Eccotemp 6.3 GPM Natural Gas Outdoor Tankless Water Heater

by Eccotemp
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ITEM# 11572380
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ITEM#: 11572380

  • Eccotemp natural gas outdoor, tankless water heater saves 20-40-percent off your gas bill
  • Maximum BTU 137,500 BTU's, minimum BTU 19,000
  • Energy factor of 0.80, recovery factor 0.84
  • Antifreeze circuit good to -30 degrees F
  • Temperature range from 90-140 degrees F
  • Internal pressure relief valve
  • GFI cord
  • Remote
  • Electronic ignition
  • Forced vent
  • 120 volt plug-in
  • 0.75-inch gas inlet
  • 0.5-inch water inlet/outlet
  • Measurements: 28 inches high x 14 inches wide x 8 inches deep

According to Federal Law Magnuson-Moss Warranty Act (P.L. 93-637) All Appliance manufacturers must be given the opportunity to attempt to repair any of their appliances before it can be returned or exchanged. For more information please click here.


Material Plastic
Dimensions 28H x 14W x 8Deep
Warranty 10 year Limited Manufacturer
Model Number 40H-NG
Country of Origin China

Quality Rating

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Features for Rugs

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Customer Reviews

5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
  • Most Recent

  • Don't do it...
    Verified Purchase

    This unit is NOT suitable for outdoor use. The first time the temp dipped below 35 deg. (not even freezing), its pipes burst, water spewing everywhere. Thought I was saving money by buying it. But, as often happens in those cases, I ended up paying for this one plus the new one that is actually made for outdoor use (i.e., the Rinnai RL94eN) to replace this after it failed. Have had the Rinnai a couple years now and I love it. Even had an unusually cold < 28 deg/14-day span and it breezed through just fine. Now, the piece-of-s*** Eccotemp is cluttering up space in my garage until I figure out how to dispose of it.

    Read More
    Anne T. Jan 26, 2016
  • Freezes - Even if your pipes don't
    Verified Purchase

    Can't send replacement unit, even after we've insulated the pipes. The water INSIDE the unit froze (not the water inside or outside) and manufacturer won't replace. Nobody supporting warranty.

    Read More
    Justin F. Dec 14, 2015
  • Eccotemp 6.3 GPM Natural Gas Outdoor Tankless Wate
    Verified Purchase

    Never was installed and we moved so it was donated to Habitat for Humanity.

    Read More
    westtexaspeg Sep 9, 2015
  • Homeowner
    Verified Purchase

    We have had nothing but trouble from this water heater. I can't recommend it to anyone. Far too many repair issues.

    Read More
    munimulasan Jul 14, 2015
  • Overstock Rocks!
    Verified Purchase

    Very happy with overstocks exchange of the damaged initial package due to shipping. Sent us the new product before we even returned the old one, great service.

    Read More
    c4eppinger Jul 11, 2012
  • Most Helpful


    This heater works great in my 3 bedroom 2 and 1/2 Bath home. Water gets hot fast and stays hot forever if you want it to. Also, this company has by far the BEST customer service I have every experienced - and I am in the construction industry. Have no fear - buy this on-demand heater. You will not regret it!

    Read More
    jssloan Jan 17, 2009
  • Compare to Rinnai
    Verified Purchase

    I installed this in an in-law house behind my main house, which has a professionally installed Rinnai. This unit is comparable, though seems to have a slightly longer delay in delivering hot water. There is 8-feet between this unit and my bathroom, takes about 30-seconds to deliver hot water. NOTE ON INSTALLATION: this unit has a gas flow of 135K Btu. The 48-inch flex lines available at big-box home stores are not rated for this flow. You will need to hard-pipe 3/4-inch iron pipe or find a shorter length of flex that is rated for this gas flow. Also, unit does not include 3-way by-pass valves typically installed on tankless water heaters to allow the coils to be acid washed. Look for Webstone 3/4" Pipe Thread (unit does include adapters from 1/2-inch to 3/4-inch pipe thread). I have had some issues with the controller turning off, not sure if it's a problem with the unit, or poor power on my end. Overall, happy with this unit - it's a good buy.

    Read More
    stpeteflorida Mar 30, 2012
  • great
    Verified Purchase

    received this after paying around half the cost of other brands and hooked it up works great!!!

    Read More
    rantodd Apr 28, 2010
  • Great Little heater
    Verified Purchase

    We bought this after reading the reviews . We have a 2100 sq ft house, one level with two baths and laundry room...and of course a kitchen :) We thought that we would try it even though we thought we might still need a point of service unit later on our far bathroom. The Unit came and we were amazed how compact it is, even with the description. Installation was a little more work because our house is 70 years old and we needed new fittings, but we got it properly installed, When we turned it on and set the temperature, we ran all the taps in the house, and ALL OF THEM HAD SUSTAINED HOT WATER! We may still put in a point of use later someday, but right now we are thrilled. And we love that it did not cost $1100.00....

    Read More
    allypage Apr 10, 2012
  • Great price on a great water tank
    Verified Purchase

    This water heater was everything we expected it to be. We are very happy with it and it will be nice not to have to worry about running out of hot water again!

    Read More
    dar48 Feb 28, 2012

Questions & Answers

  • Q:

    "Can this unit be used to heat a 500 gallon outdoor hot tub?"

    • A:

      Thank you for the question. This is not the intended purpose of a water heater sorry. This is for hot water consumption that a home would use.

  • Q:

    "Can this be converted for LP ?"

    • A:

      Thank you for contacting us,unfortunately no, the natural gas units cannot be converted to liquid propane, or the other way around. Please let me know if you have any further question.

  • Q:

    "can you install inside?"

    • A:

      Thank you for your interest. No, this unit is made to install outdoors, only. Please feel free to contact us again with any further questions.

  • Q:

    "I live in Grand Junction, Co.... would this model be safe from freezing in this very cold climate? Also, can you give me specs on the exhaust venting for this unit?"

    • A:

      Outdoor model number 40H-NG has an antifreeze protection circuit installed on the unit. This circuit will protect the units from freezing in temperatures as low as -30 degrees Fahrenheit. You will have to check with the manufacturer for further information regarding the exhaust venting.

  • Q:

    "Does this outdoor model have antifreeze circuit installed?"

    • A:

      No, this does not have an antifreeze circuit installed. It doesn''t store water. It heats the water as needed.

  • Q:

    "can you install this outdoors for an outdoor shower?"

    • A:

      Yes, you can use that unit for an outdoor shower.

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Our standard shipping method is ground shipping. We also offer expedited shipping for most items. Your final shipping cost and estimated delivery timeframe will be available at checkout.
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Items must be returned in new or unused condition and contain all original materials included with the shipment. More Details

FINAL SALE EXCLUSION: Items marked as FINAL SALE are not returnable unless the problem you experience is the result of our error.

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** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.