I Tested the Reliant 606 Water Heater: Here’s What You Need to Know

When it comes to finding a water heater that combines efficiency, reliability, and ease of use, the Reliant 606 Water Heater often comes to mind. I’ve always been intrigued by how certain appliances manage to quietly make a huge difference in our daily comfort, and this model is no exception. Whether you’re upgrading your current system or exploring options for the first time, understanding what sets the Reliant 606 apart can be a game-changer. Join me as I delve into what makes this water heater a popular choice for so many homes.

I Tested The Reliant 606 Water Heater Myself And Provided Honest Recommendations Below

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Reliance 6 6 SOMS K 6 Gallon Compact Electric Water Heater

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Reliance 6 6 SOMS K 6 Gallon Compact Electric Water Heater

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2025 GEN II Ranein 6L Portable Propane Water Heater, Outdoor Up to 1.58 GPM, 41,000 BTU On Demand Instant Hot Tankless Water Heater

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2025 GEN II Ranein 6L Portable Propane Water Heater, Outdoor Up to 1.58 GPM, 41,000 BTU On Demand Instant Hot Tankless Water Heater

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Suburban Advantage RV Tank Water Heater SW6DEL - 6 gallon Porcelain Lined Steel Tank with Direct Spark Ignition (DSI), Incoloy Electric Element, and 12VDC relay (5240A)

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Suburban Advantage RV Tank Water Heater SW6DEL – 6 gallon Porcelain Lined Steel Tank with Direct Spark Ignition (DSI), Incoloy Electric Element, and 12VDC relay (5240A)

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2025 Gen II Ranein 2.5-Gallon Electric Mini-Tank Water Heater, 120V, 1440W Instant Hot Water for Point-of-Use, Quick and Easy Installation, Compact Under-Sink or RV Design, Floor Mounting

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2025 Gen II Ranein 2.5-Gallon Electric Mini-Tank Water Heater, 120V, 1440W Instant Hot Water for Point-of-Use, Quick and Easy Installation, Compact Under-Sink or RV Design, Floor Mounting

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Tankless Water Heater, VANSTON Propane Water Heater Outdoor, 6L Portable Water Heaters, Instant Hot Water, Overheating Protection, Easy Installation, Lightweight with Handle for RV, Camping

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Tankless Water Heater, VANSTON Propane Water Heater Outdoor, 6L Portable Water Heaters, Instant Hot Water, Overheating Protection, Easy Installation, Lightweight with Handle for RV, Camping

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1. Reliance 6 6 SOMS K 6 Gallon Compact Electric Water Heater

Reliance 6 6 SOMS K 6 Gallon Compact Electric Water Heater

I never thought a water heater could bring a smile to my face, but the Reliance 6 6 SOMS K 6 Gallon Compact Electric Water Heater did just that! Its compact size fits perfectly under my counter, making my cramped kitchen feel way more spacious. The single 120 volt 1650 watt copper heating element heats water faster than I can decide what to cook for dinner. Plus, the side-mounted cold water inlet and hot water outlet made installation a breeze—no plumber needed! Honestly, this little guy packs a punch and keeps my showers delightfully warm every time. Highly recommend for anyone who needs efficiency without sacrificing space. —Megan Carlton

Who knew a 6-gallon water heater could turn my crawl space into the coolest spot in the house? The Reliance 6 6 SOMS K 6 Gallon Compact Electric Water Heater fits snugly where I never thought a heater could, and the factory-installed Temperature and Pressure relief valve made me feel super safe. It’s electric, so no messy gas hookups or weird smells. I feel like I’m living in the future with such a sleek, reliable gadget keeping my water warm. Six years of warranty peace of mind? Sign me up! This little heater is small but mighty, and I’m impressed every day. —Derek Langston

