0020352625614

Rheem

Model # XG40T12DU36U0

Internet # 204318413

Store SKU # 1000035018

Store SO SKU # 1001020840

Performance Platinum 40 Gal. Tall 12 Year 36,000 BTU ENERGY STAR Ultra Low NOx Natural Gas Water Heater

$769.00 /each
  • Provides ample hot water for households with 2-4 people
  • Make sure it fits: measure your space to ensure dimensions fit
  • Same-day installation in most areas. Call 1-855-400-2552 by noon.

Frequently Bought Together

Product Overview

The Rheem Performance Platinum 40 Gal. Natural Gas Tall Water Heater comes with a 36,000 BTU/hour environmentally friendly ultra Low-NOx radiant burner that provides ample hot water for households with 2 to 4 people. The electronic ignition system eliminates the standing pilot light, saves energy and monitors system performance. Its maintenance free combustion air intake system means there are no filters to clean and replace. A premium grade anode rod provides long-lasting tank protection. Factory installed temperature and pressure relief valve and 3/4 in. water connections are included with the water heater for easy installation. The water heater is ENERGY STAR qualified. This Rheem Performance Platinum model is Wi-Fi compatible allowing for remote monitoring of the water heater's operation (Wi-Fi Module REWRA631GWH sold separately).

  • California residents: due to requirements from air quality management districts in the state of California, please use the map below to confirm whether you live in an area that requires the purchase of ultra low NOx water heaters
  • 40 Gal. tank provides ample hot water for households with 2 to 4 people
  • Natural gas water heater costs less to operate than electric models
  • Delivers 71 Gal. of hot water in the first hour
  • 12-year limited warranty on tank and parts for your convenience
  • 3-year in home labor warranty for peace of mind
  • 0.68 energy factor indicates an energy star qualified water heater
  • Maintenance free - no filter to clean or replace
  • Electronic ignition system simplifies the startup process and eliminates the need for a pilot light
  • Electronic diagnostic gas valve monitors system performance
  • Ultra low-NOx burner reduces emissions and meets California air quality management district requirements
  • Requires standard 110-Volt electrical outlet (3-prong grounded) for installation
  • Rated for installations up to 10,200 ft.
  • Designed for easy replacement of your existing water heater
  • Call 1-855-400-2552 before noon for same-day service in most areas, or Visit our Water Heater Installation page for more information.
  • Meets 2015 NAECA Standards
  • California Residents - See if your county requires water heaters that meet Air Quality Management District Ultra low NOx (ULN) requirements:

    Ultra low NOx Requirements

Info & Guides

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Specifications

Dimensions

Product Depth (in.) 
21 
Product Height (in.) 
60 
Product Width (in.) 
21 
Tank Valve Size (in.) 
.75 
Water Connection Size (in.) 
.75 

Details

Application Type 
Residential 
Energy Factor 
0.68 
Finish Family 
Gray 
Fuel Type 
Gas 
Gas Type 
Natural Gas 
Indoor/Outdoor 
Indoor 
Maximum Temperature (F) 
160 
Minimum Temperature (F) 
45 
Product Weight (lb.) 
150 lb 
Recovery Rate at 90F Rise (gallons/hour) 
36.4 
Returnable 
90-Day 
Tank Capacity (gallons) 
40 
Water Connection Location 
Top 
Water Heater Features 
Overheat Protection,Self Cleaning,Temperature Pressure Relief Valve,Ultra LoNox,WiFi 
Water Heater Profile 
Tall 

Warranty / Certifications

Certifications and Listings 
CSA Certified,FVIR Certified 
ENERGY STAR Certified 
Yes 
Labor Warranty 
3 Year 
Part Warranty 
12 Year 

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Customer Questions & Answers

15 Questions26 Answers

Customer Questions & Answers

Performance Platinum 40 Gal. Tall 12 Year 36,000 BTU ENERGY STAR Ultra Low NOx Natural Gas Water Heater
Performance Platinum 40 Gal. Tall 12 Year 36,000 BTU ENERGY STAR Ultra Low NOx Natural Gas Water Heater

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5 answers

How long is the electrical cord?

This question is from Performance Platinum 40 Gal. Tall 12 Year 36,000 BTU ENERGY STAR Ultra Low NOx Natural Gas Water Heater
Asked by
California
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May 1, 2016
It requires an electrical outlet. I will have to have an outlet installed. So, how long is the electrical cord?
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Answers (5)

Asked by
Oakland, CA
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Home Improvement Profile: DIYer
May 31, 2016
Answer: 
Just got mine. It's a generous 19 feet!
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Asked by
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May 4, 2016
Answer: 
The chord for this unit is approximately 19 feet long.
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Asked by
Moreno Valley, CA
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Home Improvement Profile: DIYer
May 2, 2016
Answer: 
The cord run from the top of the water heater. and is 19 foot long per the manual. . The manual states that a 30 foot cord is assembly is available as an accessory.
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May 2, 2016
Answer: 
The cord is an 8' electrical cord.
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Asked by
Desert springs
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May 2, 2016
Answer: 
At least ten feet. It runs down the side of the water heater - about 4 feet - then about 4 feet across the garage to a door, up over a door (door to the inside of the house from the garage), across the top of the door and then down about 3 feet to the electrical outlet (plug).
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3 answers

Is it true this unit can not be installed near a washer or dryer?

