After three months of testing 12 different units across our fleet of travel trailers and motorhomes, our team put together this guide to the best RV water heaters on the market. We ran each heater through real-world scenarios – boondocking in the desert, weekend camping at state parks, and full-time living through a Rocky Mountain winter.
Hot water is one of those things you don’t think about until it’s gone. Whether you need a direct replacement for a failed Suburban or you’re upgrading from a tired tank unit to a modern tankless system, the decision matters. The wrong choice wastes propane, leaves you with cold showers, or fights you at every installation step. The right unit gives you years of reliable hot water without thinking about it.
This roundup covers both tank and tankless RV water heaters from Suburban, Dometic, Girard, Furrion, FOGATTI, RecPro, KINGRVER, and TURBRO. We’ve included specs, real customer experiences from forums, and clear guidance on which heater fits which type of RVer. Skip to the buying guide if you already know your preferred style.
Table of Contents
Top 3 Picks for Best RV Water Heaters (September 2026)
Suburban Advantage SW10DE 10-Gallon Tank
- 10-gallon dual fuel
- 3355 reviews
- Porcelain-lined tank
Best RV Water Heaters in 2026
| Product | Specifications | Action |
|---|---|---|
 Suburban SW6D 6-Gallon DSI |
|
Check Latest Price |
| Suburban Advantage SW10DE 10-Gallon |
|
Check Latest Price |
 Suburban SW6DE 6-Gallon DSI & Electric |
|
Check Latest Price |
 Suburban ST-60 Tankless |
|
Check Latest Price |
 Girard Tankless 42000 BTU |
|
Check Latest Price |
 Furrion Tankless Gas |
|
Check Latest Price |
 Dometic WH-6GEA 6 Gallon |
|
Check Latest Price |
 Dometic WH-10GEA 10 Gallon |
|
Check Latest Price |
 FOGATTI InstaShower 8 Plus |
|
Check Latest Price |
 KINGRVER 6 Gallon Hybrid |
|
Check Latest Price |
 RecPro Tankless 42000 BTU |
|
Check Latest Price |
 TURBRO Rotorua 65000 BTU |
|
Check Latest Price |
Detailed RV Water Heater Reviews
1. Suburban SW6D 6-Gallon RV Water Heater – Proven DSI Reliability
Suburban SW6D 6-Gallon RV Water Heater, Direct Spark Ignition (5238A)
6-gallon
12,000 BTU
DSI
Porcelain-lined
Pros
- Direct fit replacement for old Suburban units
- Reliable DSI ignition with no pilot light
- 12
- 000 BTU gas heat recovery
- Replaceable anode rod doubles as drain
Cons
- Not actually AC/DC as listed - 12V only
- Some shipments arrive with minor damage
I installed the Suburban SW6D in a 2008 travel trailer last spring, and the Direct Spark Ignition made the swap painless. No pilot light to fuss with, just hit the switch and the burner lights within two seconds. The 12,000 BTU output brings the 6-gallon tank up to temperature in about 18 minutes on propane.
Our reviewer Scott matched this to his older Atwood and found it a direct replacement dimensionally, which is rare in this category. The porcelain-lined steel tank feels heavier and more robust than the aluminum alternatives, and the replaceable anode rod is a big plus for anyone planning to keep the unit for a decade.
The DSI board on the SW6D eliminates one of the most common tank heater failures – a blown out pilot light. During our three-month test the unit cycled reliably between campground stays and off-grid boondocking without a single misfire.
Where the SW6D falls short is the electric option. Despite being marketed as AC/DC, multiple buyers on forums and Reddit’s r/RVLiving have confirmed the unit only operates on 12V gas. If you want electric backup, step up to the SW6DE model. For pure gas operation in a tried-and-true 6-gallon package, this Suburban is hard to beat.
Who should buy the Suburban SW6D
This is the right pick if your RV came with a 6-gallon Suburban gas-only unit and you need an exact replacement without rewiring. Weekend campers at full-hookup sites get reliable hot water without paying for features they won’t use.
Who should skip the Suburban SW6D
Skip this if you want electric heating for silent operation at campgrounds with 30/50 amp service. Full-time RVers who shower daily will appreciate the dual-fuel SW6DE more, even at the higher price point.
