Search  for anything...

FOGATTI Tankless Water Heater Propane, Indoor Installation Up to 5.1 GPM, 120,000 BTU Instant Hot On demand Water Heater for Homes, Apartments and Commercial Settings, InstaGas Classic 120 Series

  • Based on 92 reviews
Condition: New
Checking for the best price...
$489.00 Why this price?
Save $89.00 was $578.00

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.


Availability: Only 2 left in stock, order soon!
Fulfilled by Amazon

Arrives Thursday, Oct 9
Order within 5 hours and 46 minutes
Available payment plans shown during checkout

Style: 5.1 GPM, 120,000 BTU


Material Type: Liquid Propane, Indoor Installation


Features

  • Endless Hot Water: FOGATTI tankless water heater propane delivers a high flow rate of 5.1GPM with 120,000 BTU heating power, providing reliable hot water for 3-4 locations simultaneously
  • Energy Efficient: Featuring a copper heat exchanger and micro-flame technology with negative pressure design, this unit reduces gas consumption and noise, saving you on energy bills while ensuring quiet operation
  • Safety & Durability: FOGATTI propane tankless water heater has been CSA certified with advanced safety features, including dry combustion protection, overheat protection, Anti-Freeze protection, flame failure protection, we offer a 2-year coverage for the entire unit and a 5-year coverage for the heat exchanger
  • Stable Temperature Control: The built-in chip adjusts heating power 1,000 times per second, maintaining water temperature within 2F for a consistently comfortable experience
  • Compact Design: Measuring 22.76 H x 14.57W x 7.0D and requires 120V AC, it saves over 50% more space compared to traditional tank heaters. you can install it in most corners of your home
  • Easy Installation:With a 3-inch OD and 3/4" NPT, the venting and piping dimensions for FOGATTI propane water heater tankless are compatible with most households. Professional installation is recommended for best performance

Brand: FOGATTI


Product Dimensions: 14.5"W x 22.75"H


Special Feature: 2 to 5 Years Warranty, CSA Certificated, Easy Indoor Installation, Endless Hot Water Supply, Stable Temperature Control See more


Color: White


Voltage: 120 Volts (AC)


Brand: ‎FOGATTI


Product Dimensions: ‎14.5"W x 22.75"H


Special Feature: ‎2 to 5 Years Warranty, CSA Certificated, Easy Indoor Installation, Endless Hot Water Supply, Stable Temperature Control


Color: ‎White


Voltage: ‎120 Volts (AC)


Maximum Temperature: ‎149 Degrees Fahrenheit


Mounting Type: ‎Wall


Is Electric: ‎No


Manufacturer: ‎FOGATTI


UPC: ‎788823283618


Item Weight: ‎30.2 pounds


Item model number: ‎HIU-FDG420IN-CS120-LP


Installation Method: ‎Contact 8772161818,


Special Features: ‎2 to 5 Years Warranty, CSA Certificated, Easy Indoor Installation, Endless Hot Water Supply, Stable Temperature Control


Usage: ‎Indoor Installation


Included Components: ‎Tankless Water Heater x 1, User's Manual x 2 (English and French Version), Quick Installation Poster x 1, Assembly Kit x 1 (Wood Screw x 4, Expansion Bolt x 2, Plastic Wall Plug x 4), Warranty Card x 1


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: June 10, 2022


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Oct 9

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • So easy to install & saving $
Style: 5.1 GPM, 120,000 BTU Material Type: Liquid Propane, Indoor Installation
The media could not be loaded. This was very easy to install, saving us lots of money & having continuous hot water is absolutely wonderful! It came fast and on time!
Reviewed in the United States on May 30, 2025 by Terese Essex Terese Essex

  • Great tankless hot water heater for the money
Style: 5.1 GPM, 120,000 BTU Material Type: Liquid Propane, Indoor Installation
I have had a Camplux tankless hot water heater for last two years. I had issues with it from day one. Called customer service and they said it was the flow of gas and I needed a new regulator. I decided to buy this hot water heater and it was easy to install and worked like it should from the start. No issue with house regulator like last unit. Very happy with this one. Puts out hot water great. ... show more
Reviewed in the United States on March 31, 2024 by Mark

  • Not dependable!
Style: 5.1 GPM, 120,000 BTU Material Type: Liquid Propane, Indoor Installation
Really wish I could give this a good review but gotta be real! I bought this unit 9 months ago and have had issues with the water staying hot since day one. The water goes cold approximately 3-5 times during a shower. I have to turn hot water valve off, wait a few minutes then turn it back on and wait for the water to warm to proceed with my shower. After a few minutes water starts getting cold and have to repeat. I have had the propane supply checked - not an issue! Since I installed the unit myself I had a plumber come check it out and all is good with installation and connections! I cannot begin to tell you how aggravating it is to have a head full of soap and have the water turn cold!!! This is very disappointing since all the research I did lead me to believe this would be a good purchase. ... show more
Reviewed in the United States on December 5, 2024 by Debels62

  • Really fast delivery. Arrived 1 week earlier than expected
Style: 4.0 GPM, 90,000 BTU Material Type: Liquid Propane, Indoor Installation
I suggest taking the time to remove the 4 screws holding the front panel- 2 on top and 2 on bottom. The fan plug was not plugged in and of course, the system wouldn't fire up until I discovered that it wasn't, and I connected it. I'm suggesting inspecting the wiring etc. inside.
Reviewed in the United States on August 19, 2023 by Barbara S.

  • I have 2
Style: 5.1 GPM, 120,000 BTU Material Type: Liquid Propane, Indoor Installation
This is the 2nd time I've purchased this for 2 different homes it works great
Reviewed in the United States on May 1, 2025 by Jezadabby

  • Never ending hot water
Style: 5.1 GPM, 120,000 BTU Material Type: Liquid Propane, Indoor Installation
I bought my house 2 years ago one of the reasons I bought it was a 100 gallon corner jet tub after installing the Fogatti I was actually able to fill it with Hot water and take a bath for the first time since I bought the house and it was AWESOME!!!. 100 Gallons of hot water no problem Woo Hoo Highly recommend ... show more
Reviewed in the United States on February 25, 2023 by Clyde

  • Warm water
Style: 4.0 GPM, 90,000 BTU Material Type: Liquid Propane, Indoor Installation
Very happy with it was easy to install keeps up with my shower even heat dose the job
Reviewed in the United States on June 3, 2024 by Gary T Nordby

  • Does not turn back on after power outage.
Style: 5.1 GPM, 120,000 BTU Material Type: Liquid Propane, Indoor Installation
The heater is good. No issues with taking a long time to start making hot water or temperature fluctuations. But when the power goes out and back on, it shuts off and you have to manually turn it back on. No good when it’s in your attic!
Reviewed in the United States on October 31, 2024 by Eric Rhodes

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...