InstaShower
Engineered for extreme cold & altitude.
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10 products
BTU at a Glance — What Each Tier Delivers
| 48K BTUInstaShower 7 | 55K BTUInstaShower 8 Plus | 66K BTUInstaShower 9 Pro | 66K BTUInstaShower Ultra | |
|---|---|---|---|---|
| Winter (41°F inlet) | 105°F @ 0.8 GPM (needs flow reduction) |
105°F @ 1.2 GPM stable output |
120°F+ @ 1.2 GPM extra margin |
120°F+ @ 1.2 GPM extra margin |
| Fixtures (max GPM) | 2 | 3 | 4 | 4 |
| Altitude rating | ≤9800 ft | ≤9800 ft | ≤9800 ft | ≤9800 ft, auto‑comp |
| 8000 ft winter perf. | Unusable | Marginal | Good | Excellent |
| Min flow to ignite | 0.5 GPM (all models) | |||
| Best for | South‑only, weekends | Most U.S. rigs, occasional winter | Full‑timers, family | Alaska / Canada / pro |
Real-World RVing: Where Power Meets Place
Tankless isn't just a feature—see how InstaShower performs in the places you actually camp.
The Sedona Getaway
You roll into your desert spot at noon. The kids are restless. With a traditional 6-gallon tank, you'd be waiting 40 minutes for reheating. The InstaShower 7 delivers instant flow at 0.5 GPM. You finish breakfast while others are still checking their water temp.
Explore InstaShower 7 →
The Colorado Climb
Altitude kills standard heaters. At 10,000 feet water takes forever to heat. InstaShower 9 Pro combines 66K BTU with a mixing tank. It maintains temperature whether rinsing ski gear or taking a second shower after a long day.
Explore InstaShower 9 Pro →
The Oregon Coast
Salt air and howling winds make standard heaters extinguish. InstaShower Ultra features HydroShield rated for Beaufort 9 winds. It ignites at just 0.5 GPM, ensuring your shower stays private when nature puts on a show.
Explore InstaShower Ultra →
InstaShower 7 Entry
Small RVs, B-vans, pop-upsWeekend warriors
- Power: 48K BTU — reliable for mild-climate use
- Swap: Drops into 14″×14″ cutout
- Flow: Single fixture or sink
- Weight: Lightweight, one-person install
The simplest swap for small rigs — no cutting, no adapters.
Best for: weekend trips, seasonal camping, or upgrading an older coach on a budget.
InstaShower 8 Plus Best Value
Mid-size trailers, Class CYear-round campers
- Power: 55K BTU — warms 41°F inlet to 105°F @ 1.2 GPM
- Flow: 2.9 GPM — runs shower + kitchen sink simultaneously
- Mobility: 25 lbs — one person can lift into place
- Efficiency: 84% — less propane waste
Perfect for couples. Best value per BTU dollar.
Best for: weekend to full-time use, occasional winter trips above 20°F, DIY installation.
InstaShower 9 Pro Family
Large trailers, Class A, 36'+ RVsFull-timers
- Power: 66K BTU — 120°F+ @ 1.2 GPM in 41°F inlet
- Flow: 3.6 GPM — two showers + kitchen tap simultaneously
- Tech: Built-in mixing tank — eliminates cold-water sandwich
- Stability: ±1°F within 5 seconds — no scalding or chilling
Eliminates cold-water surges. Sequential shower ready.
Best for: full-time living, multi-season camping down to 0°F, families showering back-to-back.
InstaShower Ultra Extreme
Off-grid vans, overland, exposed sitesAdventure seekers
- Power: 66K BTU — same winter punch as 9 Pro
- Resist: Beaufort 9 (strong gale) — flame stays lit in gusty passes
- Start: 0.5 GPM — works with trickle-feed from portable tank
- Tech: HydroShield protection — guards against condensation & debris
The only choice for harsh wind and low pressure.
Best for: full-time adventurers, coastal/mountain camping, boondocking with low-flow showerheads.
If you want a simpler model-by-model breakdown, read our updated comparison of Fogatti InstaShower RV tankless water heater models.
Don't take our word for it.
See what real customers and creators have to say.
FAQs
Minimum water flow to ignite?
0.5 GPM across the line. InstaShower Ultra holds ignition even lower thanks to HydroShield.
Winterizing?
No tank to drain. Blow out the lines or pump antifreeze per your RV's plumbing plan.
→Winterize Your RV Water Heater (Without Cracking a Tank)
High altitude?
Entire line rated to 9800 ft (certified at 5000 ft). Ultra auto-compensates.
Anode?
Tankless water heaters don’t use a storage tank, so there’s no anode rod to replace. Less maintenance, fewer worries.
Our Partners
FOGATTI Blog
The Complete Guide To RV Tankless Heaters For Every Camper
No more 30-minute wait between showers. No more draining a 6-gal tank to winterize. Four BTU tiers, one decision flow—find the tankless that matches where and how you camp.
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