magnesium

out of the bottom of it and you're

actually gonna make it last longer now

the other piece that they have in common

on the inside right here you see the

anode rod now I recommend the customers

that you replace that anode rod at the

end of the first year the reason being

an anode rod is made out of calcium

magnesium aluminum different things and

what it does it's a sacrificial rod

meaning any little impurities on the

inside of the tank is they start to form

the anode rod sacrifices itself and

since pieces out to seal those up that's

why we recommend the people you don't

flush a water heater after six or seven

years five or six years if you've never

flushed it before if you start flushing

it from the very beginning you're not

going to get a lot of buildup but you're

also not going to lose the part that the

anode rod has sacrificed to repair the

other thing they both have in common is

a temperature and pressure relief valve

and why that's important that is the

safety feature for a water heater that

is what is going to keep the water

heater from getting too hot and either

expanding and rupturing or actually

exploding it can happen but it doesn't

happen very often because water heaters

are built to be safe

I've showed you some common things that

they have and I've also showed you the

differences in them the other big

difference is a gas water heater this

one here the insulation is a lot thinner

than the electric they build in that way

so the electric can hold the hot water

longer if they made them that thick on

the gas water heaters the tank would

even get bigger they have made them more

efficient lately and that has made the

tanks bigger so you may not be able to

get a 50 gallon water heater in the

exact same hole you take it out as

before no your water heater annoying

what you can do to repair it can save

you a lot of money the thing to remember

is make sure you shut off your ball

valve up top each water heater should

have a valve coming into it on the cold

water side I've seen them on the hot

water side going out for complete

isolation but to be honest as long as

you've got the cold water shut off

and waters not crossed anywhere you

shouldn't have any problems at all

because if you've ever had to work on a

water heater and change out any parts of

it do me a favor leave me a comment down

below and let me know what did you do

and how did you do it

now I mentioned turning off the power to

the hot-water heater before you work on

it another big tip that's gonna save you

a lot of headache do not turn the

electricity back on until you've done

all the repairs and what I mean by that

is if you're changing the elements out

you need to shut the water and drain it

down so you do that you remove the

heating elements you put the elements

back in you fill it back with water not

until that point do you turn the

electricity back on the reason being if

you turn the electricity on and you

don't have water on this it's gonna pop

it's gonna break it's gonna burn up then

you're gonna be right back in the same

problem you've had and I've actually had

these burn up and break so bad it was

hard to get them out guys think about it

turn the power off to your water heater

before you start working it drain it

down change your elements change your

thermostats change what you're changing

and then fill it back up with water and

then turn your electricity back on now

you don't have to shut off the water to

change out the thermostats just the

electricity but my thing is if you're

changing out the thermostats go ahead

and change out the elements now you've

pretty much rebuilt your hot water

heater one other little tip if I had a

water heater with a plastic drain valve

I would actually want to change that out

to a brass one before I ever use that

water heater those plastic valves are

okay but the corrosion gets in there and

they get where they don't work well the

metal ball valves for a drain valve on a

water heater weren't perfect and I think

that's a great investment so guys now

you know the difference between gas and

electric water heaters do me a favor let

me know below which one you have which

one is most popular in the areas where

you live leave me a comment down below

and let me know what you think

check out the video where we did the

flush on the tankless water heater as a

homeowner that can save you a lot of

money as a plumber that can help you

make a lot of money around your weight

bill believe AP the expert plumber i'll

see you on the next video

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