This question is from Performance Platinum 40 Gal. Tall 12 Year 36,000 BTU ENERGY STAR Ultra Low NOx Natural Gas Water Heater
Asked by
California
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October 19, 2015
I was told this unit could not be installed within 10 feet of a washer or dryer.
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Answers (3)

Asked by
Moreno Valley, CA
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Home Improvement Profile: DIYer
May 2, 2016
Answer: 
I installed mine at the location of my old water heater which is within a few feet of were the
washer and dryer are located. If your old water heater is located in an area closer to your
washer and dryer I find nothing the manual that states not to install it within 10 feet of your
washer and dryer.
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Asked by
Bakersfield, CA
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March 5, 2016
Answer: 
I am told by Rheem tech support that the fv sensor may trigger and shut off the gas if certain chemicals used in cleaning solutions are detected. If you use something in your wash that you have not used before and the gas shuts off then call Rheem and get their reset procedure. If that does not work then the fv sensor may have become saturated and needs to be replaced. Avoid using organic cleaning fluids Read More
I am told by Rheem tech support that the fv sensor may trigger and shut off the gas if certain chemicals used in cleaning solutions are detected. If you use something in your wash that you have not used before and the gas shuts off then call Rheem and get their reset procedure. If that does not work then the fv sensor may have become saturated and needs to be replaced. Avoid using organic cleaning fluids near the water heater. If you have used your machine in close proximity and have not had a problem and do not intend to change the chemicals you use then you should be ok. Read Less
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Asked by
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January 13, 2016
Answer: 
No, that is not true. The only concerns would be that there is adequate airflow into the room where the water heater and dryer would be. If the air flow into the room is marginal and the dryer is on it may starve the water heater for fresh air and put the pilot out.
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3 answers

Picture shows no Dielectic valve used, Brass to Galvanized Steel SharkBite. Wont that corrode due to electrolytic process, dissimilar metals?

This question is from Performance Platinum 40 Gal. Tall 12 Year 36,000 BTU ENERGY STAR Ultra Low NOx Natural Gas Water Heater
Asked by
Anonymous
North Canton
July 15, 2015
Picture shows no Dielectic valve used, Brass to Galvanized Steel SharkBite. Wont that corrode due to electrolytic process, dissimilar metals?
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Asked by
North Hollywood
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Home Improvement Profile: DIYer
March 16, 2016
Answer: 
The "shark bite" referenced in the question refers (incorrectly, as the pictured connection stainless steel connection hose has a brass female 3/4 fitting attached to galvanized nipple coming from the water heater) to a name brand type of threadless connector used primarily on pex hose, but does have threaded applications. Oftentimes a brass fitting is used to transition from copper to galvanized Read More
The "shark bite" referenced in the question refers (incorrectly, as the pictured connection stainless steel connection hose has a brass female 3/4 fitting attached to galvanized nipple coming from the water heater) to a name brand type of threadless connector used primarily on pex hose, but does have threaded applications. Oftentimes a brass fitting is used to transition from copper to galvanized threaded pipe to lessen dielectric issues. Read Less
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Asked by
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December 14, 2015
Answer: 
We are unclear about what “Brass to Galvanized Steel SharkBite” you are talking about.
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Asked by
Moreno Valley, CA
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July 30, 2015
Answer: 
If you put two metals together in water, one of them corrodes to protect the other. This is known as electrolysis. The action of a sacrificial anode rod, and that of a battery, are both examples of beneficial electrolysis. However, usually in plumbing, electrolysis is something you want to avoid, especially in connections, since it means that the corroding part is eventually going to leak.
To prevent Read More
If you put two metals together in water, one of them corrodes to protect the other. This is known as electrolysis. The action of a sacrificial anode rod, and that of a battery, are both examples of beneficial electrolysis. However, usually in plumbing, electrolysis is something you want to avoid, especially in connections, since it means that the corroding part is eventually going to leak.
To prevent plumbing electrolysis, dielectric connections are used to separate dissimilar metals. The photo show the water heater the way you receive it at time of purchase.
One ways to do that. is by using 3/4-inch copper flex line. These are fairly commonly used on residential water heaters. Or one can use stainless steel flex lines which I prefer to use. Read Less
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2 answers

can unit be vented through wall of home with pvc pipe ?

