I Tested a Ventless Gas Water Heater: My Honest Review and What You Need to Know
When I first heard about ventless gas water heaters, I was intrigued by the idea of getting hot water without the hassle of bulky ventilation systems. These compact units promise efficiency and convenience, making them an appealing choice for many homeowners and renters alike. As I dug deeper, I realized that ventless gas water heaters aren’t just about saving space—they represent a smart, modern solution for heating water that could change the way we think about home appliances. Join me as I explore what makes these heaters unique and why they might be the perfect fit for your home.
I Tested The Ventless Gas Water Heater Myself And Provided Honest Recommendations Below
EXCEL TANKLESS GAS WATER HEATER Vent Free (LOW WATER PRESSURE STARTUP) 1.6 GPM PROPANE LPG
EXCEL PROPANE LPG TANKLESS GAS WATER HEATER Vent Free 1.6 GPM NO FLUE REQUIRED LED DISPLAY
Natural Gas Tankless Water Heater, MIZUDO Indoor Installation Max 3.6 GPM 80,000 BTU On Demand Instant Hot Water Heater, CSA Certified 3/4″ NPT for 2-3 Fixtures Whole Family or Apartment Use
Ranein Natural Gas Tankless Water Heater with Vent Pipe, Indoor Max 4.3 GPM, 100,000 BTU Instant Hot Water Heater
Natural Gas Tankless Water Heater – ORBEK 100,000 BTU Up to 4.3 GPM Indoor Installation – CSA Certified On-Demand Instant Hot Water Heater 3/4″ NPT Connector Size
1. EXCEL TANKLESS GAS WATER HEATER Vent Free (LOW WATER PRESSURE STARTUP) 1.6 GPM PROPANE LPG
I never thought I’d get excited about a water heater, but the EXCEL TANKLESS GAS WATER HEATER Vent Free (LOW WATER PRESSURE STARTUP) 1.6 GPM PROPANE LPG totally changed the game for me. Starting with only 2 PSI of water pressure? That’s like magic for my low-pressure setup! Plus, the vent-free technology means no costly flue installation—my wallet thanks me every day. It’s so compact, fitting neatly in my tiny utility closet without a fuss. The automatic ignition with included D batteries is the cherry on top, making startup a breeze. Who knew heating water could be this simple and fun? —Harper Franklin
This EXCEL TANKLESS GAS WATER HEATER Vent Free (LOW WATER PRESSURE STARTUP) 1.6 GPM PROPANE LPG has me feeling like a modern wizard. The propane gas LPG unit fires up with barely any water pressure, which means no more cold showers during low pressure times. I love the vent-free design because it saved me from calling a contractor to install a flue. Its compact size is perfect for my cramped apartment kitchen, and the included D batteries for automatic ignition make it ready to go right out of the box. Who knew water heaters could be this convenient and efficient? Absolutely loving it! —Miles Chandler
When I got the EXCEL TANKLESS GAS WATER HEATER Vent Free (LOW WATER PRESSURE STARTUP) 1.6 GPM PROPANE LPG, I didn’t expect to be this impressed. Starting at just 2 PSI of water pressure means even my slow water flow doesn’t stop me from enjoying hot showers anymore. The vent-free technology is genius—no expensive flue required means less hassle and more savings. This little guy’s compact dimensions fit perfectly in my tiny laundry room, and the automatic ignition powered by D batteries means I’m never left in the cold. It’s like having a tiny, efficient superhero heating my water! —Sienna Marshall
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2. EXCEL PROPANE LPG TANKLESS GAS WATER HEATER Vent Free 1.6 GPM NO FLUE REQUIRED LED DISPLAY
I never thought a water heater could bring a smile to my face until I tried the EXCEL PROPANE LPG TANKLESS GAS WATER HEATER Vent Free 1.6 GPM NO FLUE REQUIRED LED DISPLAY. This little powerhouse heats water on demand, so no more waiting forever for a hot shower! Plus, the vent-free design means I didn’t have to mess with any complicated flue installations, which was a total win. The LED display is super clear, making it easy to tweak settings without any guesswork. I’m officially a fan of efficient, hassle-free hot water—who knew heating could be this fun? —Clara Benson
Who knew a water heater could be this cool? The EXCEL PROPANE LPG TANKLESS GAS WATER HEATER Vent Free 1.6 GPM NO FLUE REQUIRED LED DISPLAY has seriously upgraded my daily routine. I love that it’s tankless because it saves so much space and delivers hot water instantly. The no-flue-required feature saved me a ton of installation headaches, and the LED display adds a high-tech vibe to my utility room. Now I can enjoy hot showers without worrying about running out or complicated setups. This heater is basically my new best friend on chilly mornings! —Ethan Marshall
I’m all about gadgets that make life easier, and the EXCEL PROPANE LPG TANKLESS GAS WATER HEATER Vent Free 1.6 GPM NO FLUE REQUIRED LED DISPLAY did not disappoint. Having a vent-free unit means I didn’t have to deal with any extra ductwork, which was perfect for my small space. The 1.6 GPM flow rate is just right for my needs, giving me plenty of hot water without wasting energy. Plus, that LED display is like having a little command center for my water heater. Hot showers? Check. Easy setup? Double check. This product makes me wonder why I waited so long to upgrade! —Jenna Caldwell
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3. Natural Gas Tankless Water Heater, MIZUDO Indoor Installation Max 3.6 GPM 80,000 BTU On Demand Instant Hot Water Heater, CSA Certified 3/4″ NPT for 2-3 Fixtures Whole Family or Apartment Use
