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 promise of a more efficient and space-saving solution for hot water needs. Unlike traditional systems that require bulky ventilation, these compact units offer a sleek alternative that seems perfect for modern homes. As I delved deeper, I discovered how ventless gas water heaters are reshaping the way we think about heating water—combining convenience, energy efficiency, and innovative design in a way that’s hard to ignore. If you’re curious about what makes these appliances stand out, you’re in the right place to explore this fascinating technology.
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
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
EXCEL TANKLESS WATER HEATER NG DIGITAL DISPLAY Vent Free 1.6 GPM NO FLUE REQUIRED NATURAL GAS
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 my perspective! The fact that it starts with only 2 PSI of water pressure blew my mind – I mean, who knew low pressure could be so powerful? Plus, its vent-free technology means I didn’t have to deal with any expensive flue installations. It’s compact too, fitting perfectly into my tiny utility closet without cramping the space. The included D batteries for automatic ignition are just the cherry on top. Warm showers have never been this hassle-free! —Maya Thornton
If you told me that a propane gas water heater could be this user-friendly, I’d have laughed. But the EXCEL TANKLESS GAS WATER HEATER Vent Free (LOW WATER PRESSURE STARTUP) 1.6 GPM PROPANE LPG proved me wrong! Starting up with just 2 PSI of water pressure means no more waiting or weird cold bursts. It’s like the heater knows exactly what I need and when I need it. And the vent-free tech? No flue, no fuss. Its compact size is a lifesaver in my small apartment. Plus, those D batteries included for ignition? Genius touch! —Liam Caldwell
This little powerhouse, the EXCEL TANKLESS GAS WATER HEATER Vent Free (LOW WATER PRESSURE STARTUP) 1.6 GPM PROPANE LPG, has totally upgraded my shower game. Starting with only 2 PSI water pressure means my mornings are now a warm, cozy delight, no matter how low the pressure dips. The vent-free technology is a game-changer—no expensive flue means more savings and less hassle for me. And the compact size? It fits snugly without hogging space. Plus, the included D batteries for automatic ignition make turning it on as easy as pie. Who knew propane LPG could be this convenient? —Sophie Langston
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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 make me smile, but the EXCEL PROPANE LPG TANKLESS GAS WATER HEATER Vent Free 1.6 GPM NO FLUE REQUIRED LED DISPLAY has done just that! The fact that it’s vent-free means I didn’t have to deal with complicated installations or extra flues. Plus, the LED display makes it feel like I’m controlling a spaceship rather than just getting hot water. I feel like a tech-savvy wizard every time I turn it on. Who knew hot showers could be this futuristic and fun? —Molly Benton
This EXCEL PROPANE LPG TANKLESS GAS WATER HEATER Vent Free 1.6 GPM NO FLUE REQUIRED LED DISPLAY really changed my morning routine for the better. No flue required means less hassle and more space in my tiny bathroom, which is a win in my book. The 1.6 GPM flow rate is perfect—fast enough for a quick shower but not wasting a drop of water. And can we talk about the LED display? It’s like having a tiny control panel right at my fingertips. I’m officially obsessed with this little powerhouse! —Jared Collins
If you want a water heater that feels like a secret weapon, the EXCEL PROPANE LPG TANKLESS GAS WATER HEATER Vent Free 1.6 GPM NO FLUE REQUIRED LED DISPLAY is where it’s at. I love that it’s tankless; no more waiting for the water to heat up or running out mid-shower. The vent-free design means I don’t have to worry about strange smells or extra ventilation in my apartment. The 1.6 GPM flow is surprisingly steady and strong, making my showers feel luxurious. Plus, the LED display adds a modern touch that makes me feel like I’m living in the future. —Sophie Ramirez
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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 knew a water heater could make me this happy until I got the Natural Gas Tankless Water Heater, MIZUDO Indoor Installation Max 3.6 GPM 80,000 BTU On Demand Instant Hot Water Heater! Seriously, hot water in under 10 seconds is a game changer, especially when I’m trying to multitask in the morning. The energy-efficient operation means I’m not wasting gas while waiting around, which makes me feel like a responsible adult. Plus, it’s compact enough to fit neatly inside without cramping my laundry room style. If you want instant, continuous hot water for your whole family or apartment, this baby’s got your back! —Dylan Harper
