Energy difference in 40 gallon vs. 50 gallon water heater?

downsouthMay 12, 2012

We are changing our gas water heater to an electric water heater. Our electric co. gives a better rebate on a 50 gallon heater with a 12 year warranty, but hubby is concerned about heating 50 gallons of water since it's only the two of us. (FYI, we will no longer have any gas at this house, hence the conversion. Getting rid of propane heat and going with a heat pump system.)

Any advice on a 40 gallon vs. a 50 gallon as far as energy savings? Any other advice you want to offer would be appreciated too.

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The difference in energy usage between the two is negligible.

I would recommend a 50 gal electric as the minimum size because they don't recover as quickly as a gas heater.

You can always look for the Energy Factor rating on the water heater to know for sure.

    Bookmark   May 12, 2012 at 11:55AM
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BTW: Just noticed your name...

You might consider heatpump water heaters (also called Hybrid) if you live in a warm climate.

GE markets one as does Rheeem. There may be others as well.

They have an energy factor of 2 verses about0.98 for most electric. They take heat from the surrounding air, so they aren't a good match in cold climates.

Here is a link that might be useful: Rheem heat pump water heater

    Bookmark   May 17, 2012 at 8:33AM
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I think the heat pump water heaters add either hot or cool air to the surroundings...if that is an issue...

    Bookmark   June 13, 2012 at 1:33PM
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And, they are noisy. So, it isn't a good choice for a water heater within the living space (as is the case at my house).

    Bookmark   June 13, 2012 at 2:12PM
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Isn't an electric more expensive to run? How much is the rebate? Look at whomismgiving the rebate...They don't care If elec costs more each month than gas..

    Bookmark   June 22, 2012 at 9:51AM
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OP is using propane which can be as expensive as electricity. And they are removing the propane.

    Bookmark   June 22, 2012 at 2:39PM
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