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Eccotemp FVI12-LP Liquid Propane Indoor Forced Vent Tankless Water Heater

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List Price: $329.00

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Eccotemp Systems LLC FVI12-LP Liquid Propane Indoor Forced Vent Tankless Water Heater

The FVI12-LP tankless water heater is a liquid propane fired, indoor tankless water heater designed for small to medium hot water production where you need more than one hot water application at the same time. The FVI12-LP tankless water heater is perfect for vacation cabins, cottages, and smaller homes. FVI12-LP tankless water heater comes with a horizontal stainless steel vent kit, ready to install. The powers the internal exhaust fan and digital display. It only pulls about 2 watts idol and 10 watts during operation, making it ideal when energy conservation is paramount.


  • Stainless vent kit included
  • Power ventilation for safety, efficiency and venting options
  • Tested-safe electronic ignition system
  • Digital temperature display
  • Fully independent gas and water controls
  • Precise temperature and water flow adjustment
  • Uses gas only when hot water is on
  • UL listed electrical components
  • Requires standard household 120 volt electric outlet
Show Additional Info


  • Overall: 24" H x 15" W x 4" D
  • Overall Product Weight: 33lbs

Eccotemp Systems LLC FVI12-LP Liquid Propane Indoor Forced Vent Tankless Water Heater

Additional Documents

Energy Guide

Weights & Dimensions


  • Vent Minimum Diameter: 2.5"

Additional Weights & Dimensions

  • Overall: 24" H x 15" W x 4" D
  • Overall Product Weight: 33lbs
  • Water Connection Diameter: 0.5"
  • Height to Drain Valve: 18"


Product Type: Tankless Water HeaterFinish: White
Gloss Finish: YesMaterial: Stainless Steel; Copper
Waterway Material: Metal
  • Waterway Material Details: Copper
Handle Included: No
Portable: NoNumber of Items Included: 2
Mineral Build-Up Resistant: YesRust Resistant: Yes
Circuit Breaker Panel Included: NoHose Included: No
Water Filtration: YesGarden Hose Adapter Included: No
Vacuum Breaker Included: YesIsolation Valve Included: No
Direct Vent Required: Yes
  • Direct Vent Included: Yes
Exhaust Backflow Prevention Kit Included: Yes
Venting Kit Included: YesPower Source: Liquid Propane
Installation Type: MountThermostat Included: Yes
  • Digital Temperature Display: Yes
  • Adjustable Thermostat: Yes
Maximum Flow Rate: 3.6 Gallons per Minute (GPM)Minimum Flow Rate: 0.65 Gallons per Minute (GPM)
Maximum Water Pressure in PSI: 80 PSIMinimum Water Pressure in PSI: 30 PSI
Maximum Input: 74000 BTUsEnergy Factor: 0.82 EF
Indoor Use: YesOutdoor Use: No
Altitude Rating: 3000 FeetMobile Home Approved: Yes
Phase: Single PhaseAutomatic Shutoff: Yes
Automatic Overheat Protection: YesShower Head Included: No
Commercial Use: YesCountry of Manufacture: China


Assembly Required: NoAdditional Parts Required: No


Product Warranty: 2 year 

About the Manufacturer

Eccotemp Systems, LLC is a manufacturer of energy efficient products located outside of Charleston, in Summerville, SC. Their goal is to educate consumers and trade professionals about energy savings and efficiency primarily in the form of heating water, including benefits, total investments, installation and more. Eccotemp Systems, LLC was conceptualized by Mike Elrod back in 2004. Seeing tankless and heat pump technology was the predominant method of heating water in every other part of the world, he searched out and engineered a solution for the US and Canadian markets. Until Eccotemp, the only tankless units on the market were larger, extremely expensive units. Recognizing that a whole house tankless unit could be engineered, manufactured and delivered to the end consumer for about the same net cost of a standard water heater, Eccotemp was born. Over the past years, Eccotemp has taken a realistic and practical approach to its technology - delivering a state of the art tankless unit at an affordable price point.

Eccotemp Systems LLC FVI12-LP Liquid Propane Indoor Forced Vent Tankless Water Heater


“Hi, what is the minimum pressure requirement for the eccotemp water heaters to work?” asked by Halady

"Hi Halady, this heater requires at least 30 psi and no more than 80 psi to operate." Makaylee from Wayfair


“Hi, can the heater be used with a gravity feed? ” asked by Noovshet

"Hi Noovshet, this heater unusable with a gravity feed because it requires constant pressure." Katy from Wayfair

Still have questions about this product? We're here to help

When you buy a Eccotemp FVI12-LP Liquid Propane Indoor Forced Vent Tankless Water Heater online from Wayfair, we make it as easy as possible for you to find out when your product will be delivered. You can check on a delivery estimate for the Eccotemp Part #: FVI12-LP here. If you have any questions about your purchase or any other Water Heaters product for sale our customer service representatives are available to help.Whether you just want to buy a Eccotemp FVI12-LP Liquid Propane Indoor Forced Vent Tankless Water Heater or shop for your entire home, Wayfair has a zillion things home.
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Average Overall Rating:
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Liquid Propane Tankless WH

Colette from Leander, TX– Verified Buyer

This tankless is great! I will never buy another tank water heater again. It takes virtually no space, only heats the water as you need it, and has a good warranty. Do not buy from the big box stores; Wayfair is about half the price, and it is delivered fast.

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Buyer Beware

Kevin from Lowellville, OH– Verified Buyer

This is a nice looking and somewhat easy to install unit but.....it doesn't work with todays water saving features found on pretty much everything. Faucets with aerators, washing machine, dish washer, showerhead, anything with some kind of restriction is enough to make the heater shut-off. Don't know what I'm going to do with this thing but for now it looks nice hanging on the basement wall.

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Sandra Rockwell from Oakland, Oregon

It was exactly what I needed to complete my bathroom in my shop...The quality was good and it fit into the sapce that I allotted.

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Ecco temp review

Denis from Porcupine, ON– Verified Buyer

Simple to install, availability of parts if and when required. We are usniing the item to provide hot water on deman at our cottage.Supplier accurately inform the customer of delivery time

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Eccotemp FVI12-LP works great at great price

Randy Feist from Meridian, ID

Provides hot water fast and was simple to operate! My plumber friend mounted it and connected the water lines, but it did not appear too hard.

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Our Tankless Water Heater

Linda Rochette from New Hampshire– Verified Buyer

It does supply us with enough hot water there are some issues, but think they are to do water pressure.

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Cottage application

Leon from Ottawa, ON– Verified Buyer

Works, but challenged by very cold water from our deep drilled well. Installation was expensive because the old tank was fed from the top.

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FVI12-LP Liquid Propane Indoor Forced Vent Tankless Water Heater is also sometimes listed under the following manufacturer numbers: FVI12-LP