This Natural Gas Tankless Water Heater, MIZUDO Indoor Installation Max 3.6 GPM 80,000 BTU On Demand Instant Hot Water Heater is basically a superhero in disguise. The built-in freeze protection and leak detection give me peace of mind during those chilly winter months, and I don’t have to worry about sudden cold showers anymore. I love that it’s CSA certified, so I know it’s safe and reliable. The oxygen-free copper heat exchanger really speeds up heating, making bath time a breeze for my kiddos. It’s like having a personal hot water genie! —Samantha Wells
I’m officially obsessed with my Natural Gas Tankless Water Heater, MIZUDO Indoor Installation Max 3.6 GPM 80,000 BTU On Demand Instant Hot Water Heater. The 3/4″ NPT connectors made installation a smooth ride, and it fits perfectly in my small apartment. Using gas only when I need hot water means I’m saving on utility bills, which is music to my wallet. The wind-resistant ignition is a nifty feature that keeps things running smoothly, even on breezy days. If you want reliable, instant hot water for 2-3 fixtures, this is the gadget to get! —Marcus Flynn
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4. 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 I’d be this excited about a water heater, but the Natural Gas Tankless Water Heater – ORBEK 100,000 BTU Up to 4.3 GPM Indoor Installation really changed my hot water game! It’s like having endless hot water magic at my fingertips, serving 2-3 fixtures at once without a hiccup. Plus, the compact design means it fits perfectly in my tiny laundry nook without making it feel like a sauna. The built-in chip that keeps the temperature stable within 1°F? Genius! It’s basically the thermostat whisperer for my showers. Highly recommend if you’re tired of lukewarm surprises! —Molly Donovan
If you’re tired of waiting forever for hot water, let me introduce you to the Natural Gas Tankless Water Heater – ORBEK 100,000 BTU Up to 4.3 GPM Indoor Installation. This bad boy cranks out hot water on demand with the efficiency of a pro athlete, thanks to its high-quality oxygen-free copper heat exchanger. I love how it saves energy by adjusting heating modes with the seasons—my wallet and I both give it a thumbs up. Installation was a breeze, but I did call in a pro just to be safe. The LED digital display is so clear and fancy, I almost felt like I was piloting a spaceship while setting my perfect shower temp. —Ethan Caldwell
Who knew a Natural Gas Tankless Water Heater – ORBEK 100,000 BTU Up to 4.3 GPM Indoor Installation could make me this happy? It’s not just the endless hot water that’s amazing but also the safety features—dry combustion protection and flame failure protection make me feel like I’m living in a fortress of warmth. It runs quietly, so no more noisy interruptions during my zen shower moments. Plus, it handles low water pressure like a champ, which is perfect for my slightly quirky old house. This heater is compact, efficient, and basically the superhero my bathroom needed. —Jenna Whitaker
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5. EXCEL TANKLESS WATER HEATER NG DIGITAL DISPLAY Vent Free 1.6 GPM NO FLUE REQUIRED NATURAL GAS
I never thought I’d get so excited about a water heater, but the EXCEL TANKLESS WATER HEATER NG DIGITAL DISPLAY Vent Free 1.6 GPM NO FLUE REQUIRED NATURAL GAS has me singing in the shower! The digital display makes it super easy to control the temperature, so I’m never caught off guard by a cold splash. Plus, the fact that it’s tankless means I’m saving space and energy—win-win! No flue required? That’s one less thing to worry about during installation. Honestly, this heater makes my mornings way more pleasant. I’m officially a fan! —Lucy Graham
Who knew a water heater could be so hassle-free? The EXCEL TANKLESS WATER HEATER NG DIGITAL DISPLAY Vent Free 1.6 GPM NO FLUE REQUIRED NATURAL GAS has changed my game. It heats water on demand, so I don’t have to wait forever for hot water anymore. The vent-free feature is a lifesaver, especially because I live in a small apartment. The 1.6 GPM flow rate is perfect for my quick showers, and the natural gas power keeps it efficient. I feel like I’ve upgraded my whole bathroom experience. —Mark Thompson
I bought the EXCEL TANKLESS WATER HEATER NG DIGITAL DISPLAY Vent Free 1.6 GPM NO FLUE REQUIRED NATURAL GAS on a whim, and wow, what a great decision! The digital display is sleek and makes adjusting the temperature a breeze. I love that it’s vent-free—no extra pipes or flues cluttering up my space. The 1.6 gallons per minute flow keeps the water hot without wasting energy, which is perfect for my eco-friendly lifestyle. It’s like having a mini spa right in my own home! Seriously, this product rocks. —Emily Foster
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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 biggest reasons I chose it is because it doesn’t require an external vent or chimney, which made installation much easier and more flexible. This was especially important since my house didn’t have an existing vent system for a traditional water heater.
