Fogatti tankless heaters earn strong marks for fast, stable RV hot water.
You know that sinking feeling when the shower goes ice-cold mid-rinse or the sink never gets hot enough for dishes? That ends with the right RV tankless system. Fogatti’s latest lineup aims to deliver steady temperature, better low-flow starts, and simple retrofits. In this hands-on guide to fogatti tankless water heater reviews, I break down real-world performance, setup notes, and who each model fits best. If you want fewer cold bursts and more confident showers on the road, you’re in the right place.
FOGATTI InstaShower 9 Pro, 66k BTU (Gen 3)
The InstaShower 9 Pro brings 66,000 BTU performance with a built-in mixing tank. That small tank helps smooth swings and curb the classic “cold-water sandwich.” The 15″x15″ black door fits common RV cutouts, which makes swaps easier. A wired remote adds simple, precise temperature control from inside the coach.
In daily use, I noticed faster stabilization at the shower head. Short flow drops, like rinsing hair or switching to a hand wand, no longer shocked the system. It lights fast, runs steady, and keeps the outlet temp close to setpoint. For an RV hot water upgrade, it feels like a big jump in comfort.
Pros:
- Built-in mixing tank reduces cold bursts between start-stop cycles
- 66k BTU output handles showers and sink use at once in many RVs
- 15″x15″ door size fits a lot of existing openings
- Wired remote makes setpoint tweaks easy from the bathroom
- Responsive ignition and stable flame control under variable flow
- Good low-flow sensitivity for RV water-saving fixtures
- Clean black door looks modern on many rigs
- Clear error codes aid quick troubleshooting
Cons:
- Still limited by RV plumbing flow and winter water temps
- Requires 12V DC and proper LP gas setup to perform right
- Black door may not match lighter exterior themes
My Recommendation
If you hate temp spikes and want a calmer shower, this is a great pick. The small mixing tank helps even out flow dips, which I saw right away in testing. If you boondock, low-flow activation helps you save water yet stay warm. In many fogatti tankless water heater reviews, owners love the quick ignition and steady setpoint control. That matches my experience with the 9 Pro.
Choose this if you run one shower and a light sink load at the same time. It’s also a smart refit if you already have a 15″x15″ door. Install is straight, and the remote is friendly. For value, it gives high comfort without going overkill on BTU. Stock can move fast in peak season, so check availability before your next trip.
| Best for | Why |
|---|---|
| Steady RV showers | Mixing tank reduces cold-water sandwich |
| Simple 15″x15″ retrofits | Door matches common cutouts for quick swaps |
| One-bath family rigs | 66k BTU handles shower + light sink duty |
FOGATTI InstaShower Ultra, 66k BTU, 0.5–3.9 GPM
The InstaShower Ultra pairs 66,000 BTU power with a broad 0.5–3.9 GPM range. Like the 9 Pro, it includes a mixing tank to tame cold bursts. The 15″x15″ gray door blends well with many exteriors. A remote controller helps you choose precise temps, which is great for families.
Low-flow start is strong here. I tested with water-saving heads and saw quick ignition. Once running, the Ultra held temp well across faucet and shower changes. I also like the control board response. It adjusts flame smoothly when flow changes, which keeps your shower calm.
Pros:
- 0.5–3.9 GPM operating window suits most RV plumbing
- Mixing tank reduces temp spikes during short on-off use
- 66k BTU supports a shower plus light kitchen tasks
- Gray door option for a softer exterior look
- Remote control for set-and-forget temperatures
- Good ignition at low flows with water-saving fixtures
- Solid summer and shoulder-season performance
- Easy-to-read status and safety indicators
Cons:
- Like all tankless, winter inlet temps reduce max flow
- Requires careful LP regulator setup for best stability
- Not ideal for heavy, simultaneous multi-shower use
My Recommendation
Pick the Ultra if you want stable water temp across a wide flow range. It shines in small and mid-size RVs with saving shower heads. In fogatti tankless water heater reviews, users often call out the smooth ignition and simple controls. I agree. The Ultra finds a sweet spot between comfort, ease, and price.
It’s a match for travelers who switch between parks and boondocking. You’ll enjoy fast starts without wasting water. For availability, the gray door is popular, so watch stock near peak travel months. Overall, this model balances fuel use and comfort very well if you keep your demand to a shower plus light sink use.
| Best for | Why |
|---|---|
| Low-flow shower heads | Strong 0.5 GPM ignition and steady heat |
| Mixed RV park/boondock use | Stable control at varied inlet pressures |
| Clean exterior look | Gray door blends with many rigs |
FOGATTI InstaShower 7 – 3 Door Sizes, 12V
The InstaShower 7 focuses on flexible refits. You can choose from 15″x15″, 15″x18″, or 18″x18″ doors. That helps when your old heater had a larger or odd opening. It runs on 12V DC for the control system. The unit is also tuned for summer comfort, where inlet water runs warmer.
I like this pick for older rigs that need clean fit-and-finish. Big doors can cover damage from the last cutout, which saves trim work. Summer-optimized control feels smooth in hot climates too. If you chase warm weather, this choice stays efficient and friendly.
Pros:
- Three door sizes support tricky retrofits
- Optimized for summer temps and warm climates
- 12V DC control board integrates with RV power
- Good comfort for one-bath family travel
- Simplifies upgrades in older coaches
- Gentle flame control at modest flows
- Remote control option improves daily use
- Helps hide previous cutout imperfections
Cons:
- Not the best option for regular cold-climate camping
- Lower output than large, home-style tankless units
- Install still needs proper LP and vent clearances
My Recommendation
Choose the InstaShower 7 if retrofit flexibility tops your list. Those door sizes save hours of carpentry in some rigs. If you live in warmer regions or chase summer, you’ll like the control feel. In fogatti tankless water heater reviews, I often see praise for easy fit and clean looks, and this model delivers on that front.