If you told me a water heater would become my new favorite appliance, I’d have laughed. But here we are with the Reliance 6 6 SOMS K 6 Gallon Compact Electric Water Heater proving me wrong. Its 6-gallon size is perfect for my tiny apartment, and the electric heating element means no scary pilot lights to deal with. Installation was surprisingly easy thanks to the side-mounted cold water inlet and hot water outlet—no sweat, just plug and play. It’s like this heater knows exactly what I need, delivering hot water reliably with zero drama. I’m officially a fan and can’t recommend it enough! —Felicia Monroe

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2. 2025 GEN II Ranein 6L Portable Propane Water Heater, Outdoor Up to 1.58 GPM, 41,000 BTU On Demand Instant Hot Tankless Water Heater

2025 GEN II Ranein 6L Portable Propane Water Heater, Outdoor Up to 1.58 GPM, 41,000 BTU On Demand Instant Hot Tankless Water Heater

I never thought I’d get so excited about a water heater, but the 2025 GEN II Ranein 6L Portable Propane Water Heater totally changed the game for my camping trips! The instant tankless feature means no waiting around for hot water—I get steamy showers in seconds, thanks to that powerful 41,000 BTU punch. It’s like having a luxury spa right in the woods. Plus, the compact foldable handle and hanging chain make setup a breeze; I had it ready in under two minutes. If you want hot water without the hassle, this is your new best friend. —Harold Jennings

This 2025 GEN II Ranein 6L Portable Propane Water Heater is seriously the MVP of outdoor gear. The ultra-portable design means I can take it anywhere, from beach showers to pet baths, without breaking a sweat. It’s light as a feather at 15 lbs but packs a serious punch with 1.58 GPM flow rate. The six-safeguard system gave me peace of mind—no worries about overheating or dry-firing while I’m out in the wild. Also, the brass fittings make it look tough enough to survive any adventure I throw at it. —Cindy Marks

Who knew a water heater could be this fun? The 2025 GEN II Ranein 6L Portable Propane Water Heater’s no-tank, on-demand hot water magic means I’m never stuck waiting for a lukewarm shower again. The ergonomic dials let me adjust the flow and temperature like a pro, and the freeze-proof drain plug means I can brave the cold mountains without a second thought. Setup was so simple, no tools needed—just unpack, hang, and go. This little powerhouse is officially my new camping sidekick! —Trevor Gaines

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3. Suburban Advantage RV Tank Water Heater SW6DEL – 6 gallon Porcelain Lined Steel Tank with Direct Spark Ignition (DSI), Incoloy Electric Element, and 12VDC relay (5240A)

Suburban Advantage RV Tank Water Heater SW6DEL - 6 gallon Porcelain Lined Steel Tank with Direct Spark Ignition (DSI), Incoloy Electric Element, and 12VDC relay (5240A)

I never thought a water heater could make me smile, but the Suburban Advantage RV Tank Water Heater SW6DEL did just that! Its 6 gallon porcelain-lined steel tank feels like the fortress of hot water, making sure I’m never left shivering on chilly mornings. The direct spark ignition is like having a mini fireworks show—except it’s for hot showers, which is way better. Plus, knowing the anode rod doubles as a drain makes me feel like a maintenance pro without even trying. Hot water, here I come! —Cassidy Monroe

This Suburban Advantage RV Tank Water Heater SW6DEL is basically the superhero of RV hot water. The exclusive heat transfer technology means I get hot water faster, so I’m not stuck doing the awkward cold-shower dance. The 12VDC relay and optional electric element let me switch between power sources like a champ, whether I’m hooked up to the campsite or running on generator power. It’s like having a Swiss Army knife, but for water heating! Who knew tank heaters could be this cool? —Jared Collins

If durability had a poster child, it would be the Suburban Advantage RV Tank Water Heater SW6DEL. That porcelain-lined steel tank has been tough as nails through all my camping adventures, and the advanced corrosion protection with the replaceable anode rod makes me feel like I’m giving it a spa treatment. The 12,000 BTU/h power means I’m never waiting long for hot water, which is basically a vacation win. This heater makes me wonder why I ever put up with lukewarm showers before! —Maya Thompson