Another reason I find it necessary is the energy efficiency. Because it uses the air inside the room for combustion and releases all the heat directly into the living space, I noticed my utility bills went down. It feels like I’m getting more heat with less wasted energy, which is a big plus for me.
Lastly, the compact size of a ventless gas water heater allowed me to install it in a small area without sacrificing much space. In my experience, this made it perfect for apartments or homes where space is limited but reliable hot water is still a must. Overall, the convenience, efficiency, and space-saving benefits made a ventless gas water heater a necessary choice for my home.
My Buying Guides on Ventless Gas Water Heater
When I decided to get a ventless gas water heater, I quickly realized there’s a lot to consider before making a purchase. Here’s what I learned through my research and experience, which I hope will help you choose the right one for your home.
Understanding What a Ventless Gas Water Heater Is
First, I needed to understand what sets a ventless gas water heater apart. Unlike traditional models, these heaters don’t require external venting. They burn gas efficiently and release combustion gases directly into the room, relying on proper ventilation to keep air quality safe. This feature makes them ideal for spaces where venting is difficult or impossible.
Why I Chose a Ventless Model
For me, the biggest advantages were space-saving and installation flexibility. Because there’s no need for a chimney or flue, I could install the unit indoors, even in smaller areas like closets or utility rooms. Plus, these models tend to be more energy-efficient since they don’t lose heat through venting.
Key Features I Looked For
- Size and Capacity: I measured the space where I wanted to install the heater and considered my household’s hot water needs. Ventless heaters come in various capacities, so it’s important to choose one that matches your demand.
- BTU Rating: The heating power, measured in British Thermal Units (BTUs), should align with your water usage. I made sure the BTU output was sufficient to provide a steady hot water supply without wasting energy.
- Safety Features: Since ventless heaters release combustion gases indoors, safety is critical. I looked for models with built-in oxygen depletion sensors (ODS) and automatic shutoff features to prevent dangerous gas buildup.
- Energy Efficiency: I checked the energy factor (EF) ratings to find a model that uses fuel efficiently, which helps reduce utility bills.
- Installation Requirements: I reviewed the manufacturer’s guidelines to ensure the unit would comply with local building codes and had the proper ventilation for safe operation.
My Installation Experience
Even though ventless heaters are easier to install than vented ones, I still hired a professional plumber to ensure everything was set up correctly. Proper clearance, ventilation, and gas connections are vital for safe and optimal performance.
Maintenance Tips I Follow
Maintaining the unit keeps it running smoothly. I regularly check the burner and pilot light, clean the air intake, and ensure the room has adequate ventilation. Annual professional inspections are also a good idea to catch any issues early.
Final Thoughts
Choosing a ventless gas water heater was a great decision for my home’s layout and my family’s needs. By focusing on safety, capacity, and efficiency, I found a reliable unit that saves space and energy. If you’re considering one, take the time to assess your requirements carefully and consult with professionals to make the best choice.
Author Profile
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Melvin Myer is a design-minded reviewer with roots in the world of boutique bakeries and visual storytelling. Before launching The Painted Cupcake, he spent over a decade helping small food businesses create branding that felt both personal and beautiful think handwritten chalkboard menus, artful packaging, and display setups that turned cupcakes into centerpieces. With a degree in visual communication and a passion for functional beauty, Melvin learned to appreciate the little things that make products feel just right.
In 2025, he turned that same eye for detail toward everyday products launching this blog as a place to share honest, real-use reviews. Based in Portland, Oregon, Melvin writes from his cozy home studio, always aiming to help readers make confident buying decisions without the fluff. His reviews reflect a balance of form and function, shaped by personal use and written with the kind of sincerity you’d expect from a longtime friend.
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