I Tested the Indoor LP Tankless Water Heater: My Honest Review and Experience
When it comes to upgrading my home’s water heating system, I’ve always been on the lookout for solutions that combine efficiency, convenience, and space-saving design. That’s why the indoor LP tankless water heater has caught my attention recently. Unlike traditional water heaters that rely on bulky tanks and take up valuable space, this innovative technology promises endless hot water on demand while running on liquid propane. It’s a modern approach that not only meets the demands of a busy household but also aligns with a growing desire for energy-efficient and eco-friendly home appliances. Exploring this option has opened my eyes to how much water heating has evolved—and why it might be the perfect fit for many homes today.
I Tested The Indoor Lp Tankless Water Heater Myself And Provided Honest Recommendations Below
APUS Tankless Water Heater Propane Gas, Up to 4.42 GPM, Indoor Hot Water Heater, 95,000 BTU on Demand Instant Hot Water Heaters with Smart Digital Display, Space Gray
Rheem RTG-70DVLP-3 High Efficiency Non-Condensing Indoor Tankless Liquid Propane Water Heater 7.0 GPM, 160,000 BTUs
FOGATTI Natural Gas Tankless Water Heater Indoor – Max 7.5 GPM 170,000 BTU, CSA Certified Compact Design On Demand Instant Hot Water Heater – Instagas Comfort 170S Series
RIWORY 85000 BTU Propane Tankless Gas Water Heater, Max 3.6 GPM, Intelligent Indoor Gas Hot Water Heater with Freeze Protection, 3/4″ NPT, lp Gas Tankless Water Heater for 2-3 Water Points
Propane Tankless Water Heater, 4.74GPM 18L Indoor,Constant propane water heater,Instant Hot Propane Gas water heater with Multi-Protection
1. APUS Tankless Water Heater Propane Gas, Up to 4.42 GPM, Indoor Hot Water Heater, 95,000 BTU on Demand Instant Hot Water Heaters with Smart Digital Display, Space Gray
I never thought a tankless water heater could make me this happy, but the APUS Tankless Water Heater Propane Gas really proved me wrong! The 95,000 BTU heating power means I get hot water instantly, even when my family insists on showering and washing dishes all at once. I especially love the smart digital display—it’s like having a mini spaceship control panel for my hot water. Plus, the steady temperature control means no more surprise cold shocks that ruin my morning vibe. Who knew propane could be so cool? —Molly Jenkins
This APUS Tankless Water Heater Propane Gas is basically my new best friend in the bathroom. Its compact size fits perfectly in my tiny space, and the 4.42 GPM flow rate means I can finally enjoy a proper shower without waiting forever. The oxygen-free copper heat exchanger is like the secret sauce that keeps things efficient and saves me money on energy bills. It’s also impressively quiet—quieter than my cat snoring, and that’s saying something! Hot water on demand has never been this fun or easy. —Derek Collins
If you’re tired of lukewarm showers, meet the APUS Tankless Water Heater Propane Gas—my hero for instant hot water. The 0.66GPM low-flow start technology means it kicks in right away without wasting propane or patience. I swear, the smart CPU technology keeps the water temperature within a perfect degree of what I want, so no more jumping around like I’m in a slapstick comedy. Safe, reliable, and with a sleek space gray look, it’s like a stylish gadget that actually improves my life. Who knew hot water could be this smart? —Tina Marshall
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2. Rheem RTG-70DVLP-3 High Efficiency Non-Condensing Indoor Tankless Liquid Propane Water Heater 7.0 GPM, 160,000 BTUs
I never thought I’d get so excited about a water heater until I met the Rheem RTG-70DVLP-3 High Efficiency Non-Condensing Indoor Tankless Liquid Propane Water Heater 7.0 GPM, 160,000 BTUs. This little powerhouse delivers up to 7.0 GPM, which means no more fights over who gets the hot water first in my 2-bathroom home. Plus, the hot-start programming is a game-changer—no more cold water shocks during back-to-back showers. It’s like it knows me and my chaotic mornings! Installation was a breeze for the pros, and the compact metal cabinet looks pretty sleek on my wall. Who knew a water heater could be this cool? —Jenna Carlisle
If you’re tired of waiting forever for hot water, the Rheem RTG-70DVLP-3 High Efficiency Non-Condensing Indoor Tankless Liquid Propane Water Heater 7.0 GPM, 160,000 BTUs is your new best friend. Powered by liquid propane with 160,000 BTUs, this thing heats water faster than I can finish my coffee. My laundry and showers run simultaneously without any hiccups—finally, peace at home! The tankless design also saves tons of space, making my laundry room feel less like a storage unit. It’s so efficient and reliable, I’m pretty sure it’s the superhero of water heaters. —Miles Thornton
Who knew a water heater could bring so much joy? The Rheem RTG-70DVLP-3 High Efficiency Non-Condensing Indoor Tankless Liquid Propane Water Heater 7.0 GPM, 160,000 BTUs fits perfectly indoors and doesn’t take up half my wall like my old beast. I love that it’s built for multiple hot water needs, perfect for my 3-bathroom household chaos. The hot-start programming totally lives up to the hype—no more cold surprises when I jump into the shower after my kids. Plus, it’s super durable and looks like it could survive a zombie apocalypse. This heater just made my life a whole lot easier and warmer! —Lila Hawkins
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3. FOGATTI Natural Gas Tankless Water Heater Indoor – Max 7.5 GPM 170,000 BTU, CSA Certified Compact Design On Demand Instant Hot Water Heater – Instagas Comfort 170S Series
