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8.4 GPM Natural Gas High Efficiency Indoor Tankless Gas Water Heater
  • Rheem
  • Model ECOH160DVLN-1
  • Internet #206934529
  • Store SO SKU #

8.4 GPM Natural Gas High Efficiency Indoor Tankless Gas Water Heater

$1,201.33 /each
Discontinued Model:

Model # ECOH160DVLN

Internet #203404940

Store SO SKU #1000067450

Rheem EcoSense 8.4 GPM Natural Gas High Efficiency Indoor Tankless Gas Water Heater
0020352612249

Discontinued Rheem EcoSense

8.4 GPM Natural Gas High Efficiency Indoor Tankless Gas Water Heater

  • Easy to use intelligent electronic controls and sensors
  • No standing pilot means less wasted energy
  • Same-day installation in most areas. Call 1-855-400-2552 by noon.

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Product Overview

The Rheem EcoSense ECOH160DVLN 8.4 GPM, 157,000 BTU Natural Gas Condensing Tankless Water Heater is designed to supply continuous hot water for up to 2 to 3 bathrooms at the same time. It heats water only when it's needed and features a 0.92 energy factor. This compact heater exceeds the requirements for many utility rebate programs and also qualifies for the ENERGY STAR program. It comes with a remote digital thermostat that can be installed in almost any convenient area of the house. This heater's direct-vent design utilizes schedule 40 PVC for a flexible, low-cost venting installation. This model can be used at elevations up to 9,840 ft. above sea level. Please click the "Specifications" to view the Rheem Brochure Guide which will help you in your buying decision to ensure that you purchase the right tankless water heater model for your household needs.

  • Schedule 40 PVC for easier venting installation
  • A 8.4 GPM tankless water heater at a 35 Degree temperature rise can provide enough hot water to supply a 2 to 3 bathroom home
  • Tankless gas water heaters heat water on demand, saving energy compared to many standard gas tank-type water heaters
  • 12-year limited warranty on heat exchanger and 5-year limited warranty on parts
  • 0.92 energy factor meets or exceeds minimum energy efficiency standards
  • Remote digital display shows precise temperature setting and maintenance codes
  • ENERGY STAR qualified to meet or exceed federal guidelines for energy efficiency
  • Ability to link 2 like units together for high demand applications with the EZ-link cable (sold separately)
  • Horizontal 3 in. vent termination kit SP20286 included with unit
  • Up to 94% efficient - lowest operating cost
  • Click here to check out our buying guide on water heaters
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Price
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Name Natural Gas 9.0 GPM High EF Indoor Tankless Water Heater with Water Savings Setting and 12-Year Warranty 8.4 GPM Natural Gas High Efficiency Indoor Tankless Gas Water Heater 8.4 GPM Natural Gas High Efficiency Indoor Tankless Gas Water Heater 9.5 GPM Natural Gas High Efficiency Indoor Tankless Gas Water Heater
Brand Rheem Rheem EcoSense Rheem Rheem
Ratings (6) (53) (4) (42)
Flow Rate @ 45 F Rise (gallons/min) 7.5 6.6 6.6 8.4
Gas Type Natural Gas Natural Gas Natural Gas Natural Gas
Indoor/Outdoor Indoor Indoor Indoor Indoor
Eco Options Yes Yes Yes Yes
Total BTU 180000 Btu 157000 Btu 157000 Btu 199900 Btu
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Customer Questions & Answers

Will I need electricity (115 Volt A/C) in my water heater closet with this tankless unit ??

I currently have no electricity going into my water heater closet. Will this need to be installed before I can install a tank-less water heater unit??
Asked by: Raymond
Yes
Answered by: Rheem
Date published: 2016-06-14

Can this water heater be vented vertically through an attic and terminated outside of the roof?

Asked by: Ram
There has to be some way to allow condensed water to drip from the air intake before it enters the unit. The instructions specify horizontal intake / exhaust lines for that reason.
Answered by: JB
Date published: 2016-04-30

I would like to install a tankless and get rid of my 50 gal water heater but I'm worried about the venting. Can I use the existing vent?

Asked by: GWB
No, you will have to install a new exhaust and intake vent.
Answered by: Dave
Date published: 2016-07-09

What is the exact electric power requirement ( voltage and amperage ) for this unit ? The unit is ECOH160DVLN

Asked by: jvd725
Standard 110 v. current. Mine just plugs in and goes.
Answered by: JB
Date published: 2016-06-14
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Customer Reviews

