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Hot water heater replacement

Old 11-21-2008, 09:30 PM
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Default Hot water heater replacement

Got home from work on Friday to find a leaky hot water heater. Turned off the cold water in line and drained it. The current unit is a 40 gallon gas model that is 11 years old. Time for a new one I suppose.

Seems pretty straightforward to replace it myself. It is plumbed with a recirculating unit but in looking at the set up I don't see why I couldn't replace it myself (with some help for the heavy lifting). One line in, one line out and the gas line plus the recirc unit.

Any suggestions before I dive in this weekend?
Old 11-21-2008, 09:38 PM
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Default Re: Hot water heater replacement

Gas fitting is as easy as water plumbing in my opinion, but I don't mind a little water in the basement, but I certainly have a problem with blowing up the house......you know what I mean? You just make sure you double check your gas fittings with soapy water after you have reconnected that gas line. Other than that, the water lines are a walk in the park.
Old 11-22-2008, 09:52 AM
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Default Re: Hot water heater replacement

When threading the gas pipe (probably schedule 40 galvanized) into the control valve, don't use teflon tape on the threads. Home depot and lowe's sell a product called rectorseal which seals gas lines much better. Use that instead. Mix it in the tube real well by squeezing it around with the cap on, and apply liberally. Gas has a tendency to make teflon tape brittle over the years.
Old 11-22-2008, 11:49 AM
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Default Re: Hot water heater replacement

I have heard pros and cons of draining the water. I know there is a rod inside, or two that should be replaced to extend the lif.


I was looking at those on-demand heaters. It makes sence not to have 40 gallons of heated water just sitting there when not in use. Anyone have one.
Old 11-22-2008, 01:12 PM
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Default Re: Hot water heater replacement

kingair - 11/22/2008 10:49 AM

Anyone have one.
I've got a propane fired noritz.

Saves me 50$ a month on electric, including the price of propane. Search out hot water heater here, and you'll see my posts.
Old 11-22-2008, 07:16 PM
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Default Re: Hot water heater replacement

If you need to replumb, use the copper flex lines for hookup. Sold at Home Depot, they have a corrugated look to them and are semi flexible. Makes hookup a snap and they meet code. Follow the directions that come with the heater, which will tell you to remove and inspect the anode every 3-5 years. Very few people know a water heater needs this maintenance, and that's why they corrode and leak. Just like ignoring the zincs on a boat.
Old 11-23-2008, 04:55 PM
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Default Re: Hot water heater replacement

Get a on demand h2o heater they save loads of $$ and plenty of hot h2o
Old 11-24-2008, 04:10 AM
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Default Re: Hot water heater replacement

blueh20pc - 11/22/2008 4:12 PM

kingair - 11/22/2008 10:49 AM

Anyone have one.
I've got a propane fired noritz.

Saves me 50$ a month on electric, including the price of propane. Search out hot water heater here, and you'll see my posts.



This is what I have been looking for, $50 savings per month on the electric bill after you deduct the additional cost of the gas? right? I'm not a plumber but would do either install myself, I do gas lines in my line of work (HVAC) and my buddy owns a plumbing co. if I were to get stuck. So, what is the cost of each type of unit so I can figure out how long it takes to break even then start paying me? I guess the standard hot water heater is about $300 from Lowes? (I really don't know).

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