Rheem RTGH-84DVLN-2 Indoor Natural Gas Condensing Tankless Water Heater Reviews

4.7 Rating 16 Reviews

Rheem RTGH-84DVLN-2 Indoor Natural Gas 11,000 - 157,000 BTU Condensing Tankless Water Heater

Rheem Prestige RTGH-84DVLN-2 is a high efficiency condensing natural gas tankless indoor water heater designed for endless hot water in 2 bathroom homes in colder climates - 3 bathroom homes in warmer climates. Save money and never run out of hot water with new and improved Rheem RTGH.

Efficiency
Up to .93 UEF -US
Up to .96 EF - Canada
With stainless steel condensing heat exchanger
Performance
For 2-3 bathroom homes 8.4 gal./min. at 35°F rise, 6.6 gal./min. at 45°F rise
Exclusive! Water Savings Setting upon activation, this setting can save homeowners up to 1,100 gallons of water per year by decreasing the flow of water through the pipes until the temperature reaches the heaters set temperature
Industry Leading Low Flow Activation - Minimum flow rate of .26 GPM and minimum activation flow rate of .40 GPM ensures the user will receive hot water even in low demand situations
Recirculation Pump Kit-Ready Providing faster hot water at the tap and savings of up to 12,000 gallons water/year
Exclusive! Hot Start Programming - Minimizes cold water bursts by staying in ready-fire state for back-to-back hot water needs
Easy Installation and Service
New! 2" Venting with band connections
New! Vent up to 150 ft with 3" PVC and 60 ft with 2" PVC
Built-in condensate neutralizer
1/2" Gas line compatibility up to 24 ft.
Exclusive! Maintenance Notice Setting - Alerts homeowner, to call for service check (optional)
Self-diagnostic system for easy installation and service
High-altitude capability up to 8,400 ft. elevation above sea level
Digital remote control now pre-wired and 10 ft. of thermostat wire included
Requires a 120-volt power cord (indoor models only)
Technology
EcoNet Enabled - all Tankless products from 2010 to present can connect to EcoNet mobile app via Tankless EcoNet Accessory Kit (REWRA630TWH)
For higher demand application, easily link multiple tankless units to operate as one system:
2 Units: EZ Link Cable
Up to 6 units: MIC-6 Control Board
Up to 20 units: MIC-185 plus MICS-180 manifold control assembly
Environmentally Friendly Low Emissions
Ultra Low NOx burner meets SCAQMD rule 1146.2 requirements
Safety
Exclusive! Overheat Film Wrap - prevents dangerous temperatures and provides industry best side-to-side clearance of 1/2 inch
Industry Best! Freeze protection to -30°F

Save Money Shopping Online, and Dont Get Ripped Off

When you buy your money and energy saving high efficiency natural gas indoor Rheem instant on and endless hot, tankless on-demand condensing water heater from us, you get a brand new unit, at the best possible price, with Rheems amazing 5 year parts, 12-year heat exchange and 1-year labor warranty. Our innovative partnership with Rheem cuts out the middle man and eliminates the high operating costs of traditional brick and mortar big box stores. These savings get passed directly to you, allowing us to offer brand new money, energy and space saving Rheem high efficiency condensing tankless instant on and endless hot natural gas indoor water heaters, at the best possible everyday cheap discount online sales prices.

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Charles S Mitchell

Verified Reviewer

“So far, so good. Winter will be the test, when the unit will be sending hot water to the HVAC air handler that heats the small apartment in which it is installed.”

Helpful Report

Posted 1 year ago

Hi Charles, thank you for your business and your review. You are welcome of course to use the unit you bought in anyway you want. However, we need to let people reading this know the unit you bought the RTGH-84DLN-2 is a standards tankless water heater for domestic hot water only. It is not a boiler, and it is not a combi tankless water heater boiler. It is not made to provide hydronic radiant heat. Doing so voids the warranty. It is for showers, baths, sinks and so on only. There are combination tankless water heater boilers that provide both domestic hot water and radiant heat. These units from Rheem start RCBH and can be found in the Combi Water Heater Boilers section of our website.

Posted 1 year ago

“The heater works great and performs really well. It is energy efficient model so that save energy cost.”

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Posted 2 years ago

“In use for over a year with no problems. Only basic maintenance needed. We saw a slight decrease in the gas bill, but we use it hard. Unlimited hot showers!!!”

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Posted 2 years ago

Richard Marriott

Verified Reviewer

“Being the first one I’ve owned I wasn’t sure. But it works great was super easy to mount and hook up and it works great”

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Posted 3 years ago

Author didn't leave any comments.

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Posted 3 years ago

“It was a little tricky to install and our contractor had to buy venting parts extra after consulting with Rheem. But it has been working great for 2 months and no issues with hot water. It takes about 30-40 seconds to get your hot water and the best part is setting the temperature to 112* and just turn the hot all the way to max. No struggling to find the right temperature. We also saved in space by 10 inches in our utility closet.”

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Posted 3 years ago

John Morrison

Verified Reviewer

“I didn't research Tankless vs Tank enough. Mistakenly I went with the headlines that declared water and energy savings. It takes much longer for me to see hot water in the shower than it did previously. I will also spend much more time with the annual de-scaling process required to maintain the tankless. Horribly disappointed.”

Helpful Report

Posted 3 years ago

I am sorry to hear that, however, it is not possible for it to take more time to get hot water with tankless than a tank. The water coming out of the tankless is instantly hot. When you are waiting for hot water this has nothing to do with the water heater and everything to do with the water in the pipes that has sat and cooled from the previous use. If you are 20 ft away from the water heater and have 2 gallons of water that has sat and cooled in the pipes you have to of course wait for the hot water coming from the water heater to travel that distance and the cooled water that is between you and the water to flow through. If you have a standard 2 gallon per minute shower head then it would of course take one minute before you have hot water. If you want instant hot water at the tap or shower you will need a recirculation pump. I will include a link below to that section of the site, but they recirculate the water so that you do not have cold water left in your pipes from the previous use. In regards to descaling the unit it is true that tankless water heaters heat the water you are using as you are using it with a heating element that is in direct contact with the water, so over time calcium and other dissolved solids builds up and creates what is called scale that needs to be flushed out. Typically this is done every year to 18 months. However, this is a very simple process that takes just a few minutes. The Rheem units controllers will let you know when scale is starting to build up and needs to be flushed out. I included a link to a video below as well as to a flush kit. That all said tankless water heaters save a ton of energy, provide endless hot water, and are much more compact and mount on the wall opening up a good bit of extra space. https://www.tanklesswaterheaterdepot.com/tankless-water-heater-recirculation-pump-kits-and-accessories https://www.tanklesswaterheaterdepot.com/tankless-water-heater-descaling-kit https://youtu.be/St38CFhiaI0

Posted 3 years ago

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Posted 3 years ago