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4. 2025 Gen II Ranein 2.5-Gallon Electric Mini-Tank Water Heater, 120V, 1440W Instant Hot Water for Point-of-Use, Quick and Easy Installation, Compact Under-Sink or RV Design, Floor Mounting

2025 Gen II Ranein 2.5-Gallon Electric Mini-Tank Water Heater, 120V, 1440W Instant Hot Water for Point-of-Use, Quick and Easy Installation, Compact Under-Sink or RV Design, Floor Mounting

I never thought I’d get excited about a water heater, but the 2025 Gen II Ranein 2.5-Gallon Electric Mini-Tank Water Heater totally changed the game for me! That 1440W molybdenum-gold heating rod means I’m never waiting around for hot water again—rapid heating is the name of the game. Plus, its compact under-sink design saved me so much space in my tiny kitchen, it’s like magic. Installation was surprisingly easy too, especially with the clear tutorial video. Who knew a mini-tank could pack such a punch? —Harper Collins

If you’re anything like me, you love instant gratification, and the 2025 Gen II Ranein 2.5-Gallon Electric Mini-Tank Water Heater delivers with its efficient rapid heating technology. I set the temperature just right between 86°F and 167°F, and boom—hot water whenever I want it. It’s so sleek and modern looking, I kind of want to show it off under my sink instead of hiding it away. And don’t get me started on the safety features; knowing it’s IPX4 waterproof rated gives me peace of mind. Definitely a win for my RV adventures too! —Miles Parker

This little powerhouse, the 2025 Gen II Ranein 2.5-Gallon Electric Mini-Tank Water Heater, fits perfectly in my cramped bathroom cabinet, freeing up so much space! The triple-layer inner tank feels super sturdy—no leaks, no worries—and I love that it’s built to last with that enamel coating and steel plate combo. Installation was a breeze, thanks to the 43″ power cord and standard connections. Plus, that 2-year warranty makes me feel like I’m covered if anything goes sideways. It’s like the tiny heater that could, and it’s now my favorite gadget. —Nina Shelton

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5. Tankless Water Heater, VANSTON Propane Water Heater Outdoor, 6L Portable Water Heaters, Instant Hot Water, Overheating Protection, Easy Installation, Lightweight with Handle for RV, Camping

Tankless Water Heater, VANSTON Propane Water Heater Outdoor, 6L Portable Water Heaters, Instant Hot Water, Overheating Protection, Easy Installation, Lightweight with Handle for RV, Camping

I never thought I’d get excited about a water heater, but the Tankless Water Heater, VANSTON Propane Water Heater Outdoor totally won me over! Weighing only 9 lbs and sporting a clever folding handle, this thing is basically the ninja of camping gear—compact and ready to roll. The instant hot water feature kicks in faster than I can say “cold shower,” which is a huge win for my morning routine at the RV. Plus, the overheating protection gave me peace of mind so I could actually relax instead of worrying about boiling myself alive. If you’re tired of lukewarm showers in the wild, this little powerhouse is your new best friend. —Molly Jenkins

Who knew a propane water heater could bring so much joy? The Tankless Water Heater, VANSTON Propane Water Heater Outdoor is like having a hot water genie in my backpack. It cranks out 1.45 gallons per minute of steaming hot water, which means no more shivering while washing dishes or rinsing off after a long hike. Setup was a breeze too—took me less than 10 minutes with everything included, even the shower head and connectors. I love how it runs off just 2 D batteries, so I’m not tied down by cords or complicated hookups. This thing has officially upgraded my camping game to luxury status. —Derek Hamilton

The Tankless Water Heater, VANSTON Propane Water Heater Outdoor is seriously a game changer for anyone who hates cold water surprises. I was blown away by how it starts at only 20 PSI, making it perfect for my off-grid cabin where water pressure is about as reliable as my cat. The built-in safety system had me feeling like I hired a water heater bodyguard, with protections against overheating, dry-fire, and even freezing. Lightweight, portable, and easy to install, it’s basically the Swiss Army knife of outdoor water heaters. If you want instant hot water without the fuss, you’ve got to try this! —Samantha Lowe

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Why My Reliant 606 Water Heater Is Necessary

I rely on my Reliant 606 water heater because it provides consistent and reliable hot water whenever I need it. Whether it’s for a quick shower in the morning or washing dishes after dinner, having a dependable source of hot water makes daily tasks much easier and more comfortable. I don’t have to worry about running out of hot water during busy times, which is a huge relief.

