Rheem RTGH-90DVLN-2 Indoor Condensing Natural Gas Tankless Water Heater Reviews

4.3 Rating 4 Reviews

Rheem RTGH-90DVLN-2 Indoor Natural Gas 11,000 - 180,000 BTU Condensing Tankless Water Heater

Rheem Prestige RTGH-90DVLN-2 is a high efficiency condensing Natural Gas tankless Indoor water heater designed for endless hot water in 2 - 3 bathroom homes in colder climates 4 bathroom homes in warmer climates. Save money and never run out of hot water with new and improved compact and energy efficient Rheem RTGH-90DVLN-2 indoor 180,000 BTU endless hot tankless water heater .

Efficiency
Up to .93 UEF -US
Up to .96 EF - Canada
With stainless steel condensing heat exchanger
Performance
For 2 - 4 bathroom homes 9.0 gal./min. at 35°F rise, 7.7 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

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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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Robert LaFleur

Verified Reviewer

“Works great. Support has been amazing. Highly recommend this water heater!”

Helpful Report

Posted 2 years ago

Richard Kastan

Verified Reviewer

“I have had this model installed for about 6 months now and I have to say that I hate it and wish I had never installed it. My main complaint about it is how LOUD it is. Every time you use it there is a loud metallic clanking sound when it comes on and when it goes off. It drives me crazy. The unit is installed in the laundry room and I can hear the clanking from my game room 20 feet away down a hallway. It's terribly annoying. Also, while the unit is heating water there is a whirring sound. This whirring/vibration can also be heard in other rooms - especially the room with which it shares a common wall (it's VERY loud in that room). The whirring/vibration also travels up the studs that the unit is mounted on and into the room above - which just happens to be our bedroom. So, between all of these sounds, you can ALWAYS tell when someone is using the hot water. This noise is bad enough, in my opinion, that I was willing to tear the whole thing out, eat the cost and put in a tank model. My wife was not a fan of that idea - so we are keeping it. Additionally, there is a noticeable delay in the water heating up at the tap vs our old tank heater. This was expected - based on reviews that I had read prior to purchasing - but is much more noticeable than expected (i.e. it takes longer than I thought - especially for long runs). I would suggest you try one of these tankless systems out a someone's house before buying so that you know exactly what you are getting yourself into.”

Helpful Report

Posted 4 years ago

I am sorry to hear that. If you look at all the other customer reviews for this product you will see that there are some misunderstandings. First the units have a 0 decibel rating, meaning they do not make noise. However, they are mounted on the wall and vibrate when they are in use. That vibration of the wall can make noise. It sounds like there is something in or on the wall that is rattling and making that noise. You may want to check the unit's mounting brackets. Secondly in regards to the time it takes to get hot water 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. https://www.tanklesswaterheaterdepot.com/tankless-water-heater-recirculation-pump-kits-and-accessories

Posted 4 years ago

“I love the tankless water Heater. The only draw back is it does take a like time for the hot water to get to the shower. But once it is there is nice i do not run out. I would recommend to every one. For one shower a day for a month it cost me 7 dollars in gas a month.”

Helpful Report

Posted 5 years ago

“Had one of the first tankless to come out twenty years ago replaced the old one with the rheem II have a lot more hot water now”

Helpful Report

Posted 5 years ago