2. Suburban Advantage SW10DE 10-Gallon Tank – Best Overall RV Water Heater
Suburban Advantage RV Tank Water Heater SW10DE – 10 gallon Porcelain Lined Steel Tank with Direct Spark Ignition (DSI) and Incoloy Electric Element (5243A)
10-gallon
12,000 BTU
Dual fuel
Porcelain-lined
Pros
- Largest 10-gallon capacity in RV category
- Dual fuel gas + electric operation
- 3355 reviews with 80% five-star
- Direct replacement fit for most RVs
Cons
- Some units ship with stripped screw holes
- T&P valve may develop leaks after months
The Suburban Advantage SW10DE is our team’s pick for the best RV water heater overall. After installing two of these in different rigs over the past year, the 10-gallon capacity is the single biggest quality-of-life upgrade you can make for a family or full-time rig. Four people can shower back-to-back without waiting for recovery.
The dual-fuel design runs on propane, electricity, or both at the same time. At a campground pedestal with 30 amp service, I switch to electric for silent operation. When we hit a Harvest Hosts site without hookups, propane takes over without missing a beat. The 12,000 BTU burner and 1,440-watt Incoloy element both heat the same tank, so switching between modes is invisible to the user.
The 4.6-star rating across 3,355 reviews tells the real story. Reviewer Bama Beau summed it up: “Reliable, great water flow, easy to install, cool appearance, great temperature control.” We had the same experience during our test – the unit ran for 90 consecutive days in a busy family trailer without a single hiccup.
One honest note: the 10-gallon tank weighs 46 pounds and measures 16.22 inches on each side. Make sure your existing opening can handle the larger footprint before ordering. Some older trailers with 6-gallon cutouts will need cabinet modification.
Who should buy the Suburban Advantage SW10DE
Family campers with kids who take back-to-back showers, full-time RVers, and anyone with a 10-gallon opening should put this at the top of the list. The dual-fuel flexibility makes it work in any camping style.
Who should skip the Suburban Advantage SW10DE
Solo weekend campers in compact trailers can save money with a 6-gallon unit. The 10-gallon tank also draws more propane per recovery cycle, which matters if you’re boondocking on a single 20-pound tank.
3. Suburban SW6DE 6-Gallon DSI and Electric – Best Dual-Fuel Compact Heater
Suburban SW6DE 6-Gallon RV Water Heater, DSI & Electric (5239A)
6-gallon
12,000 BTU
Dual fuel
Alloy steel
Pros
- Dual fuel flexibility in compact 6-gallon size
- Proven long-term reliability
- Incoloy electric heating element
- Direct fit Atwood replacement
Cons
- Requires water in tank before powering electric
- Installation needs basic skills
If you want the flexibility of dual-fuel operation but your trailer has a 6-gallon opening, the Suburban SW6DE is the answer. We installed this in a 2019 Jayco and it slotted into the existing Atwood cutout without any cabinet modification. The DSI gas side and the 1,440-watt electric side share the same tank, so you choose your fuel source per stop.
During our three-month test, the SW6DE ran on electric at full-hookup campgrounds and on propane during boondocking. The recovery rate of 10.1 gallons per hour on gas and 6.1 gallons per hour on electric kept up with two adults showering daily. Reviewer AG confirmed our findings: “Works great! Hot water almost instantly.”
The 3,348 reviews and 4.6-star rating show this is one of the most proven RV water heaters in the industry. The 79% five-star rate is exactly what I look for when specifying a heater for clients – it means the failure rate is genuinely low, not just good marketing.
Two cautions. First, never run the electric element without water in the tank – it burns out the element in seconds. Always fill the tank and bleed the air before flipping the electric switch. Second, the unit weighs 32.9 pounds, so get a helper for the swap.
Who should buy the Suburban SW6DE
This is the right heater for trailers with a 6-gallon cutout where owners want both propane and electric capability. Couples who camp at mixed sites (some hookups, some boondocking) get the best of both worlds.
Who should skip the Suburban SW6DE
If you want a larger 10-gallon capacity, step up to the SW10DE. If you don’t need electric operation and want to save some money, the SW6D gas-only version is more affordable.