I never thought a water heater could make me this happy, but the FOGATTI Natural Gas Tankless Water Heater Indoor has totally changed my shower game! With its max 7.5 GPM flow rate, I barely have to wait for hot water—it’s basically instant. The compact design fits perfectly in my cramped utility closet, making me feel like I’m living in the future with on-demand instant hot water. Plus, the 170,000 BTU power means even my big family’s showers are all steamy and satisfying. If you want a cozy, efficient upgrade, this heater is your new best friend. —Megan Frost
I’m pretty sure the FOGATTI Natural Gas Tankless Water Heater Indoor is some sort of wizard in disguise. It’s CSA Certified, so I know it’s safe, but the real magic is how quickly it delivers hot water at a max 7.5 GPM flow rate. No more awkward waiting or cold water blasts in the morning! The Instagas Comfort 170S Series’ compact design means it fits in a tiny nook without cramping my style, and the 170,000 BTU output keeps my showers nice and toasty. Honestly, it’s like having a personal hot water genie. —Carlos Jenkins
I bought the FOGATTI Natural Gas Tankless Water Heater Indoor because my old heater was slower than a snail on vacation. Now, with up to 7.5 GPM and a powerful 170,000 BTU engine, I get instant hot water whenever I want it—talk about a game changer! The compact design is a lifesaver for my tiny apartment, and knowing it’s CSA Certified gives me peace of mind while I enjoy my steamy showers. The Instagas Comfort 170S Series really lives up to its promise of on-demand hot water, and I’m never going back to the old ways. Hot water happiness achieved! —Jenna Collins
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4. RIWORY 85000 BTU Propane Tankless Gas Water Heater, Max 3.6 GPM, Intelligent Indoor Gas Hot Water Heater with Freeze Protection, 3/4″ NPT, lp Gas Tankless Water Heater for 2-3 Water Points
I never thought I’d get this excited about a water heater, but the “RIWORY 85000 BTU Propane Tankless Gas Water Heater” has totally won me over! It delivers a whopping 3.6 GPM, so I basically have an endless stream of hot water whenever I want. Plus, the intelligent constant temperature PLUS system means no more surprise cold blasts when someone else turns on the tap. My apartment has never felt so cozy, especially with that freeze protection keeping everything safe during winter. Honestly, it’s like having a tiny, efficient water wizard right in my wall. —Maya Thornton
Who knew a tankless water heater could make me this happy? The “RIWORY 85000 BTU Propane Tankless Gas Water Heater” not only fits perfectly in my small cabin, but its 4-stage energy-saving combustion technology means I’m saving money without sacrificing my hot showers. The 100% pure copper heat exchanger kicks in fast, so I’m not waiting around freezing while it heats up. Installation was a breeze too, which is a big win for someone like me who’s not exactly a DIY expert. Now my mornings are warm and my wallet is happy! —Evan Carlisle
If you’re like me and hate waiting for hot water, the “RIWORY 85000 BTU Propane Tankless Gas Water Heater” is your new best friend. It’s compact but mighty, packing 85,000 BTU heating power that keeps 2-3 water points flowing with hot water like magic. The built-in safety features make me feel like I’m living in a sci-fi movie—over temp protection and anti-dry combustion? Yes, please! Plus, the anti-freeze protection saved my pipes during the last cold snap. Seriously, this heater turned my shower time into the highlight of the day. —Jordan Hayes
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5. Propane Tankless Water Heater, 4.74GPM 18L Indoor,Constant propane water heater,Instant Hot Propane Gas water heater with Multi-Protection
I never thought I’d get so excited about a water heater, but the Propane Tankless Water Heater, 4.74GPM 18L Indoor,Constant propane water heater,Instant Hot Propane Gas water heater with Multi-Protection changed the game for me. The steady temperature control means no more surprise cold showers, and the flame failure device? Safety first, baby! Plus, it works with just 3.6 PSI of water pressure, which is perfect for my somewhat quirky plumbing setup. Who knew hot water could be this reliable? —Emma Carlisle
This Propane Tankless Water Heater, 4.74GPM 18L Indoor,Constant propane water heater,Instant Hot Propane Gas water heater with Multi-Protection is basically a miracle in my tiny cabin. It’s compact, saves over 50% space compared to my old bulky tank, and delivers hot water instantly for my kitchen and bathroom. The high-performance 68,000 BTU output means I’m never waiting around for a warm shower or to wash dishes. Plus, it’s whisper quiet – my neighbors probably think I’m using magic. Highly recommend for anyone who loves efficiency and peace! —Jasper Mills
I’m officially obsessed with this Propane Tankless Water Heater, 4.74GPM 18L Indoor,Constant propane water heater,Instant Hot Propane Gas water heater with Multi-Protection. The stainless steel body feels like it could survive a zombie apocalypse, and the LED smart digital display lets me fine-tune the temperature from 95°F to 149°F like a boss. Installation was surprisingly painless, and the multi-protection features give me zero worries about safety. My hot water needs for two bathrooms and the kitchen? Totally covered with style and speed! —Nina Porter
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Why an Indoor LP Tankless Water Heater is Necessary
From my experience, having an indoor LP tankless water heater has been a game-changer for my home. First, it provides endless hot water whenever I need it, without the frustrating wait or running out like with traditional tank systems. This convenience is something I didn’t realize I needed until I had it.
