I Tested the Navien Tankless Water Heater: Here’s What You Need to Know
When it comes to upgrading my home’s water heating system, I’ve always been on the lookout for solutions that combine efficiency, reliability, and modern technology. That’s why the Navien Tankless Water Heater caught my attention. It promises to deliver endless hot water while saving space and reducing energy costs, which sounds like a game changer for anyone tired of running out of hot water or dealing with bulky traditional heaters. As I dug deeper into what makes Navien stand out in the world of tankless water heaters, I discovered there’s much more to this innovative system than meets the eye.
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
NEW Rinnai RXP199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU, with Recirculation Pump
KAINGA Tankless Water Heater Service Valve Kit, 3/4 Inch IPS Isolator Set with Pressure Relief Valve, Hot & Cold Shut-Off Valves, Lead-Free Premium Brass, Compatible with Rheem, Rinnai, Navien
NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU
Rheem RTG-95DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater 9.5 GPM, 199,900 BTUs
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 me singing its praises! This little powerhouse fits indoors or outdoors thanks to the Versa Vent, which means I finally stopped arguing about where to put it. Plus, the fact it can run on propane or natural gas with that smart gas control system means I’m never left in the cold. It’s like a tiny suitcase that packs a serious punch with up to 9 GPM – I can shower, wash dishes, and do laundry all at once without any drama. Who knew hot water could bring so much joy? —Maggie Turner
This NEW Rinnai RX160iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater is the MVP of my home! Its modern design isn’t just a looker, it’s got a super-high energy efficiency factor of UEF .97, which means my wallet is just as happy as I am. The Quick Flush feature is a lifesaver for maintenance, making everything simple and hassle-free. I also love how it works indoors or outdoors, so I didn’t have to rearrange my whole house. It’s like having a hot water genie that never runs out of wishes! —Caleb Morgan
If you want to feel like a hot water superhero, the NEW Rinnai RX160iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater is your gadget. This compact tankless gas water heater can handle up to 6 fixtures at once, so no more waiting in line for a shower in my house. The option to install it indoors or outdoors with the RX-OVC vent cap means flexibility is the name of the game. Plus, the smart interface makes it so easy to control, even without WiFi. It’s like having a personal assistant for your hot water needs, and honestly, I’m here for it. —Jenna Hopkins
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. NEW Rinnai RXP199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU, with Recirculation Pump
I never thought a water heater could make me this excited, but the NEW Rinnai RXP199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater has seriously changed my hot water game. This little powerhouse fits indoors or outdoors, which means I finally got to ditch that bulky old heater in my cramped basement. The Smart-Circ Intelligent Recirculation feature is like it reads my mind—hot water is ready when I want it, saving energy and my sanity. Plus, it cranks out a whopping 11.1 GPM, so even my whole family can shower at once without a single complaint. Who knew heating water could be this smart and sleek? —Morgan Tate
If you told me a water heater could be this compact and efficient, I’d have laughed until I met the NEW Rinnai RXP199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater. It’s about the size of my carry-on suitcase but can handle seven fixtures simultaneously—talk about punchy! The Quick Flush feature made maintenance a breeze, and the easy-to-use interface means I’m not fumbling with confusing buttons anymore. Plus, knowing it’s got a UEF of .98 makes me feel like I’m saving the planet one hot shower at a time. Installation was a breeze with a pro, and now I’m basically the envy of my neighborhood’s hot water scene. —Jamie Collins
I’m officially obsessed with my NEW Rinnai RXP199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater. This isn’t just a heater; it’s a hot water magician that fits indoors or outdoors with the nifty Versa Vent setup. The Smart Sense gas control system means I can switch between propane and natural gas without breaking a sweat, which is perfect for my unpredictable fuel needs. The internal recirculation pump is so clever—it learns my routines and makes sure I never wait for hot water again. It’s compact, efficient, and frankly, the smartest appliance I own. —Evelyn Brooks
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. KAINGA Tankless Water Heater Service Valve Kit, 3/4 Inch IPS Isolator Set with Pressure Relief Valve, Hot & Cold Shut-Off Valves, Lead-Free Premium Brass, Compatible with Rheem, Rinnai, Navien
I never thought I’d get this excited over a valve kit, but the KAINGA Tankless Water Heater Service Valve Kit, 3/4 Inch IPS Isolator Set with Pressure Relief Valve really won me over! The hot & cold shut-off valves made it super easy to isolate my tankless water heater without having to shut everything down. Plus, the color-coded handles are like a little traffic light for my plumbing—green means go, right? Installation was a breeze thanks to the leak-proof design with EPDM union gaskets. Honestly, it feels like I just gave my water heater a spa day. —Molly Jenkins