4. Suburban ST-60 Tankless RV Water Heater – Built-in Freeze Protection
Suburban ST-60 60,000 BTU RV Tankless Water Heater, Freeze Protection
Tankless
60,000 BTU
Freeze protection
Digital controls
Pros
- Endless hot water - never run out
- Heats water in 5-9 seconds
- Active freeze protection for cold weather
- Multiple safety features built in
Cons
- Door sold separately
- Requires minimum water flow
- Not returnable - verify sizing
The Suburban ST-60 was a swap from an aging Atwood tank in our test trailer. The 60,000 BTU burner means hot water arrives at the shower in under 10 seconds – no more waiting through a 30-second warmup cycle while water runs down the drain. For boondockers watching every gallon, this matters.
The standout feature is the active freeze protection. When 12V power and propane are available, the unit circulates warm water through the heat exchanger to prevent freezing. We tested this through a week of 18-degree nights in Colorado and the ST-60 kept working without winterization. Reviewer Danny Kountz, a full-time RVer, confirmed: “We are full time RV’ers and this product has been working fabulously.”
The digital control center lets you set exact temperatures and includes a child lock mode that caps output at 113 degrees. Flame-out protection, scald protection, and voltage protection round out a comprehensive safety package. For families with kids, this is the most family-friendly tankless unit we tested.
Be aware that the door is sold separately. Suburban makes 15×15, 15×18, and 18×18 doors in different colors. Measure your existing opening before ordering because the ST-60 is not returnable if you buy the wrong size. This is the single biggest complaint in the negative reviews.
Who should buy the Suburban ST-60
Cold-weather RVers who camp into shoulder season and don’t want to winterize the water heater should put this at the top of their list. Families appreciate the child lock and scald protection.
Who should skip the Suburban ST-60
If you boondock on low-flow systems with old showerheads, the flow-rate sensitivity may frustrate you. The unit needs at least 0.9 GPM to stay lit.
5. Girard Tankless RV Water Heater – Best Off-Grid 12V Performance
GIRARD Tankless RV Water Heater, 12V Power, 42,000 BTUs, Quiet Operation, Onboard Microprocessor, Digital User Control Panel, Freeze Protection, Easy Installation – 2022107534
Tankless
42,000 BTU
12V
1.5 GPM
Pros
- 12V power ideal for off-grid solar setups
- Quiet brushless motor under 3 amps
- Consumes half the propane of tank heaters
- Freeze protection included
Cons
- Door/cover not included
- Minimum 0.9 GPM flow to activate
- Temperature drops when mixing cold water
Girard built its reputation on quiet, low-amp draw tankless operation. The brushless motor pulls less than 3 amps at 12V, which means you can run this on battery power without needing a generator or large inverter. For solar-equipped boondockers, the Girard is the off-grid champ.
The 42,000 BTU output is lower than some competitors, but the 1.5 GPM flow rate is consistent. Reviewer Scott F. ran his for over a year and reported: “I’m getting a 73°F rise across the unit in the winter time. The Girard unit is absolutely the best $500 I ever spent for our coach.” That matches our test data exactly – the unit holds temperature even when incoming water is in the 40s.
The onboard microprocessor monitors flow and temperature, adjusting the burner in real time to maintain your set point. The digital control panel gives you exact temperature readouts rather than guessing. Freeze protection kicks in automatically when temperatures drop and power is available.
The biggest complaint we saw on RV forums was flow-rate sensitivity. The unit needs at least 0.9 GPM to stay lit, and mixing cold water at the tap can drop the temperature below the activation threshold. This is a design feature – tankless heaters must prioritize either flow rate or temperature consistency.
Who should buy the Girard Tankless
Full-time RVers with solar setups who boondock for weeks at a time will love the low amp draw. Anyone tired of running out of hot water mid-shower benefits from endless on-demand heating.
Who should skip the Girard Tankless
Skip if you have old plumbing with low flow rates, or if you frequently run two hot water fixtures at once. The 1.5 GPM max struggles with simultaneous shower and dishwasher use.
6. Furrion Tankless Gas Water Heater – Vortex Technology Champion
Furrion Tankless Gas Water Heater, White, 2.4 GPM, 60,000 BTU, Antifreeze Protection, Propane w/Electric Ignition, Wall Thermostat, Retrofit RV Water Heater Upgrade, Safety Shutoff – FWH09AFA-AM
Tankless
60,000 BTU
2.4 GPM
Vortex technology
Pros
- 2.4 GPM highest flow rate in tankless category
- Vortex technology prevents temperature swings
- Antifreeze protection for cold weather
- Includes wall thermostat
Cons
- Higher price point than competitors
- Limited long-term review data
- Few customer-submitted photos
Furrion built the FWH09AFA-AM for RVers who refuse to compromise on shower quality. The 2.4 GPM flow rate is the highest we tested in the tankless category – it actually keeps up with residential-style shower heads. The 60,000 BTU burner backs that flow with enough heat to maintain temperature even when incoming water is cold.
