Rheem EcoSense

Model # ECORHE40S

Internet # 203856735

High Efficiency Power Direct Vent 38 Gal. Short 6 Year 40,000 BTU Natural Gas Water Heater

$1,820.81 /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.



Model # ECORHE40S

Internet # 203856735

Store SO SKU # 1000489083

High Efficiency 38 Gal. condensing power direct vent induced draft Natural gas water heater is a perfect choice when indoor air quality is a concern. 0.82 energy factor exceeds current ENERGY STAR requirements. Provides up to 74 Gal. of hot water in the first hour. Flexible venting options using 2 or 3 in. diameter PVC, ABS, or CPVC vent pipes. Unit can be vented with either a vertical or horizontal vent termination. Durable silicon nitride hot surface igniter eliminates the need for a standing pilot. High altitude compliant up to 9,000 ft. above sea level. 6 year tank and parts limited warranty.

  • 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
  • 38 Gal. high efficiency condensing power direct vent with induced draft provides an ample supply of hot water to meet most home owners needs
  • Natural gas unit features a eco friendly low NOx burner
  • Provides up to 74 Gal. of hot water in the first hour
  • 6 year tank and parts limited warranty
  • Energy factor of 0.82 exceeds ENERGY STAR requirements
  • Flammable vapor detection system disables the heater in the presence of flammable vapors
  • Flexible longer venting options available using 2 or 3 in. PVC, ABS or CPVC pipe
  • High altitude compliant up to 9,000 ft. above sea level
  • Dual anode rods protect the tank from corrosion
  • Requires 120-Volt power
  • 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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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Tank Valve Size (in.) 
Vent diameter (in.) 
Water Connection Size (in.) 
Application Type 
Automatic Shut-off 
Energy Factor 
Estimated Yearly Operating Cost ($) 
Finish Family 
Fuel Type 
Gas Connection Size 
Gas Type 
Natural Gas 
Maximum Temperature (F) 
Minimum Temperature (F) 
Product Weight (lb.) 
220 lb 
Recovery Rate at 90F Rise (gallons/hour) 
Tank Capacity (gallons) 
Total BTU 
40000 Btu 
Vent Type 
Single Wall 
Water Connection Location 
Water Heater Features 
LoNox,Temperature Pressure Relief Valve,Overheat Protection 
Water Heater Profile 
Warranty / Certifications
Certifications and Listings 
FVIR Certified,CSA Listed 
ENERGY STAR Certified 
Labor Warranty 
No Warranty 
Part Warranty 
6 Year 


Price: $1000 - $2000
Brand: Rheem EcoSense
Tank Capacity (gallons): 36 - 46
Water Heater Profile: Short
Review Rating: 2 & Up
Product Height (in.): 62.375
Product Width (in.): 22.125
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High Efficiency Power Direct Vent 38 Gal. Short 6 Year 40,000 BTU Natural Gas Water Heater
High Efficiency Power Direct Vent 38 Gal. Short 6 Year 40,000 BTU Natural Gas Water Heater

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What is the expected life of this water heater?

This question is from High Efficiency Power Direct Vent 38 Gal. Short 6 Year 40,000 BTU Natural Gas Water Heater
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August 14, 2015
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Rated 2.8 out of 5 by 4 reviewers.
Rated 1.0 out of 5.0 by Failure in first 24 hrs of operation The water stopped working after the first 24 hrs of use. After troubleshooting I determined that the gas solenoid valve was not getting voltage. I removed the circuit board for inspection and found the backside of the circuit board charred and burned in the area of the connection to the gas solenoid. I have spent half of my day on the phone with the tech support to get this resolved. We'll how that goes... November 29, 2015
Rated 1.0 out of 5.0 by Water Heater will Lock You Out Dont' buy a Rheem water heater. It is in a state of factory lockout AND the factory supplied, factory certified factory repairman cannot unlock it. WE had to show him out to enter the special code to get out of lockout, thanks google. But no avail. Goes back into lockout. No dagnosis in lockout mode. No diagnosis, no repair! Policy is policy for Rheem. Finally our store manager got us a new unit. May 15, 2015
Rated 5.0 out of 5.0 by Outstanding hot water tank Great experience from ordering on-line to driveway delivery. Tank was packed with great care (on a double pallet) Hook-up was easy but running the intake and exhaust lines for a new install can be a bit tricky. Great instructions that are easy to follow and understand. Heat's water quickly and the fan motor is fairly quiet (I have mine in a utility closet within living space.) I would buy this unit again as it just oozes with quality.. We have yet to stress it out running a dishwasher, washing machine, and a hot shower running at the same time. We also have this unit set to it's lowest temp setting as it can really heat up some seriously hot water on higher settings. Expensive but worth it in the end....we shall see. October 14, 2014
Rated 4.0 out of 5.0 by Hot Tamales Purchased this unit in part because most (all?) other high efficiency water heaters were too tall for my 1918 home's basement height. First delivery there was damage that I noticed after unpackaging it for the install. Took it back myself, which is a pain. Installer recommended taking the next one out of the package while delivery guy was still there- duh. Next one was mint, and installed nicely. Note, that since it is a condensing heater, you will need a sump pump (not expensive) for the drainage. I tapped into the sump on my furnace, which was convenient. It is a 38gal, and I was replacing a 50gal. No issues with capacity so far. So far, the water is hot, noise level not too bad. Been installed for 1mo, no issues. Hopefully other people will write reviews on this, as the lack of reviews made it a bit difficult to purchase. July 3, 2014
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