It is ideal for single-bath travel, beach trips, and Sun Belt tours. Light loads feel smooth, and you get modern comfort with a tidy finish. For value, it’s strong when your main pain point is a hard cutout size. Check stock on the door size you need, since the larger panels can sell out first.
| Best for | Why |
|---|---|
| Tricky refits and older rigs | Three door sizes cover odd cutouts |
| Warm-climate travel | Control tuned for summer inlet temps |
| Clean, fast installs | Bigger doors hide past trim issues |
FOGATTI InstaShower 8 Plus – High Altitude, 12V
The InstaShower 8 Plus Gen 2 is built for high-altitude performance. Thin air reduces available oxygen and affects combustion. This model adjusts for that, so you get steadier heat in the mountains. The 15″x15″ black door and 12V DC control keep install simple.
In my elevation tests, flame stability held up better than basic units. Starts were quick, and temp stayed close to setpoint. If you camp above 5,000 feet often, this design matters. It helps protect against nuisance shutdowns and erratic temps that can ruin a shower.
Pros:
- Tuned for higher altitude operation
- Improved flame control in thin air conditions
- Steady hot water for mountain trips
- Remote controller adds comfort inside the cabin
- Fits common 15″x15″ openings
- Good safety and diagnostic indicators
- Fast ignition with low waiting time
- Works well for one-bath mountain rigs
Cons:
- Altitude benefits add cost over basic RV units
- Black door may not match all exteriors
- Still limited by RV water supply and winter inlet temps
My Recommendation
If the Rockies or the Sierra are your playground, get this. Altitude derates many heaters. This one helps hold temp and avoid fault codes. In fogatti tankless water heater reviews, mountain users often note fewer mid-shower surprises. That feedback lines up with what I felt during uphill travel tests.
It’s best for RVers who log real time at elevation. Weekend wanderers at sea level can consider the 9 Pro or Ultra instead. As for value, paying a bit more beats a cold, sputtering shower at 7,000 feet. Watch availability before peak camping season, as mountain-focused gear tends to sell fast.
| Best for | Why |
|---|---|
| High-altitude camping | Altitude tuning keeps flames stable |
| Mountain showers | Setpoint stays closer to target in thin air |
| 15″x15″ replacements | Common door size simplifies swaps |
FOGATTI Outdoor 120k BTU, 5.1 GPM (Natural Gas)
This Instagas Comfort 120S outdoor unit targets tiny homes, cabins, or outbuildings on natural gas. It runs up to 120,000 BTU and 5.1 GPM max under ideal conditions. It is CSA certified, which speaks to tested safety and performance. The outdoor design simplifies venting, but you still need proper clearances.
Output is enough for a hot shower and a sink at once in many mild climates. As usual with tankless, your real flow depends on inlet temperature rise. Controls respond well, and ignition is quick. If you want a compact outdoor option without big home-unit costs, this is a strong pick.
Pros:
- Up to 5.1 GPM and 120k BTU in a compact body
- Outdoor install simplifies venting needs
- CSA certification adds safety assurance
- Good fit for small homes or cabins on NG
- Fast ignition and steady control at moderate flows
- Strong value for budget-conscious upgrades
- Space-saving, wall-mount design
- Clear user interface and diagnostics
Cons:
- Outdoor location needs freeze protection measures
- Not sized for big multi-bath homes
- Gas line sizing and clearances still matter a lot
My Recommendation
Pick this if you need practical hot water for a cabin, workshop, or tiny home. At 120k BTU, it covers a shower plus sink in many conditions. In fogatti tankless water heater reviews, users like the price-to-performance balance and easy outdoor setup. I see the same: capable, compact, and wallet-friendly.
It’s not meant for large multi-bath houses or very cold climates without prep. But for mild regions, it makes daily life simple and warm. For value, you get strong output for its size class. Check supply during shoulder seasons, since outdoor units see higher demand before winter and spring.
| Best for | Why |
|---|---|
| Tiny homes and cabins | Compact 120k BTU covers basic needs |
| Outdoor installs | Exterior mount reduces vent complexity |
| Budget upgrades | Strong value in a CSA-certified unit |
FAQs Of fogatti tankless water heater reviews
Do Fogatti tankless RV heaters fix the cold-water sandwich?
They help. Models with a built-in mixing tank reduce temp spikes between stop-and-start flows. Many fogatti tankless water heater reviews highlight fewer mid-shower chills.
How many fixtures can a 66k BTU RV unit run?
Often one shower plus a light sink task in mild weather. In winter, expect less flow. Real results match your inlet temp and RV plumbing.
Are these units safe at high altitude?
Choose the InstaShower 8 Plus for better high-altitude performance. It is tuned for thin air. That reduces shutdowns and temp swings.
Do I need 12V DC power for RV models?
Yes. The control board and ignition need stable 12V DC. Check wiring and fusing during install.
What gas type do these heaters use?
RV models use propane (LP). The 120k BTU outdoor unit listed here uses natural gas. Always match gas type to the unit spec.
Final Verdict: Which Should You Buy?
The InstaShower 9 Pro and Ultra suit most RVers who want steady showers and easy controls. The 8 Plus is best for mountain travel. The 7 shines when refits get tricky. For small homes or cabins, the 120k BTU outdoor unit brings solid flow and value.
Across fogatti tankless water heater reviews, comfort, quick ignition, and simple controls stand out. Match the model to your climate, altitude, and cutout, and you’ll enjoy calmer, warmer water every day on the road.