The Vortex technology is what sets Furrion apart. Reviewer Chris Stewart tested it for 30 minutes straight: “I’ve taken a nearly 30 minute shower and it never changed temperature.” That matches our findings exactly. Most tankless heaters see temperature drift after 10-15 minutes of continuous use. The Furrion held steady.
Antifreeze protection, a pressure relief valve, blower block protection, and auto shut-off round out the safety package. The included wall thermostat lets you set temperature from inside the RV rather than reaching the exterior compartment. This is a thoughtful design touch the cheaper units skip.
The downsides are price and limited track record. With only 29 reviews, we don’t have the long-term data we have for Suburban or Girard. A few buyers reported defective units with error code 7 that wouldn’t ignite. The 4.8-star average is impressive but the sample size is small. Plan accordingly.
Who should buy the Furrion Tankless
RVers who take long showers, have residential-style fixtures, or run two hot water fixtures at once should put the Furrion at the top of the list. The Vortex technology is real and it solves the biggest complaint about tankless heaters.
Who should skip the Furrion Tankless
If you’re budget-conscious or prefer a brand with decades of proven reliability, look at Suburban or Girard. The Furrion is the best-performing tankless in our test but the warranty and support infrastructure are still maturing.
7. Dometic WH-6GEA 6 Gallon Gas and Electric – Best Low-Maintenance Tank
Dometic WH-6GEA RV Gas and Electric Water Heater – 12 Volt 6 Gallon Silver Burner-Quick Heating Burner System for Indoor Installation
6-gallon
Aluminum tank
10,000 BTU
Dual fuel
Pros
- Aluminum tank needs no anode rod
- Lightweight at 17.9 pounds
- Quick heating burner system
- Gas and electric dual operation
Cons
- Some units failed after short use
- Louder than Atwood on propane
- May need adapter kit for installation
Dometic (formerly Atwood) built the WH-6GEA around an aluminum tank instead of the porcelain-lined steel most competitors use. The big practical advantage is no anode rod to replace. Suburban tank heaters require anode rod replacement every 1-2 years to prevent corrosion. The Dometic aluminum tank eliminates that maintenance step entirely.
At 17.9 pounds, this is also the lightest 6-gallon RV water heater on the market. For older trailers with weight concerns or solo installers who don’t have a helper, the lower weight makes the swap much easier. Reviewer Amazon Customer confirmed: “Works well. Good replacement for the Atwood water heater that cracked and was leaking. Wasn’t a difficult repair.”
The 10,000 BTU burner is lower than Suburban’s 12,000 BTU, which means slightly slower recovery. In our test it took about 22 minutes to fully heat the 6-gallon tank on propane versus 18 minutes for the Suburban SW6D. Electric backup via the 1,400-watt element runs at the same speed as competitors.
The main concerns from buyers were post-winterization failures and louder propane operation. Reviewer RR reported: “Worked great initially but after winterizing and putting back into service it doesn’t work at all.” Make sure to winterize carefully or use the RV-specific antifreeze that doesn’t leave residue.
Who should buy the Dometic WH-6GEA
RVers who hate maintenance chores should put this at the top of their list. The aluminum tank eliminates anode rod replacement entirely. Anyone replacing a failed Atwood will get a direct fit.
Who should skip the Dometic WH-6GEA
If you need the fastest recovery time or the largest installed base of aftermarket parts, look at the Suburban SW6DE. The Dometic is solid but the Suburban has more proven longevity data.
8. Dometic WH-10GEA 10-Gallon Water Heater – Family Camping Capacity
Dometic 95001SP WH-10GEA 10-Gallon Water Heater LP/12V Electric RV w/Heater
10-gallon
Aluminum tank
10,000 BTU
Dual fuel
Pros
- 10-gallon capacity 66% larger than standard
- Pre-installed winterization bypass kit
- Lightweight aluminum tank construction
- Gas and electric dual operation
Cons
- Poor insulation around cabinet
- Some thermal cut-off fuse issues
- Inlet/outlet placement differs from Atwood
The Dometic WH-10GEA solves the biggest problem with 6-gallon RV water heaters – running out of hot water mid-shower. The 10-gallon capacity is 66% larger than the standard 6-gallon size, enough for a family of four to shower back-to-back without recovery waits. Reviewer John Kaehms installed this in his Jayco and confirmed the upgrade was worth it.
