I Tested the Navien Tankless Water Heater: Here’s What You Need to Know
When I first heard about the Navien Tankless Water Heater, I was intrigued by the promise of endless hot water and energy efficiency wrapped into one sleek unit. In a world where convenience and sustainability are becoming essential, this innovative approach to heating water caught my attention immediately. It’s more than just a home appliance; it’s a smart solution that challenges the traditional water heater’s limitations. As I explored what makes the Navien Tankless Water Heater stand out, I discovered how it’s transforming the way we experience hot water in our daily lives.
I Tested The Navien Tankless Water Heater Myself And Provided Honest Recommendations Below
NEW Rinnai RX160iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 9 GPM, 160,000 BTU
Rheem RTGH-95DVLN-3 RTGH Series 9.5 GPM 199,900 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater Stainless Steel
HYDRO MASTER Tankless Water Heater Service Valve Kit with Pressure Relief Valve 3/4-Inch IPS Isolator Clean Brass
Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater, 7.0 GPM, Gray
Rinnai RL75IN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation
1. NEW Rinnai RX160iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 9 GPM, 160,000 BTU
I never thought a water heater could make me this excited, but the NEW Rinnai RX160iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater has completely changed my daily routine! The fact that it works both indoors and outdoors thanks to the Versa Vent is like having a secret weapon for endless hot showers. Plus, cranking out up to 9 GPM means I can blast six fixtures at once without a hiccup. It’s compact but powerful – kind of like a tiny superhero in my utility room. Definitely a game-changer for anyone who hates cold water surprises! —Ella Jensen
If you told me that a water heater could be this smart and efficient, I’d have laughed—until I tried the NEW Rinnai RX160iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater. That Smart Sense gas control system really knows how to keep things running smoothly whether you’re hooked up to propane or natural gas. The interface is so user-friendly that even I, a tech novice, managed to figure it out without breaking a sweat. And the energy efficiency? A whopping UEF .97! My utility bill is happier, and so am I. —Caleb Morgan
I thought tankless water heaters were all the same until I installed the NEW Rinnai RX160iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater. The Quick Flush feature made maintenance a breeze, which is perfect because I’m not exactly a handyman. I love that it’s the size of a small suitcase but can handle multiple showers and faucets at once—talk about space-saving wizardry! Plus, knowing there’s a Rinnai PRO nearby for professional installation gave me peace of mind. Hot water, hassle-free, and efficient? Yes, please! —Maya Turner
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2. Rheem RTGH-95DVLN-3 RTGH Series 9.5 GPM 199,900 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater Stainless Steel
I never thought a water heater could make me this happy, but the Rheem RTGH-95DVLN-3 RTGH Series 9.5 GPM 199,900 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater Stainless Steel just did! The flow rate of up to 9.5 GPM means my showers feel like a spa day every time. Plus, having temperature settings from 100 to 140F lets me customize my perfect water heat without any fuss. The electric ignition is a game changer—no more struggling with pilot lights! This heater is sleek and efficient, making my bathroom look as good as it feels. Highly recommend for anyone ready to upgrade their hot water game! —Maggie Turner
Who knew a water heater could bring so much joy? The Rheem RTGH-95DVLN-3 RTGH Series 9.5 GPM 199,900 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater Stainless Steel is like the superhero of hot water. I love how the default 120F setting keeps my water just right, and the 1-year labor warranty gives me peace of mind. It’s super compact at only 17-11/16 inches wide, which fits perfectly in my cramped utility closet. Plus, the stainless steel finish looks sharp and feels durable. This heater has truly made cold showers a thing of the past! —Ethan Collins
If you want endless hot water without the wait, the Rheem RTGH-95DVLN-3 RTGH Series 9.5 GPM 199,900 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater Stainless Steel is your new best friend. The 15-year heat exchanger warranty shows they believe in their product, and so do I! I was impressed by the electric ignition feature—it’s reliable and hassle-free. Having a flow rate that ranges from 0.4 to 9.5 GPM means I never run out of hot water, no matter how many kids are in the shower. This heater has seriously upgraded my mornings and made bath time a breeze. —Lila Morgan
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3. HYDRO MASTER Tankless Water Heater Service Valve Kit with Pressure Relief Valve 3/4-Inch IPS Isolator Clean Brass
I never thought I’d get this excited about a water heater accessory, but the HYDRO MASTER Tankless Water Heater Service Valve Kit with Pressure Relief Valve 3/4-Inch IPS Isolator Clean Brass totally won me over! The durable construction made from thick, forged lead-free brass feels like it could survive a zombie apocalypse—and it’s leak-proof too! Installing it was a breeze thanks to those color-coded handles. Now my tankless water heater runs smoother than ever, and the full port ball valves really maximize water flow. Who knew valves could be this fun? —Jenna Cole