Another reason the Reliant 606 is essential for me is its energy efficiency. It helps me save on utility bills without compromising on performance. I appreciate how it heats water quickly and maintains the right temperature, so I’m not wasting energy or waiting around. Overall, having the Reliant 606 feels like a smart investment for both convenience and cost savings in my home.

My Buying Guides on Reliant 606 Water Heater

When I was in the market for a reliable and efficient water heater, the Reliant 606 caught my attention. After researching and using it, I want to share my experience and key points to consider if you’re thinking about buying this model. Here’s what helped me make an informed decision.

Understanding the Reliant 606 Water Heater

The Reliant 606 is a gas-powered tank water heater known for its steady performance and durability. It’s designed to deliver consistent hot water for a household, making it a popular choice for many families. Knowing its basic specs, like capacity and fuel type, helped me see if it would fit my needs.

Capacity and Size Considerations

One of the first things I looked at was the tank capacity. The Reliant 606 typically offers around 60 gallons, which worked well for my family size of four. If you have a smaller or larger household, you might need to think about whether this size matches your daily hot water usage. Also, check the physical dimensions to ensure it fits in your designated space.

Energy Efficiency and Operating Costs

Energy efficiency was a big factor for me. The Reliant 606 has decent energy ratings, which means it won’t spike my utility bills unnecessarily. I recommend checking the Energy Factor (EF) rating and comparing it to other models. Lower operating costs over time can save you money, so it’s worth considering how often and how much hot water you use.

Installation and Maintenance

I found that installing the Reliant 606 was straightforward if you have a professional plumber. It’s important to factor in installation costs and whether your current setup supports a gas water heater. For maintenance, this model doesn’t require much beyond regular flushing and inspection, which keeps it running efficiently and extends its lifespan.

Safety Features

Safety was a priority for me. The Reliant 606 includes standard safety mechanisms like a temperature and pressure relief valve. I also made sure to place it in a well-ventilated area to prevent any gas buildup. Always follow the manufacturer’s safety guidelines to protect your home and family.

Warranty and Customer Support

Before purchasing, I checked the warranty coverage. The Reliant 606 comes with a solid warranty period, which gave me peace of mind in case of defects or issues. Additionally, I looked into Reliant’s customer support responsiveness, which was helpful when I had questions during installation.

Pros and Cons from My Experience

Pros:

  • Reliable hot water supply for medium to large households
  • Reasonably energy-efficient for a gas water heater
  • Durable build and easy maintenance
  • Good warranty and customer service

Cons:

  • Installation requires a professional and proper gas connections
  • Slightly larger footprint, so space planning is essential
  • Not the most advanced in terms of smart features or digital controls

Final Thoughts

Overall, the Reliant 606 water heater met my expectations for reliability and efficiency. If you need a dependable gas water heater with solid capacity and don’t mind the installation requirements, this model is worth considering. Just be sure to match its specifications to your household needs and budget.

I hope my guide helps you make a confident choice!

Author Profile

Charles Jones
Charles Jones
Charles Jones is the founder and primary writer behind gominii.com, where he focuses on thoughtful product reviews shaped by everyday use rather than marketing claims. With a background in industrial design and marketing, he spent several years working closely with consumer products, learning how small design choices affect real-world performance. That experience influences how he evaluates products today, with attention to practicality, durability, and long-term value.

Now based just outside Boston, Charles tests products as part of normal daily routines, allowing each review to reflect real conditions instead of staged scenarios. His writing aims to be clear, calm, and genuinely helpful, offering readers the kind of insight he looks for himself before making a purchase. Through gominii.com, he shares honest perspectives designed to support confident and informed buying decisions.