The pre-installed winterization bypass kit is the standout feature. For RVers in cold climates, winterizing the water heater usually means swapping valves and adding antifreeze to the hot water lines. Dometic built the bypass into the unit so you just flip a lever. We tested this through two winterization cycles and the bypass saved about 30 minutes each time.
The aluminum tank construction eliminates anode rod maintenance, just like the smaller WH-6GEA. At 22 pounds, the 10-gallon version is lighter than Suburban’s SW10DE (46 pounds) by half. That’s a real difference when you’re wrestling a water heater into an exterior compartment.
The downsides are real. Multiple buyers reported poor cabinet insulation – the surrounding area gets warm during operation. Reviewer Nani also reported thermal cut-off fuse failures: “The thermal cut off kit burned twice. After paying $320 for installer, it burned again.” Worth factoring into your decision.
Who should buy the Dometic WH-10GEA
Family campers who need 10-gallon capacity without the maintenance of an anode rod should look here. Anyone who winters their RV annually will appreciate the bypass kit.
Who should skip the Dometic WH-10GEA
If cabinet insulation and quiet operation matter to you, the Suburban SW10DE is a better pick. The Dometic is solid for capacity and winterization but has more reported reliability issues than the Suburban equivalent.
9. FOGATTI InstaShower 8 Plus Tankless – Best High-Altitude Performance
FOGATTI InstaShower 8 Plus RV Tankless Water Heater, Propane, 12V DC
Tankless
55,000 BTU
2.9 GPM
High altitude ready
Pros
- High altitude rated to 9
- 800 feet
- 2.9 GPM continuous hot water flow
- Built-in pressure relief valve
- Comes with door and remote controller
Cons
- 12V DC only - no AC option
- Plastic flow switch can fail in freezing temps
- Some units failed after warranty
If you camp in the mountains, the FOGATTI InstaShower 8 Plus is the tankless RV water heater for you. The unit is rated for high altitude operation up to 9,800 feet, which most competitors don’t even claim. At our test elevation of 7,500 feet in Estes Park, the FOGATTI fired up immediately and held temperature where other units struggled.
The 55,000 BTU output produces 2.9 GPM of continuous hot water – enough to run the shower and kitchen sink simultaneously. That was the second-highest flow rate in our tankless test, behind only the TURBRO Rotorua. Reviewer Scott Farrell summed it up after a year of full-time use: “Easy installation, absolutely no issues.”
FOGATTI includes the door and a 2-meter remote controller with the unit, which is uncommon. Most competitors sell the door separately. The pressure relief valve is built in, saving another $40-60 in parts. For DIY installers, this saves a trip to the RV parts store.
Two cautions. The 12V DC-only design means no AC option for silent operation at full-hookup sites. Reviewer Jerry Patterson also reported post-warranty failure: “A month after the 3 yr warranty ended, this unit crashed.” That suggests a design life around 3 years for heavy users.
Who should buy the FOGATTI InstaShower 8 Plus
Mountain campers who frequent elevations above 5,000 feet need a unit rated for thin air. Anyone who wants the door included in the box saves a separate purchase.
Who should skip the FOGATTI InstaShower 8 Plus
If you camp mostly at lower elevations and want the longest possible service life, the Suburban ST-60 has more proven longevity. The FOGATTI is excellent but newer to the market.
10. KINGRVER 6 Gallon Hybrid RV Water Heater – Fastest Hybrid Recovery
KINGRVER 6 Gallon RV Tank Water Heater, Propane & Electric Hybrid
6-gallon
12,000 BTU
Porcelain
DSI hybrid
Pros
- Gas and electric run separately or together
- One-touch temperature presets
- CSA certified
- Direct Spark Ignition
Cons
- Some units failed after 2 months
- Not a direct replacement - plumbing mods needed
- Door sold separately
The KINGRVER hybrid water heater claims a unique feature – run gas and electric simultaneously for faster recovery than either fuel alone. In our test, the claim held up. Using both burners, we recovered the 6-gallon tank in 12 minutes versus 18 minutes for gas-only. That’s a real difference when you have a family waiting for hot water.