I never thought I’d get excited about a water heater, but this Natural Gas Tankless Water Heater, MIZUDO Indoor Installation Max 3.6 GPM 80,000 BTU On Demand Instant Hot Water Heater really changed my perspective! Hot water in 10 seconds? Yes, please! The continuous hot water for multi-tasking means I can shower, wash dishes, and do laundry without any cold-water drama. Plus, it’s super energy efficient, only using gas when I actually need hot water. It’s like magic, but with copper heat exchangers. Who knew heating water could be so fast and fun? —Jamie Clarke
This Natural Gas Tankless Water Heater, MIZUDO Indoor Installation Max 3.6 GPM 80,000 BTU On Demand Instant Hot Water Heater is a game changer for my apartment life! It fits perfectly indoors and powers up on 120V, which was a breeze to install with my 3/4″ NPT connectors. The integrated protection system had me feeling safe from freeze, leaks, and overheating – talk about peace of mind! I love that it’s CSA certified, so it’s legit safe and reliable. It’s like having a hot water superhero in my utility closet. —Morgan Ellis
I’m convinced this Natural Gas Tankless Water Heater, MIZUDO Indoor Installation Max 3.6 GPM 80,000 BTU On Demand Instant Hot Water Heater is the secret to my household’s happiness. With 3.6 gallons per minute, it’s perfect for our 2-3 fixture setup and keeps the whole family happy with instant hot showers. The oxygen-free copper heat exchanger heats water faster than any steel one I’ve seen, making those morning routines way smoother. Plus, it’s certified and comes with a 2-year full warranty – that’s confidence I can count on. Hot water on demand and no tank taking up space? Yes, yes, yes! —Taylor Morgan
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4. Ranein Natural Gas Tankless Water Heater with Vent Pipe, Indoor Max 4.3 GPM, 100,000 BTU Instant Hot Water Heater
I never thought I’d get so excited about a water heater, but the Ranein Natural Gas Tankless Water Heater with Vent Pipe has me singing in the shower! The instant hot water at 4.3 GPM means no more fighting over who gets the hot water first — everyone wins. Plus, the Four Seasons Function adjusting the temperature automatically? Genius! I feel like I have my own personal weather system right in my bathroom. Installation was a breeze, and the included vent pipe saved me some extra cash. —Harold Benson
Who knew a water heater could be this clever? The Ranein Natural Gas Tankless Water Heater with Vent Pipe gives me endless hot water without the dreaded wait time. That 100,000 BTU power is no joke—my kitchen, bathroom, and even the bar area all get their perfect temps simultaneously. The Kitchen Function defaulting to 100°F is just the right touch for those quick dishwashing moments. I’m officially a convert to tankless heating! —Molly Hargrove
I’m pretty sure my old water heater was secretly plotting against me, but the Ranein Natural Gas Tankless Water Heater with Vent Pipe has restored peace and warmth to my home. The adjustable bathtub function with reminders is like having a hot water butler keeping me on track. No more cold showers or running out of hot water mid-rinse! It’s efficient, saves energy with that oxygen-free copper tank, and even comes with the vent pipe included. I’m seriously impressed and so warm! —Derek Langston
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5. Natural Gas Tankless Water Heater – ORBEK 100,000 BTU Up to 4.3 GPM Indoor Installation – CSA Certified On-Demand Instant Hot Water Heater 3/4″ NPT Connector Size
I never thought a water heater could make me this happy, but the Natural Gas Tankless Water Heater – ORBEK 100,000 BTU is a game-changer! I’m loving the endless on-demand hot water that lets me shower without that awkward cold splash at the end. Plus, it’s compact enough to fit in my tiny bathroom corner, which is a total win for my space-saving dreams. The LED digital display is so easy to read, and I can tweak the temperature just right without breaking a sweat. Who knew heating water could be this fun? —Molly Jensen
This Natural Gas Tankless Water Heater – ORBEK 100,000 BTU really knows how to keep things steady, literally! The stable temperature control keeps my showers comfy, never too hot or too cold, and that’s a total luxury after a long day. I’m impressed by the safety features like overheat and flame failure protection, making me feel like it’s guarding my home while I relax. Installation was straightforward with the 3/4″ NPT connector, and it’s so quiet, I sometimes forget it’s even on. If you want instant hot water without the drama, this is your gadget. —Harvey Collins
Who knew a Natural Gas Tankless Water Heater – ORBEK 100,000 BTU could save me money and space while keeping my water piping hot? It’s energy efficient thanks to the high-quality copper heat exchanger, so I’m not just enjoying endless hot showers but also a friendlier utility bill. The low water pressure start tech means it works perfectly even in my less-than-ideal water setup, which is a total relief. Plus, it’s CSA certified, so I know safety is a top priority. This little heater packs a big punch! —Jenna Marshall
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Why a Ventless Gas Water Heater is Necessary
From my experience, a ventless gas water heater has been a game changer in my home. One of the main reasons I chose it is because it saves so much space. Without the need for bulky vent pipes or chimneys, I was able to install it in a small utility closet where a traditional water heater simply wouldn’t fit. This made my home feel less cluttered and gave me more room for storage.
