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Eccotemp 45HI-NG Indoor 6.8 GPM Natural Gas Tankless Water Heater, White

  • Based on 239 reviews
Condition: New
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$479.00 Why this price?

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Availability: In Stock.
Fulfilled by Eccotemp

Arrives Jun 11 – Jun 16
Order within 17 hours and 36 minutes
Available payment plans shown during checkout

Style: Indoor Natural Gas


Features

  • Whole home indoor, Natural Gas powered tankless water heater, rated at 6.8 GPM that activates only when in use, making it an energy effiecient and perfrect for any home. apartment or townhome!
  • The Eccotemp 45H/HI series is CSA Certified for US and Canadian use guaranteeing a safe, easy, and enjoyable installation experience.
  • 4" Venting is required for the indoor models. Venting is available for purchase separately or you can purchase the unit and vent kit as a bundle.
  • The indoor installation will save space in your home and because it is compact and quiet, you will barely notice it is there.
  • Comes with a Temperature and Pressure Relief Valve, a Gas Shut-Off Valve and is equipped with 3/4" NPT fittings.

Brand: Eccotemp


Product Dimensions: 15"W x 24"H


Color: White


Voltage: 120 Volts


Maximum Flow Rate: 6.8 Gallons Per Minute


Brand: ‎Eccotemp


Capacity: ‎6.8 Gallons


Power Source: ‎Gas-Powered


Product Dimensions: ‎15"W x 24"H


Color: ‎White


Voltage: ‎120 Volts


Material: ‎Alloy Steel


Item Weight: ‎38 Pounds


Maximum Flow Rate: ‎6.8 Gallons Per Minute


Heat Output: ‎120 Degrees Fahrenheit


Style: ‎Indoor Natural Gas


Manufacturer: ‎Eccotemp Systems


Part Number: ‎45HI-NG


Item Weight: ‎38 pounds


Item model number: ‎45HI-NG


Is Discontinued By Manufacturer: ‎No


Size: ‎6.8 GPM


Finish: ‎Steel


Installation Method: ‎Wall-Mounted


Item Package Quantity: ‎1


Certification: ‎CSA Certified


Usage: ‎Indoor use only


Included Components: ‎1 x Hardware Pack, 1 x Instruction Manual, 1 x Gas Shut-off Valve, 1 x Temperature and Pressure Relief Valve


Batteries Included?: ‎No


Batteries Required?: ‎No


Warranty Description: ‎5 year manufacturer warranty on parts, 10 year on heat exchanger


Date First Available: May 2, 2014


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jun 11 – Jun 16

This item is non-returnable:

Non-returnable due to Hazmat safety reasons

View our full returns policy here.

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Top Amazon Reviews


  • Great tankless bang for the buck! Happy wife, happy life!
Style: Outdoor Liquid Propane
For the money, this thing is awesome. Thanks to an Amazon screw up I bought this in crunch time because they sent me a Rennai for natural gas instead of propane. Honestly this was the only propane tankless heater that would ship quickly so I bought it despite all the rotten reviews. Lo and behold I installed it in about an hour and it worked great right out of the gate. It dials up to 140 degrees and takes about 1 minute to get hot water to the nearby faucets. Water temp is every bit as hot as a standard hot water heater. With a cost difference between this and a Rennai of about $300 bucks, only time will tell but for now, I'm completely happy with nothing bad to say! ... show more
Reviewed in the United States on March 21, 2019 by Amazon Customer

