I was thinking of replacing my NG water heater with one of the new
tankless ones until I saw the price, about 2K bucks installed. I took
a look at my gas bill for the summer months and figure my current
water heater is costing me about $220 a year to operated and from the
manufacturere info I could save 10 to 20 per cent if I got with the
tankless unit or 22 to 44 dollars a year. Am I missing something here?
This doesnt seem worthwhile at all. The thing would probably need
replacing before I ever reached a break even point.
No, you aren't On top of the numbers you posted, you also have to take into
account that tankless heaters require recurring maintenance and will liely
require a larger electrical service or gas supply.
That's why 99% of the residential hot water systems in this country are storage
There are situations where tankless heaters make sense, but overall economics
rarely favor tankless.
If you only pay 20 a month that isnt much, I paid 470 for a bosch
tankless and put it in myself, gas bill in summer is under 10$, I
still figure I got a 4-5 year payback 8 yrs ago, so im ahead. How much
of that 20$ is cooking and dryer, my unit is a single use, the big
ones cost alot more and all usualy need gas line modifications.
I have 2 tankless electric units I paid $150 each for and installed them
my self and I love them. They are cheaper than keeping the oil fired hot
water boiler on all summer.
Depends on your hot water use. I don't use much. I have one for the
bathroom shower/sink and the other under the kitchen sink. I use only
cold on the washer. I just had to run 30 amp circuits to each one and a
little plumbing. I think it's the best way to go. My electric bill was
$29.00 last month.
Please read the Consumer Reports article on tankless heaters. They
are expensive to buy and maintain. I decide not to get one because
they require periodic descaling, don't work at all during power
outages, and they have the "cold-water sandwich" issue. Most
Americans have tank water heaters. The tankless does save some
energy, but IMO not enough.
On Thu, 30 Jul 2009 08:35:42 -0700 (PDT), email@example.com wrote:
Apparantly, tankless heaters may not heat a portion of the stream of
water. You get hot, then a short time of cold, then hot again. It is
mentioned in Consumer Reports. Not a big deal unless the water is
pouring down your back!
This occurs when you use the hot water, shut it off, and use it again.
For example if you take a shower right after someone else. There is a
few second latency for the burners to reignite, and so you get a short
slug of colder water. It comes out some time after you start the
second use, depending on how long the pipes are from the tankless
heater to the point of use. Of course, if you wait a while between
uses, all the water in the pipes will have cooled, so you won't notice
the extra bit of cool water.
Teh only time I take a shower more than 10 minutes is for muscle
strain, back ache, knee surgery, etc. The pulsating shower heads can
take away some kinds of pain, quickly and easily. In that case, I
would take a longer shower.
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