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Eccotemp Forced Vent Indoor Tankless Water Heater

Today: $274.99
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ITEM# 12537852

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ITEM#: 12537852

Enjoy a warm shower every day with this tankless water heater from Eccotemp. This energy-efficient water heater only uses gas when the hot water is turned on, saving you money and time. A digital temperature display makes it simple to control your water, and the heater's space-saving design makes it easy to install in a cabin, cottage or small home.
  • Eccotemp FVI-12 is an indoor high efficiency, tankless water heating system
  • Water heater is perfect for vacation cabins, cottages and smaller homes
  • Green and efficient, the FVI-12 only uses energy when you turn on the hot water
  • Otherwise the FVI-12 uses no gas or electricity
  • Water heater is designed for small to medium hot water production where you need more than one hot water application at the same time
  • Sleek modern design
  • Delivers three (3) gallons per minute of piping hot water
  • Power ventilation for safety, efficiency and venting options
  • Tested-safe electronic ignition system
  • 74,000 BTU
  • Digital temperature display
  • Fully independent gas and water controls
  • Precise temperature and water flow adjustment
  • Weighs only 20 pounds
  • Measures 15 inches wide x 24 inches high x 4 inches thick
  • Includes 2-inch stainless steel horizontal vent kit
  • Uses gas only when hot water is on
  • Requires standard household 120-volt electric outlet
  • UL-listed cord
  • Liquid propane-powered


Material Plastic
Fuel Type Propane
Product Features Variable Temperature Control
Dimensions 24.0x15.0x4.0
Warranty 2 year Manufacturer
Model Number FVI-12
Country of Origin China

Customer Reviews

5 Stars
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  • Most Helpful

  • A product that works as advertised!

    I bought this product to replace a conventional hot water heater. I live in an off-grid cabin and had to wait for at least an hour each time I wanted to use hot water. (Power and gas turned off every evening.) With this on-demand water heater, it takes about 90 seconds to get usable hot water. What a difference! The only hitch I had was the need to increase my well's water pressure just a little bit. But, I consider this a minor adustment that reaps great rewards.

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  • eccotemp

    This is the second one I have purchased. My first one is designed for outside service. We have it mounted outside our cabin and enjoy it very much. The second one is inside the cabin. I was a plumber for over 20 years and I feel that this is a great buy and have had no problems!

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  • Works Well

    I install this unit at camp and use A 12 volt pump that pumps 2.5 gpm power the heater with A inverter or my generator of 2000 WATS, and have endless hot water. good deal with vent kit included .Been using it for 2 mo.

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  • Most Recent

  • good for back up

    The unit seems very well built and was easy to install. However, temperature control/maintenance is quite variable. I've used it for a year now with no major failures. I will replace it with a storage heater but keep it in place as a back up. The fuel consumption is very efficient.

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  • Easy installation,

    Great for saving money compared to electric hot water heater.

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  • Good so far!!

    Have had the eccotemp tankless installed for two weeks now. Some adjustment is required if your water flow is not high enough-not a major problem but one you want to make sure you have a good water flow from your well. City folks probably wont have this issue. Awesome to not have a propane pilot light or having to keep an entire tank of water hot. Should save us enough money to pay for itself by winter!!

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  • Not worth it

    I got this because it had good reviews and I figured if it actually worked it would be worth the hassle of trying to change the water pies and such to put it in. It does heat up the water, but only for a few seconds. Not even long enough to run a sink full of dishwater. Maybe a gallon at a time. And forget trying to take a bath or shower. This is totally useless and a complete waste of money. If I could I would return it and get my money back. Needless to say I will be replacing this soon.

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  • so far so good

    Seems to be a well built unit. I installed it less than a month ago and so far so good. Be aware that the required flow rate is .9 gal per min, if you have a low flow nozzle on your sink it will not trigger the unit to fire up. Still making adjustments, but satisfied with the unit. The price was right.

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Questions & Answers

  • Does this FVI-12LP come with the vent kit and do you have one in stock?

    • Hello Bob, unfortunately this item is out of stock. We currently do not have inventory to check, and cannot guarantee the item will be restocked. Thank you for shopping with us.

  • what is the eccotemp forced vent indoor tankless water heater efficiency. I cannot find this in manual? 80% 90% or 50%?

    • Hello Volodymyr B., the Energy efficiency is 79 percent. Thank you for shoppign with us.

  • Why did you choose this product?

    • Ecotemp Forced Vent Indoor Tankless Water Heater PROPANE

    • Price and size

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  • do you have a kit to hook the heater to the houses plumbing pipes

    • Hello george, you will need to visit your local hardware store after the unit arrives to get the connections to hook this up. Professional installation is recommended. Thank you for shopping with us. Rochelle B

  • how much space is required for this unit. My hot water closet is 21" x 25" x 8' tall, is that enough?

    • Hello lottoladytx, thank you for your inquiry! This unit requires a 2 inch clearance from a wall, 1 foot side to side from anything flammble, 3 foot from a window as well from an overhang, and 18 inches from the ground. I hope this helps. Happy shopping!

  • will a 12v water pump supply enough pressure?

    • Thank you poppa65 for the opportunity to help you with the Eccotemp Forced Vent Indoor Tankless Water Heater. The system does not require the use of a water pump unless you have a private water delivery system and needs to be pumped out and through the lines then the 12v pump is very sufficient. Thank you for shopping with us.

  • can this uit run elestric without venting

    • Hello dbeaverson17! This water heater has received excellent reviews! The FVI-12 Tankless water heater must be vented. Venting ensures all emissions are safely passing outside as they should be. Not installation the venting would be a form of improper installation and would automatically void the warranty for this product. I hope this helps. Thanks for shopping with us.

  • Can this unit be mounted outside?

  • Can this heater be operated with a portable propane tank? What's the smallest size tank that will work?

    • This water heater is designed to run from a gas pipeline; if you can use a propane tank safely with a similar output to a gas pipeline (correct pressure, connections, etc.) then any size should work fine. Be sure to check thoroughly for safety.

  • can it be run off natural gas?

    • With the correct regulator it should be OK.

  • Is all the venting pipe included?

  • How hot (what temperature) can the vent exhaust tube and plates get? Thanks for the info

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