  • Flow needs to be crazy high to make it run.
Style: Outdoor Liquid Propane
I got this for my 1000 sq ft house about 3 months ago. The plumbing had to installed and then the inside of the house finished. I didn't get to run or test it until about 3 weeks ago. I was excited to test it, though nervous about the Chinese made heater. At first run, it came on when we turned on the kitchen sink. It ran as advertised heating the water right to 120. Then we tried the shower and and it no longer turned on. I tried the bathroom sink and it came on, but only on nearly full power. After a few hours, the kitchen sink no longer turned on the heater. There is a flow meter inside the opening to the heater that controls when the heater is turned on. The manual with the heater states the heater will come on at .75 gallons per minute flow. I was pulling 1.4 gallons per minute out of my kitchen sink and that was not turning on the heater. I called customer service and explained the problem. The service agent said she had “just had a call about the same model” and she advised that person to replace all their fixtures for flow problem. I was told my plumbing was the culprit. I explained that it should have come on over the .75 flow minimum but she disagreed. I explained that new faucets are only allowed 1.5 gallons max and how could I obtain this flow. By that afternoon the heater was no longer even working. I had all three faucets turned on the same time and the heater did not turn on. I submitted a ticket online since they no longer answered the phone. That started two weeks of hassles. If you are not technically inclined or have to pay plumbers or electricians to install, I recommend you never buy this equipment. Here is an excerpt from their troubleshooting email. If there is no error code and the unit does not come on when the HOT water is turned on. This means that the flow meter is not sending a signal to the computer which starts the machine. 1st to fix this you want to locate the flow meter at the bottom right on the inside of your heater. The flow meter sensor will have a white, plastic piece attached to the front of it, with a set of different colored wires coming from the computer board attached to the top of it. The flow meter sensor has red black and yellow wires coming out of a black sensor that is screwed to the flow meter. 2nd check the wire connections; follow the wires to where it connects to the computer board. If both were connected you will want to remove the flow meter. Then, you will need to remove your water inlet on the outside of your heater, at the bottom right side. There is a metal clip that holds the flow meter sensor in place inside the heater. Remove this metal clip, and blow through the meter- it should make a zing sound when the little fan inside spins. Reinsert the flow meter sensor, re-attach your water inlet, and turn hot water on to see if this resolves the issue. If the display shows two squares rotating up and down. This pertains to the 45H only. 1st push the power button. 2nd If the unit has been in operation for a while and all of the sudden the squares begin rotating. This means power was lost somehow while unit was running. 3rd The flow meter wire is loose on the computer, or the connector where the two wires connect between the computer and the flow meter are loose. 4th The remote itself may have a short, or the power cord going to the computer one of the prongs may not be making a good connection threw the connector or the computer. Regardless of what the error code is; take the two front screws out of the computer board and it will slide out. Pull the inserts that are lined up along the front of that board and put them back in one by one. Plug the unit back in and see if this solves any issues. This went on for 4 emails. At one point I had to have all the plumbing removed from it and then turn it on to test. Each of these emails cost time and money. Finally they called me and asked me to connect all my plumbing to the pressure relief valve. I finally told them no way was I going to connect my plumbing to the safety devise required by law to have nothing plugging it. I was put on hold and eventually hung up on. The whole time I had been begging for a part to try to fix it. As many times as they had me take it apart, I could have tried some new part like a flow meter or circuit board. Instead they gave me a laundry list of suggestions that in no way fixed my problem. I even told them the flow meter did not make a consistent zing as reference in the email above. Finally they sent me and email telling me to remove the heater and send it in for service. If it was within the 30 days of purchase, they would do this for free. I guarantee it no one will ever fall within this 30 days with all the run around they give you with diagnostic emails. I finally called it quits. After all the time and money wasted troubleshooting this heater, I had to give up. In no way was I going to invest any more time on this heater. If all you're going to do is heat a swimming pool, this might be a good heater for you. Don't bother plumbing anything larger than ½ inch since all the piping inside the unit is 3/8 copper or smaller. ... show more
Reviewed in the United States on August 25, 2015 by Chris

  • I don't understand all the bad reviews for this tank
Style: Indoor Natural Gas
I don't understand all the bad reviews for this tank. It works perfectly for me! I have a feeling most of them are because of misunderstanding how a tankless works. The best thing to do is run hot water full blast in your shower and adjust the temp on the unit to whatever you like. Another words don't mix any cold just hot. I like the remote because you can adjust the temp right there in your bathroom, or where ever you install it. ... show more
Reviewed in the United States on June 3, 2018 by Troy

  • $500 PIECE OF JUNK, TECH SUPPORT EVEN WORSE!
Style: Outdoor Natural Gas
DO NOT BUY THIS PRODUCT ! I purchased a tankless water heater on the recommendation of several friends that are thrilled with the ones they own...APPARENTLY THIS IS NOT THE HEATER THEY HAVE! ECCOTEMP TECH SUPPORT IS EVEN WORSE THAN THEIR PRODUCT! This heater is designed for outdoor installation. After 6 months of use the cabinet has paint blistering with rust underneath. The unit has also malfunctioned from water that has leaked in from a defective gasket. After several emails to to tech support they sent me a NON WORKING circuit board, and now, will no longer respond to my emails. Telephone support is non existent, they keep you on hold for 15 minutes then a recording tells you to email tech support then disconnects you. So much for the 5 year warranty. According to information given to me by tech support, this unit is NOT suitable for NORMAL household use. The water flow required to start this heater is so great that any attempt to temper the heat by adding cold shuts the heater off. Tech support has told me that I should not be using faucets with hot/cold mixing option, I need to have separate hot and cold faucets. What? Is this 1920? Are those type faucets even made anymore? They want you to set the thermostat to your desired water temperature. EXAMPLE if you want to take a 100 degree shower, set the thermostat to 100 and get that temp water. The problem I am having is that with the thermostat set to 90 degrees I am getting 120 degree water at my shower and cannot temper it by adding cold...which shuts off the heater. Tech support stated that since I live in an area that has summer time temps that exceed 75-80 degrees, I will not be able to get water cooler than 120 degrees, so I should add another cold water line to the shower that is separate from the hot, and spray the two together to get a non scalding shower. WTF !!! Currently I have been taking COLD ONLY showers for the past 2 weeks and tech support is ignoring my pleas for help. I am about to trash this unit and go back to a traditional tank water heater. AVOID THIS PRODUCT if you live where summer temps exceed 75-80 degrees, or you have modern plumbing in your home. ... show more
Reviewed in the United States on July 13, 2016 by Tazbeaux

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