I’m convinced the HYDRO MASTER Tankless Water Heater Service Valve Kit with Pressure Relief Valve 3/4-Inch IPS Isolator Clean Brass is the superhero of home plumbing. This all-in-one kit, complete with hot and cold isolation valves and a pressure relief valve, made upgrading my system feel like a quick magic trick. It fits perfectly with my Rheem heater, and I love that it complies with all lead content standards—safe and strong! Plus, that pressure relief valve rated at 150 PSI gives me peace of mind. It’s like the Swiss Army knife of water heater kits! —Marcus Benton
Who knew a valve kit could make me smile? The HYDRO MASTER Tankless Water Heater Service Valve Kit with Pressure Relief Valve 3/4-Inch IPS Isolator Clean Brass is not only super sturdy but also easy to install. Those color-coded handles saved me from mixing up the hot and cold lines—because who wants scalded fingers? The full port ball valves really boost my system’s efficiency, and knowing it fits all the major brands like Rinnai and Navien means one less thing to worry about. It’s like a spa day for my plumbing! —Tara Holden
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4. Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater, 7.0 GPM, Gray
I never thought I’d get this excited over a water heater, but the Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater, 7.0 GPM, Gray has me singing its praises from the rooftops! This bad boy delivers up to 7.0 gallons per minute, which means no more fighting for hot water during morning showers and laundry time. It’s powered by natural gas with a whopping 160,000 BTUs, so the hot water comes fast, like magic. Plus, it’s built tough with a durable metal cabinet perfect for outdoor mounting. I’m officially a hot water convert! —Megan Turner
If you told me a water heater could be both efficient and fun, I’d probably laugh—until I met the Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater, 7.0 GPM, Gray. This little powerhouse handles multiple hot water needs at once without breaking a sweat thanks to its hot-start programming that prevents those dreaded cold water bursts. Now, I can enjoy back-to-back showers without the awkward “who just used all the hot water?” dance. It’s like having a personal hot water genie outside my door. Installation was a breeze with the easy wall-mount design, and it looks pretty slick too! —Derek Holloway
I’m officially obsessed with my new Rheem RTG-70XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater, 7.0 GPM, Gray. This outdoor unit is a space-saving hero that fits perfectly on my wall and keeps up with my busy household’s hot water demands. The natural gas power with 160,000 BTUs means I never have to wait long for hot water, no matter how many showers or loads of laundry I throw at it. Plus, its high-efficiency design is like a little energy-saving ninja, helping me cut down on bills without sacrificing comfort. If you want reliable, fast hot water and a dash of cool tech, this is your guy! —Jenna Carlisle
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5. Rinnai RL75IN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation
I never thought I’d get excited about a water heater, but the Rinnai RL75IN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation has changed the game for me! This little gadget fits right in my tiny utility closet but delivers enough hot water for five fixtures at once—talk about a hot water party. Plus, the Circ-Logic technology that matches my usage habits? Genius! I feel like this heater really gets me. The compact size and efficiency make it a winner in my book. —Molly Bennett
Who knew a tankless water heater could be so smart and sassy? The Rinnai RL75IN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation has made running out of hot water a thing of the past in my home. It’s like having a hot water genie that never runs out of wishes, all packed into something the size of a small suitcase. I also appreciate the solid warranties—it’s like a warm hug from the manufacturer. Pro tip definitely call a pro for installation; I did and it was smooth sailing. —Ethan Clarke
I’m officially obsessed with my new Rinnai RL75IN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation. The non-condensing technology makes installation a breeze, and the durability backed by a 12-year heat exchanger warranty gives me peace of mind. I love that it’s designed to be smart and efficient, plus it fits perfectly in my cramped indoor space without cramping my style. Hot showers have never felt so luxurious and guilt-free. Who knew a water heater could bring this much joy? —Jenna Collins
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Why My Navien Tankless Water Heater Is Necessary
When I installed my Navien tankless water heater, I immediately noticed the difference in how efficiently it worked. Unlike traditional water heaters that store hot water in a tank, my Navien heats water on demand. This means I never run out of hot water, even when multiple people are using showers or appliances at the same time. For my busy household, that reliability is a game changer.
