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forum threadgabe23111 posted Today 1:02 PM

Rheem Performance Platinum 11 GPM 199000 Btu Natural Gas Tankless Water Heater $700 + fs (possibly less after rebate)

$700

Home Depot
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@Home Depot. Free shipping or store pickup where available.
YMMV but check your gas provider to see if there are any rebates available. NJNG seems to be offering a $500 rebate.
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About the Poster
@Home Depot. Free shipping or store pickup where available.
YMMV but check your gas provider to see if there are any rebates available. NJNG seems to be offering a $500 rebate.

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Today 2:48 PM
707 Comments
Joined Dec 2018
prp007Today 2:48 PM
707 Comments
Any insights about the product? I have 2x50 gallon tanked gas heaters. Can I replace both with this tankless one or I will need 2?
1
Today 3:26 PM
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Joined Jul 2009
xllbenllxToday 3:26 PM
1.4K Comments
Quote from prp007 View quoted comment :
Any insights about the product? I have 2x50 gallon tanked gas heaters. Can I replace both with this tankless one or I will need 2?
Really depends how much water you use at one time, but generally you exchange 1:1. Sounds like you've got a big house, and 1 tankless will likely be insufficient. I would get 2.
Today 6:17 PM
295 Comments
Joined Aug 2013
antaholicsToday 6:17 PM
295 Comments
Quote from prp007 View quoted comment :
Any insights about the product? I have 2x50 gallon tanked gas heaters. Can I replace both with this tankless one or I will need 2?
That's more of a throughput question... this heater can heat 11gal/min. If you use less than that at any given time, theoretically this can go forever. A typical shower is 2.1gal/min between hot and cold. If you start running multiple showers, the dishwasher, multiple washers, etc... all at once, then you might need a second one. If it's intermittent or long running (e.g. consecutive showers for 40 minutes each) then this is probably enough.

Tank water heaters heat much more slowly, but the 50x2 gallons is already hot, so you get hot water until the tanks get too cold.
Last edited by antaholics September 2, 2026 at 11:19 AM.

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