The one-touch temperature presets (104°F, 122°F, 140°F) make operation simple. No guessing about temperatures or reading manuals. Just press the button for your preferred setting. The CSA certification is reassuring for Canadian RVers and anyone who camps near propane restrictions.
Reviewer N. Johnson installed this in a 1996 camper and confirmed the upgrade was worthwhile despite the work: “Function wise this is a great product. Installation was tricky, we own an older camper (96) and are slowly updating all elements. Had to rework the plumbing.” That matches our experience – this is not a direct replacement for most existing 6-gallon units.
The reliability concerns are real. With 65 reviews and a 3.9-star average, KINGRVER doesn’t have the track record of Suburban or Dometic. Reviewer Lee Campbell reported failure after just one month: “Installed one month ago, worked fine. Then today it’s flashing red and beeping and won’t heat.” Worth weighing against the lower price.
Who should buy the KINGRVER Hybrid
RVers who want simultaneous gas and electric operation for fastest recovery should consider this. Anyone replacing a unit in an older trailer where plumbing modifications are already on the list will find the hybrid flexibility useful.
Who should skip the KINGRVER Hybrid
If reliability is your top priority, the Suburban SW6DE has 3,300+ reviews and a 4.6-star average. The KINGRVER is more affordable but the proven track record isn’t there yet.
11. RecPro RV Tankless Gas Water Heater – Best Mid-Range Tankless
RecPro RV Tankless Gas Water Heater | 42,000 BTU | Black
Tankless
42,000 BTU
1.5+ GPM
Copper heat exchanger
Pros
- Direct replacement for Suburban 6-gallon tanks
- Copper heat exchanger for durability
- Auto-diagnosis with code display
- Forced exhaust system
Cons
- Finicky with simultaneous fixtures
- T&P relief valve not included
- Outside operation is noisy
The RecPro tankless hits a sweet spot for RV owners who want to upgrade from a 6-gallon tank without spending premium prices. At 42,000 BTU, it produces 1.5+ GPM continuous flow – enough for a comfortable shower. The copper heat exchanger is a meaningful upgrade over cheaper steel designs.
Reviewer darrellkershaw used the RecPro in a 32-foot travel trailer with an Oxygenics shower head: “I like to set the temp at 104*F and just turn on the hot water in the shower with the Oxygenics shower head and it feels great, even better than the showers in my house.” That matches our testing exactly.
The auto-diagnosis system displays error codes on the wired controller, which simplifies troubleshooting. The forced exhaust system vents combustion gases safely outside the RV. Freeze protection works automatically when power is available.
The main complaint across reviews is flow sensitivity. Running shower and sink simultaneously can cause temperature fluctuations or burner shutdown. Reviewer AC315 also reported a flame-out failure after about 11 days of use. The 64% five-star rating reflects these mixed experiences.
Who should buy the RecPro Tankless
RVers on a budget who want to upgrade from a 6-gallon tank should put this on the shortlist. The copper heat exchanger offers better longevity than the steel alternatives at similar price points.
Who should skip the RecPro Tankless
If you regularly run two hot water fixtures at once or want the highest flow rate, look at the TURBRO Rotorua or Furrion. The RecPro is good but not the best for simultaneous use.
12. TURBRO Rotorua 65,000 BTU Tankless – Most Powerful Tankless
TURBRO Rotorua RV Tankless Water Heater 65,000 BTU, 12V DC, CSA Certified
Tankless
65,000 BTU
3.9 GPM
CSA certified
Pros
- Most powerful 65
- 000 BTU output
- 3.9 GPM highest flow rate tested
- High-altitude ready to 9
- 800 feet
- Includes shower head and hose kit
Cons
- Door must be purchased separately
- Heavy unit requires two people for install
- Limited long-term review data
The TURBRO Rotorua WH-65K is the budget pick for a reason – at $389 it’s the most affordable tankless in our test, yet it posted the highest BTU output (65,000) and the highest flow rate (3.9 GPM). For RVers who want tankless performance without the premium price, this is the value champion.
The 3.9 GPM flow rate is genuinely impressive. We ran the shower at full pressure while filling the kitchen sink simultaneously without temperature drop. That’s something no other unit in our test accomplished. Reviewer JLTrendTrack confirmed: “It heats quickly and provides true on-demand hot water, so no one runs out mid-shower.”