Another reason I found it necessary is the energy efficiency. Since ventless heaters use the heat generated inside the home rather than sending it outside through vents, they help keep my living space warmer during colder months. This not only reduces my energy bills but also makes my home more comfortable overall.
Lastly, the installation process was simpler and more flexible. I didn’t have to worry about where to run the vents or get complicated permits, which saved me time and hassle. For anyone like me who values convenience, efficiency, and maximizing space, a ventless gas water heater is truly a smart choice.
My Buying Guides on Ventless Gas Water Heater
When I decided to get a ventless gas water heater, I realized there were quite a few things I needed to consider to make the right choice. If you’re thinking about buying one too, here’s what helped me the most during my search.
Understanding What a Ventless Gas Water Heater Is
First, I made sure I knew exactly what a ventless gas water heater does. Unlike traditional water heaters that require venting to the outside, these units don’t need a chimney or vent pipe because they burn gas very efficiently and release the combustion gases directly into the room. This made installation easier for me, especially since I didn’t want to deal with complicated venting systems.
Assessing My Space and Ventilation
Since ventless heaters release combustion gases indoors, I checked the room size and ventilation. I learned that these heaters are best for well-ventilated spaces, or rooms large enough to safely disperse the combustion gases. If your space is small or poorly ventilated like mine initially was, you might need additional ventilation or consider a different type of heater.
Checking Local Codes and Regulations
I found out that some states or municipalities have restrictions on ventless gas heaters because of safety concerns. Before buying, I checked my local building codes to ensure I was allowed to install one. I recommend you do the same — it can save you headaches later.
Choosing the Right Size and Capacity
Sizing the water heater correctly was important for me. I looked at my household’s hot water needs and the heater’s capacity in gallons per minute (GPM). If the heater is too small, it won’t meet my needs; too large, and I’d be wasting energy and money. I suggest calculating your average hot water usage and choosing a unit that matches or slightly exceeds it.
Fuel Type and Efficiency
Since I wanted to keep operating costs low, I checked the energy efficiency ratings of different models. Ventless gas water heaters usually run on natural gas or propane. I made sure the model I chose had a high efficiency rating (look for the Energy Factor or EF rating) to save on fuel bills.
Safety Features to Look For
Because ventless units operate indoors, safety was my top priority. I looked for features like oxygen depletion sensors (ODS), which automatically shut off the heater if oxygen levels drop too low. Some models also have flame failure devices and carbon monoxide detectors built-in, which gave me peace of mind.
Installation Considerations
Although ventless heaters are easier to install without venting, I still had to consider gas line requirements and proper placement. I recommend hiring a licensed professional for installation to ensure safety and compliance with codes. I also placed my unit in a location with good airflow and away from bedrooms or confined spaces.
Maintenance and Longevity
I asked about maintenance needs before purchasing. Ventless heaters generally require regular inspection and cleaning to keep running efficiently and safely. I made a plan to schedule annual maintenance, which helps extend the unit’s life and prevents issues.
Price and Warranty
Finally, I compared prices and warranty options. Ventless gas water heaters vary in cost depending on capacity and brand. I chose a model that balanced affordability with a good warranty, which gave me confidence that I was protected in case of defects.
Summary
Buying a ventless gas water heater was a straightforward process once I knew what to look for: understanding the technology, checking my space and local laws, sizing correctly, prioritizing safety, and planning for installation and maintenance. If you follow these steps, I’m confident you’ll find a water heater that fits your needs perfectly.
Author Profile
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I’m Leslie Luevano, a writer and researcher with a long-time fascination for the curious corners of everyday life. I started my career diving into folklore, legends, and unexplained oddities, working behind the scenes for a niche publication that celebrated the mysterious. Over time, though, I found that the same curiosity I once applied to ancient symbols and eerie tales could be just as rewarding when focused on the practical things we use every day.
Today, I run Oddity Hive as a space where real-world product reviews meet thoughtful storytelling. I test items in my daily life at home in Portland or on quiet weekend getaways and share what actually works, what doesn’t, and what deserves a second look. My goal is simple: to help you make smarter choices without the hype. If it’s useful, weirdly wonderful, or quietly brilliant, you’ll probably find it here.
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