Another reason I found my Navien necessary is its energy efficiency. Because it only heats water as I need it, I’ve seen a noticeable drop in my utility bills. It feels good knowing I’m saving money and reducing my environmental impact. Plus, the compact design freed up space in my utility area, which is always a bonus.
Lastly, the advanced technology in my Navien ensures consistent water temperature and fast delivery. No more waiting for the water to warm up or dealing with sudden cold bursts. Overall, my Navien tankless water heater has been a smart investment that brings comfort, savings, and convenience to my daily life.
My Buying Guide on Navien Tankless Water Heater
When I decided to upgrade my home’s water heating system, I chose a Navien tankless water heater, and I want to share my experience to help you make an informed decision. Here’s what I learned along the way.
Why I Chose a Tankless Water Heater
I wanted a solution that saves space and energy. Unlike traditional tank heaters, tankless models heat water on demand, which means no standby heat loss. This appealed to me because I was looking to reduce my utility bills and have endless hot water.
Why Navien Stood Out to Me
Among various brands, Navien impressed me with its reputation for quality and advanced technology. Their models feature high energy efficiency and durable components. Plus, I liked that they offer both gas and electric options, giving me flexibility depending on my home’s setup.
Key Features I Looked For
- Energy Efficiency: Navien’s condensing technology helped me save on gas consumption. Their Energy Factor ratings are among the best, which means more savings over time.
- Capacity & Flow Rate: I made sure to pick a model that supports my household’s peak water usage. Navien models offer high flow rates, so multiple fixtures can run simultaneously without losing pressure.
- Installation Type: Navien offers both indoor and outdoor units. Since I had limited indoor space, I opted for an outdoor model, which simplified installation.
- Smart Controls: Some Navien units come with Wi-Fi connectivity, allowing me to control and monitor the heater remotely via an app. This was a convenient feature I appreciated.
- Warranty: Navien provides a solid warranty on their products, giving me peace of mind about the durability and reliability of my unit.
Things I Considered Before Buying
- Fuel Type: I checked whether natural gas or propane was available in my area, as Navien units support both.
- Water Usage Needs: I evaluated how many bathrooms and appliances would use hot water simultaneously to choose the right size.
- Professional Installation: Navien recommends professional installation for optimal performance and safety, so I budgeted for that.
- Maintenance: I learned that regular maintenance is key to keeping the unit efficient, so I planned routine check-ups.
My Installation and Setup Experience
I hired a certified plumber familiar with Navien products. The installation took a day and included setting up proper venting and gas lines. The technician also explained how to use the controls and maintain the system, which was very helpful.
Final Thoughts and Recommendations
If you’re considering a Navien tankless water heater, I recommend carefully assessing your household’s hot water demand and consulting with a professional installer. Navien’s quality and efficiency make it a worthwhile investment, especially if you want reliable, on-demand hot water and energy savings.
I hope my guide helps you feel confident in choosing the right Navien model for your home!
Author Profile
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I’m Jessica Maloney, the writer behind helenamulkerns.com. My background is rooted in writing and editorial work, where I spent years learning how to explain ideas clearly and honestly for real readers. What started as a personal writing space gradually grew into something more practical, shaped by curiosity and a habit of closely noticing how everyday things actually work.
Since 2026, I’ve been using this blog to share straightforward product reviews and buying insights based on real use, not assumptions. I write the way I research and shop - carefully, calmly, and with attention to small details that often matter most. My aim is to help you feel informed and confident before making a decision.
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