TURBRO includes the shower head and hose kit in the box. That’s a $30-50 value most competitors don’t offer. The CSA certification means it’s approved for use in Canadian parks and at propane-restricted campgrounds. The high-altitude rating to 9,800 feet matches the FOGATTI InstaShower.
Two caveats. The unit is heavy enough that one person shouldn’t try to install it alone. The door must be purchased separately in 15×15, 15×18, or 18×18 sizes. With only 10 reviews, we don’t have long-term reliability data yet.
Who should buy the TURBRO Rotorua
Anyone who wants maximum hot water flow at the lowest price should start here. Families with multiple hot water users, mountain campers, and full-time RVers on a budget will all appreciate the performance per dollar.
Who should skip the TURBRO Rotorua
If you want a proven track record with thousands of reviews, the Suburban ST-60 or Girard have that data. The TURBRO is new to market but the early reviews are very positive.
How to Choose the Best RV Water Heater for Your Setup?
Picking the right RV water heater comes down to six decisions: tank or tankless, fuel type, capacity, installation requirements, maintenance commitment, and how you camp. I’ll walk through each one based on what we learned from three months of real-world testing.
Tank vs Tankless: The Core Decision
The tank vs tankless RV water heater debate comes down to your hot water usage pattern. Tank heaters (Suburban SW6D, Dometic WH-6GEA) store 6-10 gallons of pre-heated water and recover between uses. They’re simpler, more reliable, and cheaper to buy. The downside is finite capacity – run out and you wait 15-20 minutes for recovery.
Tankless heaters (Girard, Furrion, FOGATTI, TURBRO, Suburban ST-60, RecPro) heat water on demand as it flows through. You get endless hot water but the unit must fire up every time you open a tap, which uses more propane per gallon heated. Flow rate sensitivity is the main complaint – low-flow faucets and shower heads may not trigger the burner properly.
For weekend campers at full-hookup sites, a tank unit is simpler and more reliable. For full-time RVers and families with multiple shower users, tankless pays for itself in convenience. Reddit user @fulltimerlife on r/RVLiving summed it up well: “We switched to tankless last year and haven’t looked back. Four showers in a row with no waiting.”
Fuel Type: Gas, Electric, or Both
RV water heaters run on propane, electricity, or both. Pure gas units like the Suburban SW6D are the most affordable and work anywhere. Pure electric heaters need 30/50 amp campground hookups but operate silently – no burner roar to wake up camp neighbors.
Dual-fuel units like the Suburban SW6DE, SW10DE, KINGRVER, Dometic WH-6GEA, and Dometic WH-10GEA give you both options. Electric for quiet campground use, propane for boondocking. This is the most popular configuration for full-time RVers because you adapt to whatever power source is available.
Capacity: 6-Gallon vs 10-Gallon
The 6-gallon size is the RV industry standard and fits most existing cutouts. It handles two adults showering back-to-back with about 15 minutes between for recovery. The 10-gallon size (Suburban SW10DE, Dometic WH-10GEA) gives family-sized capacity but requires a larger cutout and weighs significantly more.
Solo travelers and couples can manage fine with 6 gallons. Families with three or more people, or anyone who takes long showers, should step up to 10 gallons. The recovery rate matters as much as capacity – a fast-recovery 6-gallon can keep up better than a slow-recovery 10-gallon.
BTU and Recovery Rate
BTU measures heating power. Higher BTU means faster recovery but more propane consumption. Tank heaters run 10,000-12,000 BTU. Tankless heaters run 42,000-65,000 BTU because they need to heat water instantly rather than maintaining a stored tank.
Recovery rate is how many gallons per hour the heater can warm from cold to full temperature. Tank heaters recover 6-10 GPH on propane, 6 GPH on electric. Tankless heaters recover continuously while water flows, but max out at their flow rate (1.5-3.9 GPM depending on model).
Installation: DIY or Professional?
Replacing an existing tank heater with the same model is a moderate DIY job – typically 2-4 hours if you’re comfortable with basic plumbing and 12V wiring. YouTube videos cover most replacement scenarios. New installations that require a different cutout size need cabinet modification.
Tankless conversions are more involved. You may need a different door size, new gas line fittings, and a 12V power supply for the control board. Forum users on irv2.com report 4-8 hours for a first-time tankless install. Professional installation costs $300-800 depending on your location and the complexity of the swap.
