Eccotemp FVI12 Indoor 4.0 GPM Natural Gas Tankless Water Heater
Eccotemp FVI12 Indoor 4.0 GPM Natural Gas Tankless Water Heater
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Eccotemp FVI12 Indoor 4.0 GPM Natural Gas Tankless Water Heater

2.9 stars out of 7 reviews
(2.9)|
7 ratings
Eccotemp FVI12 Indoor 4.0 GPM Natural Gas Tankless Water HeaterEccotemp FVI12 Indoor 4 0 GPM Natural Gas Tankless Water HeaterEccotemp Liquid Propane Water Heater for Indoor 40 GPM Capacity with Accessories 6 Piece Pack
Size:4"L x 17"W x 11"H-Out of stock

Key item features

  • Simultaneous Use: Rated for 1-2 applications used simultaneously, making it easy to take a shower and run a sink at the same time.
  • Ideal Applications: Perfect for smaller residential single-family homes, condos, cabins, or apartments.
  • High Efficiency: Rated at 4.0 GPM at 80,000 BTUs with a temperature rise of 38 degrees, suitable for most single-family homes.
  • Included Components: Comes with a gas appliance shut off valve, mounting hardware, wall thimble, 18 straight pipe, and installation manual.
  • Maintenance Recommendation: Clean every six months with Eccotemp's EZ-FLUSH Descaling Kit to ensure longevity.
  • Advanced Technology: Features 0.7 GPM low flow ignition technology for endless hot water without cold spots.
  • Manual Controls: Temperature can be set and regulated at the front control panel.
  • Elevation Limitations: Tested for use at elevations up to 2000 feet; not recommended for use above 5000 feet.
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2.9 out of 5 stars
stars7 ratings6 reviews
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Showing 1-3 of 6 reviews

Jul 1, 2025
anonymous
Item details
Size: Liquid Propane
5 out of 5 stars review

Verified Purchase

Great product. Great customer service.

Helpful?1VY9H550OUZ849317403
Oct 4, 2017
Walmart customer
5 out of 5 stars review

Alaska Application

I couldn't be happier. I was told that a tank-less water heater would never work in Alaska because of the temp of the water coming out of the well. Our water comes out at approx. 42 degrees. And at full temp and full gas it will heat the water to 177 degrees and trigger the unit to shutoff because of the water being too hot. So we set the gas at about 1/3 to 1/2 and the water is heated to ~140 degrees which is plenty hot. Am ordering 3 more for our other cabins. Nothing better than a endless hot shower.

Helpful?1VY9H550OUZ849317403
Apr 15, 2020
Gabriel
2 out of 5 stars review

temp inconsistent

I dont like this water heater because you cant adjust at shower head, resulting in water thats too cold or scalding hot! temp is not consistant, slowly gets hotter as you shower. I guess you get what you paid for.

Helpful?1VY9H550OUZ849317403
reply from Supplier Response

Hello Gabriel. The Eccotemp FVI12 temperature regulation is manually controlled, meaning that it always uses the exact amount of gas and reduces water flow by the amount the knobs are set to. Because it operates in this manner, a faucet with low water flow will run at a higher temperate than one with a higher volume of water flow. The Eccotemp FVI12 cannot be set to maintain an exact temperature regardless of which fixture you use. If your water flow varies between fixtures, or if it is changed while the water heater is in operation, the temperature will change accordingly. For more information, please reach out to our technical support team via live chat, setting up a call, or creating a support ticket at support.eccotemp.com. We will be waiting and are always happy to help!