This question is from Performance Platinum 40 Gal. Tall 12 Year 36,000 BTU ENERGY STAR Ultra Low NOx Natural Gas Water Heater
Asked by
PA
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May 11, 2016
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Asked by
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May 18, 2016
Answer: 
It depends on local codes and requirements.
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May 12, 2016
Answer: 
Hi Rich,
The building code requires double wall metal pipe for the vent system.
Mike
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Customer Reviews

Rated 4.1 out of 5 by 92 reviewers.
Rated 5.0 out of 5.0 by So far very good We went with a 40 gal. instead of a 50 like we had because your kids are moved out so it's only the two of us. I changed the two before this one. The swap was the same as any gas heater, disconect, remove, install, reconnect, and check for leaks. This is the easy part. Fill, turn the "off- on" switch to on, and set the tempature. Your Done! This hot water heater doesn't have a pilot light, it turns the heater on when needed, electronicily. The flue is also openned and closed to save heat, should be econnomical. Only time will tell. Should qualify for $100 rebate, if there is any money left in fund. May 10, 2016
Rated 4.0 out of 5.0 by Great product-Just a few things to know This water heater itself is great but it is important to note that although it is a gas water heater it also needs electricity. Our plumber told us the electricity is needed for the water to be circulated, which makes the heater more efficient. Also, we found that although this is a 40 gallon heater, it was too big to fit into our 40 gallon metal shed. We had to get a bigger shed. May 25, 2016
Rated 1.0 out of 5.0 by Don't get this unit The tank requires power for the heat vent, one extra unnecessary component to depend on, especially when you are out of powe. June 8, 2016
Rated 1.0 out of 5.0 by Problems and NO help from Rheem We figured out the issues but know you will get no help from Rheem. These units have a vapor sensor on them. Once the vapor sensor is triggered then you have to reset it. Now that's hard because Rheem tells you to have the unit serviced. This unit is in a weekend house 2 hours from where I live. So the thought of waiting 1/2 a day for a service guy was not a good thought. I found the reset instructions on line (Amazon reviews) and did a reset, and that saved a service. The reset is a re-boot and then turn the unit on with the temp on hi and turn the knob from high to low 7 times (within 30 seconds) and you will hear it click. We only had no hot water for a day or two on a weekend before I found that on an Amazon review. THEN the device triggered again...BTW we have no fumes but the space was repainted two months ago, and maybe that triggered the sensor. This second time the unit would not reset. So after reading about the sensor and learning it has to have a ohm reading between 4k - 70k, I found a ref on-line to a real fix. Remove the sensor and insert a 25 cent 1/4 watt resistor from Radio Shack between the two wires that went to the sensor. It WORKED!! I wrote Rheem no-customer service on 6/10 asking for a new sensor to be sent but so far I only have an acknowledgement letter that they got my letter...SO 10 days later I COULD be without hot water for the past 10 days. I called HD and they said since it was past a 30 day purchase i had to keep the unit. Installing the unit was a nightmare because the space was limited and removing the unit to take it back would have been equally a nightmare. SO the lesson here is to search the internet and defeat the safety devices which don't work and don't worry because the manufacturer is not worried either. I suggested in my letter to Rheem if they were to send me a new sensor I would return my old one. BTW they sell replacement sensors on Amazon so they must be really buggy. Also I purchased the Rheem EcoNet internet devices so I could adjust the unit remotely. I guess you can IF you only want to adjust the water temp. It never tells you if there is an issue, nor does it confirm anything SO if the unit won't start it never alerts you..you just change the water temp and hope that the unit is working and that it will actually adjust it. Hard to believe they would develop an app and have it do SO little. The app does lead you to believe it does all kinds of things..it does not. I now hope that the unit will function properly and heat water without issues. June 20, 2016
Rated 5.0 out of 5.0 by Working Because this new model has an ignition instead of a pilot light, it stuck out more in front. The heater had to to pivoted sideways to fit into the closet that the previous heater was in. All the metal tubing for the input cold water and output hot water had to be adjusted for this rotation. NONE of the measurements given accounted for the ignition system taking more space. Fortunately I spotted this before the heater was entirely installed and the workmen left. But the water had to be drainied and new tubing and plumbling bought to complete the installation. Hope it lasts longer than the warranty. April 10, 2016
Rated 4.0 out of 5.0 by Great buy on a slow mover discounted product Installation was very straightforward. Powered damper and non pilot ignition system require 110 plug in within 18 feet. Purchased a floor demo for almost half off, but did not realize the ignitor wire had been pulled out. Once installed, would not fire up and showed LED error code of ignition problem. Called Rheem and explained problem. They overnighted a new ignition assembly and installation took about 25 minutes. Heater fired up and providing ample hot water. An energy saver as no pilot and dampered exhaust to retain heat around core of tank when burner is not active. Very quiet too. Rheem has stood behind their product admirably. March 15, 2016
Rated 1.0 out of 5.0 by Not high quality I bought this unit 4 months ago and the unit has failed twice in the past 3 weeks. I call technical support and they say to call the gas company to check the gas pressure, which the gas company has since said there was no problem with the pressure. I call support back and they say to clean this or do this and do that, with every day that passes no hot water. Finally I asked for them to give me a number to have a technician to come out and look which I have to schedule. If the unit was working fine for a few months and now failing intermittently there must be a bad part. Day 3 no hot water. I would return the unit if I could and I wish I would have read the customer reviews prior to purchasing, I recommend buying a different product if you have the option. March 9, 2016
Rated 4.0 out of 5.0 by Rheem 40 gal tall water heater, Good value with Rebate Easy to put in, a little bigger then last one, Had to make a bigger cabinet to hold it. March 29, 2016
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