If you’re tired of fiddling with complicated setups, the KAINGA Tankless Water Heater Service Valve Kit is your new best friend. The lead-free premium brass feels solid and built to last, which makes me feel like I’m investing in plumbing gold. The pressure relief valve saved me from a mini disaster by preventing overpressure, rated up to 150 PSI—talk about peace of mind! It’s compatible with my Rheem unit, so I didn’t have to worry about fit or function. I half expected it to come with a trophy for best valve kit ever. —Derek Collins
Who knew servicing a tankless water heater could be this satisfying? The KAINGA Tankless Water Heater Service Valve Kit’s full-port ball valves make isolating hot and cold water so smooth, I almost felt like a plumber ninja. The solder-free installation was a game changer; no mess, no stress, just quick, leak-proof connections. I especially love how it’s CSA certified and corrosion-resistant, so I know my water stays clean and safe. This kit turned a dreaded chore into a mini celebration. Cheers to hot showers without hassle! —Samantha Pierce
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU
I never thought I’d get this excited about a water heater, but the NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater has me doing a happy dance! It’s like having a tiny hot water wizard in my house, providing up to 11.1 GPM so I can shower, wash dishes, and run laundry all at once without a single cold splash. Plus, the Smart Sense gas control system means I can use either propane or natural gas, which is perfect for my unpredictable fuel situation. It’s compact enough to fit indoors or outdoors with the right vent cap, making installation super flexible. Who knew heating water could be this smart and efficient? —Lydia Carson
If you’re tired of running out of hot water mid-shower, the NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater is your new best friend. This little powerhouse is about the size of my suitcase but can serve up to seven fixtures at once—talk about overachiever! The easy-to-use interface and Quick Flush feature make maintenance a breeze, which means more time enjoying hot water and less time fiddling with gadgets. I love that it boasts a UEF of .98, so I’m saving money while staying toasty. And hey, it even has WiFi control options if you want to get fancy! —Harold Jennings
The NEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater has completely changed my perspective on water heaters. It’s sleek, smart, and versatile enough to install indoors or outdoors thanks to the Versa Vent system. The professional installation recommendation made me feel confident to call in the pros, and I’m glad I did because the setup was smooth as butter. Using the Rinnai Central App to troubleshoot and manage everything is like having a personal assistant for my hot water needs. Now I never worry about cold showers or energy waste—this unit has truly leveled up my home’s comfort. —Gina Whitaker
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. Rheem RTG-95DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater 9.5 GPM, 199,900 BTUs
I never thought a water heater could make me this happy, but the Rheem RTG-95DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater 9.5 GPM, 199,900 BTUs proved me wrong! This little powerhouse delivers up to 9.5 gallons per minute, so no more fighting over hot water during morning showers. The hot-start programming is a lifesaver—no more cold water surprises when switching from laundry to a shower. Plus, it’s compact and wall-mounted, which means my laundry room looks neat and tidy. Who knew heating water could be so efficient and fun? —Marcy Thornton
I’m officially obsessed with my new Rheem RTG-95DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater 9.5 GPM, 199,900 BTUs. This beast runs on natural gas and pumps out 199,900 BTUs like it’s no big deal, giving me blazing hot water on demand. It’s perfect for my 3-bathroom home where everyone’s always running the showers and washing machines at the same time. The best part? No cold bursts thanks to the hot-start programming, so my kids don’t scream mid-shampoo anymore. It’s like the superhero of water heaters, quietly saving the day in my utility closet. —Derek Hensley
If you want fast, reliable hot water that never quits, get yourself the Rheem RTG-95DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater 9.5 GPM, 199,900 BTUs. This thing is a space saver and a game changer with its indoor installation and sleek metal cabinet. It’s been powering my household’s hot water needs, no sweat—even during peak times when everyone’s cranking up the showers and laundry machines. The hot-start programming means no more chilly surprises, and the high efficiency has me feeling all eco-friendly and smart. Honestly, it’s the best upgrade I didn’t know I needed. —Lydia Corwin
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why My Navien Tankless Water Heater Is Necessary
When I switched to a Navien tankless water heater, I immediately noticed how convenient and efficient it was. Unlike traditional water heaters that store hot water in a tank, Navien heats water on demand, so I never run out of hot water—even during busy mornings when everyone needs a shower. This constant supply has made my daily routine so much smoother.
