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William
Water Heater Advice

I'm saving up for a new water heater. I am not that well versed in the topic. There are two that I have been looking that I like so far. One is a "ultra low NOx" natural gas water heater. What are the main benefits of this style? I do not live in a area that requires this style of water heater, but if it is going to help me somehow down the road then I wouldn't mine investing in it now. Also one is 40,000 BTU and the other is 36,000 BTU. Would the larger BTU save me money down the road? The two that i am looking at are listed below;

http://www.homedepot.com/p/Rheem-Performance-Platinum-40-Gal-Tall-12-Year-36-000-BTU-ENERGY-STAR-Ultra-Low-NOx-Natural-Gas-Water-Heater-XG40T12DU36U0/204318413?storeId=10051&langId=-1&catalogId=10053

http://www.homedepot.com/p/Rheem-Performance-Platinum-40-Gal-Short-12-Year-40-000-BTU-ENERGY-STAR-Natural-Gas-Water-Heater-XG40S12DM40U0/204321568?storeId=10051&langId=-1&catalogId=10053

Thanks in advance for all of your advice.

dj1
Re: Water Heater Advice

Low NOx water heaters are the only ones currently sold in my state. Manufactures are building these water heater and market them to consumers in other states, because the day these state pass new emission laws are near.

I think it has to do with the way these water heater burn, with more efficiency and less emission. States always blame innocent consumers for global warming, not heavy industry and oil companies. But that's another subject.

Now, when it comes to water heaters, I always choose the lowest price, with 6 year warranty. Why? the warranty is a joke, practically unenforceable. Let's just say that a 12 year warranty water heater won't give you double quality than 6 year warranty heater. What brand to choose? again, the cheapest one, or the one on sale.

If you replace it yourself, don't forget to replace the following as well: Gas shut off valve, gas supply hose (not if you have rigid pipe gas supply), water connectors, cold water side shut off valve.

The tank water heater, which was invented by RUUD, has been basically the same water heater for over 100 years, with very few modifications. Love it or hate it, it's one appliance you can't beat.

Fencepost
Re: Water Heater Advice
dj1 wrote:

Now, when it comes to water heaters, I always choose the lowest price, with 6 year warranty. Why? the warranty is a joke, practically unenforceable. Let's just say that a 12 year warranty water heater won't give you double quality than 6 year warranty heater. What brand to choose? again, the cheapest one, or the one on sale.

What's the difference between the 6-year, 9-year, and 12-year water heater, besides the price and length of warranty? Absolutely nothing, except the 12-year may have a little more insulation.

The higher price for the longer warranty is to pay for the increased likelihood of the manufacturer having to do a warranty payout. In most cases, a 6-year water heater will last 20 or more years. Only with some "flavors" of water (certain minerals, acids, whatnot) will you see a water heater fail before the warranty expires.

But here's the thing: the water heater is unlikely to fail if the anode rod is replaced faithfully (BEFORE it wastes away). If the water heater fails, the first thing the manufacturer will look at is the anode rod, and if it's gone, it will be CLAIM DENIED. The anode rod is a replaceable, sacrificial element that protects the water heater by attracting ions in the water away from the metal parts of the tank. The ions will react with the magnesium in the anode before they will react with the steel in the tank. And because the anode is considered a wear part, that's not covered by warranty.

Moral of the story: check your anode rode every few years. When it is new, it's about 5/8" diameter. If it is more than 75% gone, replace it.

dj1
Re: Water Heater Advice

" In most cases, a 6-year water heater will last 20 or more years."

It used to be true, not anymore.

Think about it, why would a WH company sell you a heater that will last 20 years, when they can sell you 3 or 4 over the 20 year period instead?

At $500 plus a pop (or $800 plus, installed), every new water heater sold is a 'party' for the manufacturers and installers.

Google "consumers' complaints about water heaters" and see that today's complaints are exactly the same complaints 30 or 40 years ago, plus "new" complaints about newly installed modifications to meet newer codes.

HandyAndyInMtAiry
Re: Water Heater Advice

For one, I would Never, Ever purchase anything for my home from any of the big box stores. Totally cheap junk.
You get exactly what you pay for. The local plumbing supply house in town is an AO Smith authorized dealer.

I just completed re-plumbing my entire house in 3/4" copper. I also put in a new natural gas water heater. I chose a one of the AO Smith water heaters. I like this one for many reasons. They also make a 75 gallon version, but with the fast recovery time of this one, almost double the price for only 25 gallons more, was not worth it. I have had this one for 5 months now. it has actually fired a total of 15.7 hours. We put this one to the test. 6 people taking a 1 hour shower in three different bathrooms, and no one ever went without hot water. All this and the dishwasher was running.

[h=1]50 Gallon - 100,000 BTU Vertex 100 Power Direct Vent Residential Gas Water Heater[/h]Always look outside the big box stores, you will always get higher quality.

Handy Andy in Mt Airy NC

keith3267
Re: Water Heater Advice

NOX is nitrogen oxide and it forms when air is heated during the combustion process. The higher the temperature of the air, the more NOX is formed. One way to control the formation of NOX is to recirculate some of the exhaust back into the flame. This lowers the temperature of the flame, therefore lowers the amount of NOX formed. This usually results in lower efficiency, but there are other factors in the efficiency of a water heater besides the temperature of the flame. Since both water heaters have about the same efficiency, the manufacturer gotten the efficiency from other techniques. Judging by the price, that came at an additional cost.

For all you would ever want to know about NOX, and much more, see this.

https://www3.epa.gov/ttncatc1/dir1/fnoxdoc.pdf

William
Re: Water Heater Advice
keith3267 wrote:

For all you would ever want to know about NOX, and much more, see this.

https://www3.epa.gov/ttncatc1/dir1/fnoxdoc.pdf

Thanks Keith.

EdwardCharette
Re: Water Heater Advice

Check for the type of heater that fits your budget. Storage tank is the most common type with na insulated tank where water is heated and stored until it's needed. They are economical and come with storage options like closet, basement or garage, though efficiency may vary between models, brands, and fuel sources.
Tankless on the other hand don't store hot water, thye heat as the water passes through a series of coils in the unit. It is an energy efficient option.
They usually have a larger front up-front investment and can be hanged on wall thus freeing floor space. They reduce energy consumption by 30%

Tyson
Re: Water Heater Advice

This is a really informative  and also very useful too.ERP in Abu dhabi would like to know more about this.Thank you

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