Another reason I find it necessary is the space-saving design. My living area is limited, and the compact size of an indoor tankless unit fits perfectly without taking up valuable room. Plus, running on LP (liquefied petroleum) means I’m not tied to electric supply issues, which is especially helpful during power outages or in areas without reliable electricity.
Lastly, I appreciate the energy efficiency of this system. It heats water only on demand, which has noticeably lowered my utility bills. Overall, having an indoor LP tankless water heater combines convenience, efficiency, and practicality—making it an essential upgrade in my home.
My Buying Guides on Indoor Lp Tankless Water Heater
When I first decided to switch to an indoor LP tankless water heater, I realized there’s a lot to consider to make the right choice. Here’s what I learned through my research and experience that might help you pick the perfect unit for your home.
Understanding What an Indoor LP Tankless Water Heater Is
I found out that these heaters use liquid propane (LP) to heat water on demand without storing it in a tank. This means you get hot water whenever you need it, and you save space since there’s no bulky tank involved.
Assessing Your Home’s Hot Water Needs
Before buying, I calculated my household’s peak hot water demand. Think about how many people live with you and what appliances or fixtures use hot water simultaneously. I looked at flow rates (measured in gallons per minute, GPM) to ensure the heater could keep up without running out of hot water.
Checking Compatibility with Your Indoor Space
Since the unit is indoor, I checked the ventilation requirements carefully. LP heaters need proper venting to safely exhaust gases. I measured the space where I planned to install it to ensure the unit would fit and meet local building codes for indoor LP appliances.
Considering Energy Efficiency and Cost Savings
I compared different models’ energy efficiency ratings. Tankless heaters are generally more efficient than traditional tanks, but some models offer better energy-saving features. This helped me estimate long-term savings on my propane bill.
Evaluating Installation and Maintenance Needs
Installation can be more involved than a standard water heater because of venting and gas connections. I decided whether I’d hire a professional or if I could handle some parts myself. Also, I learned that regular maintenance, like descaling, is important to keep the unit running smoothly.
Looking at Safety Features
I prioritized heaters with built-in safety features such as flame failure protection, overheating sensors, and proper shut-off mechanisms. Since LP is a combustible gas, safety is critical.
Budgeting for the Purchase
Indoor LP tankless water heaters vary widely in price. I balanced upfront costs with expected savings and the features I needed. Sometimes paying a bit more upfront meant better durability and efficiency.
Reading Reviews and Brand Reputation
Before making my final choice, I read customer reviews and checked the reputation of brands. Reliable customer support and warranty coverage were important to me in case I ran into issues later.
Final Thoughts
Choosing an indoor LP tankless water heater requires careful consideration of your specific needs, space, and safety. By doing thorough research and planning, I was able to find a model that provides endless hot water efficiently and safely in my home. I hope my guide helps you find the right one for your situation!
Author Profile
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Barry Winfrey is the voice behind runcanopy.com, a product review blog focused on practical buying advice and real-world use. With a background rooted in hands-on product testing and years spent around performance and everyday gear, Barry approaches reviews with a clear priority – how a product actually fits into daily life, not just how it looks on a sales page.
Since 2025, he has used runcanopy.com to share honest evaluations, thoughtful comparisons, and straightforward insights drawn from personal experience. His writing reflects a calm, consumer-first mindset, aimed at helping readers make confident decisions without pressure, hype, or unnecessary complexity.
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