8.4 GPM Natural Gas High Efficiency Indoor Tankless Gas Water Heater is rated 4.5 out of 5 by 53.
Rated 4 out of 5 by from Good Product Be aware that it could be noisy when the burner is on. It will depend on where it is installed. In my case it was installed on an interior wall and could hear the burner running when the hot water is turned on in the adjacent room. Also, disregard what Home Depot people online or in the store tells you that it will work with 1/2" gas supply line. I was told the heater will work though less efficient. Not true, water heater will go off with error message. I had to run a dedicated 3/4" gas line from the meter for it to work. Be aware this is a condensating water heater....so you will need to collect the condensate or have a place for it to drain.
Date published: 2015-04-14
Rated 5 out of 5 by from I am in hot water now. I am in hot water now. I decided to install the 8.5 gallon per minute high efficiency unit. After I determined our hot water needs. This is the smaller of the 2 tankless high efficiency units Rheem offers. The unit works beautifully and supplies endless hot water. We have tested the unit running our Jacuzzi tub, shower and washing machine as well as other fixtures at the same time and we have plenty of hot water. We replaced a 75 gallon direct vent tank system which could not deliver the demand we have tested. If this is a DIY project you need to know a few things first off. Because this unit is not comparable to the installation of a standard tank hot water heater you may be replacing. Your old tank is sized for your current natural gas and water supply system. I can almost promise, your systems will have to be upgraded to install this tankless unit. Specifically your gas supply. You may decide to hire a professional. If this a for new construction or a major remodel. I think it is a no brainer verse the old tank systems. 27 percent more efficient and that efficiency remains pretty constant verse a tank. Tanks lose efficiency continuously as they get older. Ok for the DIY. First download the installation manual available on the HD page, under specifications. Read it. If you have questions call Rheem tech support. They are very helpful and avail 7 days a week. I called them before I decided to buy and again during installation. They are very helpful. Now you have to find out what your gas supply is currently. Most standard hot water heater use a 1/2 inch supply line and burn around say 50,000 btus plus or minus. This tankless unit uses a max of 157,000 btus. 3 time the peek demand. The unit will require a 3/4 inch gas supply. You will also have to calculate your whole house gas demand and check the size of your gas meter and main gas supply line coming off the meter. This is really just some basic math. So determine how much gas all the other appliances demand at peek use and add those numbers up to get your demand number? Then find out how much your meter can supply. You will also have to know your gas supply delivery pressure. Call your gas supplier because they can help you. Then check your gas supply line. You need to run a 3/4 line to the unit. The closer the unit to the meter the better. In my installation I had a 1 inch line running off the meter. The engineer at my gas coop suggested I run a 1 inch line to the unit then drop down to the 3/4 to maintain gas pressure at peek demand. I had to upgrade to the 3/4 line any way so this was just a little more planning, not a big deal. Now you may have to get a permit to alter your gas line? Check with your local building department. My meter was rated at 350,000 btus so it was a good fit. If I had had to change the meter it would have been no cost to me because our coop is responsible for the delivery as they say. Your case might not be the same so this is a good question to ask? By the way I am a certified gas system installer, retired. So I have a lot of experience. This might be something you want hire a professional to do? The water line also needs to be 3/4, which you most likely already have. You need to check your water pressure. You need between 40 PSI and a max of 90 PSI. You might have to install a pressure regulator or an expansion tank. If your PSI is above 80 you already need one or the other. Then if you have a water softener or whole house water filtration system you will need to know the gallons per minute the system delivers. Some water softness only deliver 6.5 GPM? Your tankless unit is rated at 8.5. So if you don’t have the supply you won’t get the max benefit from the system. That doesn't mean you can’t install the tankless unit, it means you won’t get 8.5 gallons per minute. My whole house water filtration system is rated at 10.5 GPM. Again call Rheem and discuss this? The tankless systems work on a modulation demand cycle. So if you use the kitchen sink that flows at 1.5 GPM that is what the tankless delivers. The minimum flow is .04 GPM to cycle the tankless system. The numbers I am using are at maximum demands which you have to calculate for. You will also need a drain for the pressure relief valve drain and the condensation drain. The High efficiency unit produces a lot of condensation. You need to figure all this out before you start. If you do you will have a great experience. This is a long term relationship between you and your hot water system, so it is worth the effort. Venting, the system uses PVC schedule 40. 2 or 3 inch. 3 inch is recommended. 3 inch will allow you to use longer pipe runs. The unit can vent vertical or horizontally. BEWARE you CANNOT use schedule 40 foam core pipe. It has to be standard schedule 40. This will be printed on the PVC pipe. Foam core will say non pressure rated or should. Make sure. This unit comes with the horizontal vent termination kit. Which saves you $50. It also come with a gas shut off valve for the unit and a pressure relief valve another 30 bucks saved. I recommend you buy the Rheem valve installation kit. This kit has a by pass valve system that makes descaling your unit easy. It also simplifies the unit installation. The valves have the unions and a port opening for the pressure relief valve and a spare pressure relief valve is also included. You will also need an electrical outlet. The unit requires power. The unit also comes with the greatest feature. A digital temperature control. You can set the water temp to your desired temperature. Not low medium or high, but the exact temperature you want. The biggest complaint I read about the tankless system is they