Fogatti InstaShower Ultra (FS10B1SGD)

Last updated: November 4, 2026

Fogatti InstaShower Ultra (FS10B1SGD)
3.0/5#10 of 19 in tankless RV water heaters
3.0

A tankless heater rated 66,000 BTU for endless hot water in an RV that has the cutout for it.

  • 66,000 BTUInput
  • 3.9 GPMMax flow
  • PropaneFuel
Check price at Amazon$799.99

Price checked November 4, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Heats on demand, so the hot water does not run out mid-shower
  • Up to 3.9 GPM runs the shower and the sink together
  • Built-in mixing tank steadies the temperature
Cons
  • No warranty term published on the listing
  • Needs a 12 V supply and propane; the maker publishes few measured figures
  • Over $600

The Fogatti InstaShower family

Every Fogatti InstaShower model we rank, smallest first. Ratings compare each against its own type.

ModelInputRatingPrice
Fogatti InstaShower 8 Plus (FS08B1SBD)55,000 BTU2.6/5$519.99
Fogatti InstaShower 8 Pro (FS09C1SBD)60,000 BTU2.5/5$599.99
Fogatti InstaShower 9 Pro (FS10B1S)66,000 BTU2.9/5$739.99
Fogatti InstaShower Ultra (FS10B1SGD) (this one)66,000 BTU3.0/5$799.99
Fogatti InstaShower 7 (FS07B1S)-2.5/5$399.93

How it scores

The rating comes from 3 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.

Specifications

Model numberFS10B1SGD
Heat and water
Input capacity66,000 BTU
Maximum flow3.9 GPM
FuelPropane

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