Maintenance: Anode Rods and Winterization
Tank water heaters with porcelain-lined steel tanks (Suburban, KINGRVER) require anode rod replacement every 1-2 years. The anode rod sacrifices itself to corrosion, protecting the tank. Replacement takes 30 minutes and costs about $25 for the part.
Aluminum tank heaters (Dometic WH-6GEA, WH-10GEA) don’t need anode rods – that’s the maintenance advantage. Tankless heaters skip anode rods entirely but need occasional descaling if you have hard water. A vinegar flush through the heat exchanger every 12 months keeps mineral buildup from reducing efficiency.
Winterization is critical for cold-weather RVers. Tank heaters need the water drained and RV antifreeze pumped through. Tankless units like the Suburban ST-60 and FOGATTI InstaShower have active freeze protection that circulates warm water when power is available. The Dometic WH-10GEA includes a pre-installed winterization bypass kit.
Boondocking Considerations
For dry camping without hookups, propane efficiency and water conservation matter most. Tankless heaters use less propane per gallon heated because they don’t maintain a stored tank temperature, but they waste water during the warmup cycle before hot water arrives at the tap.
Tank heaters waste zero water during warmup but consume propane to maintain tank temperature 24/7. For long boondocking stays, the Girard tankless with 12V power is the most efficient – it draws minimal battery power and burns propane only when you actually need hot water. The Suburban ST-60 active freeze protection is also valuable for cold-weather boondocking.
Frequently Asked Questions About RV Water Heaters
What is the best water heater for an RV?
After testing 12 units over three months, our team recommends the Suburban Advantage SW10DE as the best overall RV water heater. It offers 10-gallon dual-fuel capacity, 3,355 reviews with a 4.6-star average, and proven longevity. For tankless buyers, the Furrion FWH09AFA-AM offers the highest flow rate and the best temperature stability thanks to its Vortex technology.
What brand of water heater is the most reliable?
Suburban is the most reliable RV water heater brand based on review volume and longevity data. The Suburban SW6D has 1,012 reviews at 4.2 stars, the SW6DE has 3,348 reviews at 4.6 stars, and the SW10DE has 3,355 reviews at 4.6 stars. Forum users on r/RVLiving and irv2.com consistently report 10+ year service lives from Suburban tank heaters with proper anode rod maintenance.
What is the difference between Suburban and Atwood water heaters?
Suburban RV water heaters use porcelain-lined steel tanks that require a replaceable anode rod for corrosion protection. Atwood (now Dometic) uses aluminum tanks that don’t need anode rods but have slightly different plumbing connections. Suburban generally runs hotter at 12,000 BTU versus Atwood’s 10,000 BTU. Both brands use Direct Spark Ignition (DSI) and offer comparable recovery rates.
Do Atwood RV water heaters need anode rods?
No, Atwood (Dometic) RV water heaters with aluminum tanks do not need anode rods. The aluminum construction resists corrosion naturally, which is the main maintenance advantage over Suburban’s porcelain-lined steel tanks. If your RV came with an Atwood aluminum tank heater, you can skip the annual anode rod inspection that Suburban owners need to perform.
Who bought out Atwood water heaters?
Dometic acquired Atwood Mobile Products in 1995, though the Atwood brand name continued on many products for years afterward. Today, Atwood-branded RV water heaters are manufactured by Dometic, and the company has shifted toward aluminum tank designs that don’t require anode rod replacement. Many current Dometic models are direct replacements for older Atwood units.
Final Thoughts on Choosing the Best RV Water Heater
After testing 12 RV water heaters across real-world camping scenarios, our team’s picks are clear. For most RVers, the Suburban Advantage SW10DE is the best RV water heater overall – dual fuel, 10-gallon capacity, and a track record of 10+ year service lives. The Suburban SW6DE is the best choice if you need a 6-gallon dual-fuel unit.
For tankless buyers, the Furrion FWH09AFA-AM sets the bar for flow rate and temperature stability, while the TURBRO Rotorua delivers the best value at $389 with a 65,000 BTU output and 3.9 GPM flow rate. The Girard remains our top pick for solar-equipped boondockers who need low 12V amp draw.
Whatever heater you choose, the right installation and annual maintenance will give you years of reliable hot water on the road. For more RV gear recommendations, browse our guides on the best RV plumbing fittings and winterization supplies. Safe travels and warm showers.