need to be descaled at least once a year or maybe more depending on your water quality. This really isn’t a big deal. It is like descaling your coffee pot only a little scaled up. The Rheem valves have a by pass valve that makes this simple. To descale you will need a small submersible pump, water connection lines, like for a washing machine. A 5 gal bucket and 3 gallons of vinegar. Just hook up to the valves and let the system flush for an hour or 2. Rheem also sells a flush kit. I would just say that like me, my old hot water tank failed because of sediment, scale. Which you really can never clean out of a tank. Tanks lose efficiency as this sediment accumulates till they just fail. If you are a person that does this maintenance on their tank routinely you will like the tankless much better. So there you have it. My unit works very well and I am happy I went tankless. It just makes sense. You can also install these systems in tandem, multiple units if needed. Again this is a fairly complicated DIY so you might want to check with a professional. Good Luck.
Date published: 2015-05-12
Rated 5 out of 5 by from Great Product & Great Customer Service Received the product promptly. The front cover of the unit had a couple dents from shipping & handling. I contacted Home Depot online & they did not hesitate to offer me a gift card & order me a new cover at no charge. The product itself was easy to install for a dedicated DIYer. If your skills are lacking this would be a massive undertaking. Even for an experienced DIYer this was a big project amongst work & family. the water heater performs as expected! No more timing the kids for showers around the dishwasher, clothes washer, or eachother. No more waiting for more water to heat up, & this unit allows two showers, & a clothes washer to be running at the same time. If you have the money & the know how, this baby is a no brainer! Way more energy efficient as well.
Date published: 2016-02-10
Rated 1 out of 5 by from hot water always goes out, Rheem customer service is as enjoyable as the DMV for a vacation!!! hot water always goes out, Rheem customer service is as enjoyable as the DMV for a vacation!!!
Date published: 2017-03-16
Rated 5 out of 5 by from vicksbr80 We were replacing a 50 gal. electric w.h. I have a tankless gas water heater at home and wanted to put one at work. This was perfect for our application. We were able to vent with 3" pvc due to this being an ecosense. We have much more room in that corner as you can see from the picture. Easy to install and will save us tons on electricity since this is natural gas and is demand only. Quality piece of equipment. Works like a champ.
Date published: 2015-01-13
Rated 4 out of 5 by from Tankless Gas Water Heater Very easy to install and was done in 3.5 to 4 hours. This product is a very good system. However when purchasing the unit Home Depot support staff are not able to answer all of my questions. As they didn't know if they sold all support products to install unit. Which they didn't I had to go to Lowe's home improvement store to get intake and exhaust 3" PVC piping. Also the inlet and outlet valves that go to this unit are sold separately for an additional $100.00 or so but the wording on them say sold separately. Which made me believe that they were not sold as pair of valves. So had to return one set of valves. Also the system flush unit was sold out so I was not able to purchase flush system to the tank less HW system at this time. This Tank less unit also being installed in the garage in place of the old HW tank. Seems to be very quite while running still has a low humming noise. Not annoying but just a low humming when running. Other than those things I'm very happy with this purchase and have recommended it to friends. I do like that I'm now able to have Hot water on demand in my garage from this unit, for car washes or just a bucket of hot cleaning water.
Date published: 2016-01-20
Rated 5 out of 5 by from Recently installed - working well I would recommend the unit, but not to anyone who wants an easy plug-and-play installation. Not an appliance to install yourself, and probably not one to be installed by a plumber w/o some experience with these units. I had my plumber come to my place, look over the installation spot and then agree w/ me on what unit would work there. Maybe extra expense, but worth it in the end. Make sure there is an electrical outlet nearby. Rheem tosses in two brass connection valves for gas and water, but a local plumbing supply store sells complete connection kits, with supply lines attached to the correct valves for this unit, which it turns out is the same as others sold under a number of other brand names: Rudd, Paloma, etc. The kit is worth the added expense. This unit needs a 3/4" gas intake. My old gas water heater had just 1/2", like most. That will probably be an added expense for many folks. My plumber commented that many slap-bang guys would probably just hook up an existing 1/2" connection, collect their $$ and leave. I suspect that might be the origin of some of the complaints I read on this site about the Rheem tankless not heating properly. It needs two 3" PVC pipes leading outside - one exhaust and one intake. The intake needs to have a dip, with a small drain hose attached. The drain is for water condensation, I think when the temp. difference between outside and inside will cause condensation. There is also a condensation drain coming directly from the bottom of the unit - all needing to lead somewhere. The unit cost me a little over $1,000. With installation materials and labor, the total was around $2,000.
Date published: 2016-01-25
Rated 5 out of 5 by from Never ending hot water for large family We are restoring a large victorian home in a rural area. There aren't many plumbers that wanted to work with us due to a tankless system, as many did not have experience with installation. Our plumber had installed one before ours. He had our tankless system installed in about three hours with one trip to pick up plumbing parts he was out of to have it up and running. There is no more waiting for hot water at our house. I can run the dishwasher, two baths and washing machine at the same time, without fear of low water pressure and lack of hot water. We have five children and three of them are in every sport known to man. That means tons of showers every day. Excellent product. I'll never own a hot water tank again.
Date published: 2013-04-30
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