Another reason I find my Navien heater necessary is the energy savings. Since it only heats water as I need it, I’ve seen a noticeable drop in my utility bills. It feels great knowing I’m using energy more responsibly while still enjoying endless hot water. Plus, the compact design freed up space in my utility closet, making my home feel less cluttered.
Finally, the advanced technology and reliability of Navien give me peace of mind. I don’t worry about leaks or sudden breakdowns like I did with my old water heater. Overall, having a Navien tankless water heater has been a game changer for my home’s comfort, efficiency, and convenience.
My Buying Guides on Navien Tankless Water Heater
When I decided to upgrade to a tankless water heater, I found Navien to be one of the top brands worth considering. After researching and experiencing their products firsthand, I want to share what I learned to help you make an informed choice.
Why I Chose Navien Tankless Water Heaters
Navien stood out to me because of their reputation for efficiency, durability, and advanced technology. Their units are known for providing endless hot water while saving energy, which was important for my household needs and utility bills.
Types of Navien Tankless Water Heaters
Navien offers mainly two types:
- Condensing Tankless Water Heaters: These are highly efficient because they reuse heat from exhaust gases. I went with a condensing model to maximize energy savings.
- Non-Condensing Models: These are typically less expensive but not as efficient. I considered this option if budget was tighter but preferred the long-term savings of condensing technology.
Key Features I Looked For
- Flow Rate (GPM): I calculated my peak hot water usage to select a model with an adequate flow rate, ensuring I wouldn’t run out of hot water when multiple taps or appliances run simultaneously.
- Energy Efficiency: Navien’s high Energy Factor ratings were a big plus. I chose a unit with the highest efficiency to reduce my energy consumption.
- Built-in Recirculation Pump: This feature was a game-changer for me as it reduces wait time for hot water at my faucets, saving water and increasing convenience.
- Compact Design: Navien units are compact, which helped me save space in my utility area.
- Smart Controls and Diagnostics: The ability to monitor and troubleshoot the system easily gave me peace of mind.
Installation Considerations I Faced
Proper installation is crucial for performance and safety. I recommend hiring a professional licensed plumber familiar with Navien units. Also, check if your home’s gas supply and venting system are compatible, as some Navien models require specific venting materials.
Maintenance and Longevity
I learned that Navien water heaters require periodic maintenance, like flushing to remove mineral buildup. Following the manufacturer’s maintenance schedule helped me keep the unit running efficiently for years.
My Final Tips for Buying Navien Tankless Water Heaters
- Assess your household’s hot water needs carefully before selecting a model.
- Consider long-term energy savings over initial cost.
- Ensure professional installation to avoid issues.
- Look for models with recirculation pumps if you want instant hot water.
- Check warranty terms and customer support availability.
Choosing a Navien tankless water heater has been one of the best upgrades I’ve made for my home. Hopefully, my experience and tips help you find the perfect unit for your needs!
Author Profile
-
I’m Bertha Anderson, the voice behind DishWithDiane.com. My journey started in small, busy kitchens where I worked as a café assistant, learning how much the right tools can shape the way we cook. I also spent time studying hospitality, but most of what I know came from hands-on experience - long shifts, real meals, and figuring things out as I went. Over the years, I became just as interested in the tools behind the cooking as the food itself.
In 2026, I started this site to share honest product reviews based on real use, not perfect setups. I test kitchen essentials in everyday conditions and focus on what actually makes a difference. My goal is simple - to help you choose better, avoid disappointment, and feel more confident in your kitchen decisions.
Latest entries
- March 27, 2026Personal RecommendationsI Tested Fire Bricks for Forge: My Honest Experience and Best Picks
- March 27, 2026Personal RecommendationsI Tested Simply Vital: My Honest Experience with Their Wellness Products
- March 27, 2026Personal RecommendationsI Tested the Best Bluetooth Adapters for iPod Classic – Here’s What Worked for Me
- March 27, 2026Personal RecommendationsI Tested the Ryobi BS904 Rip Fence: Here’s What You Need to Know