A 6-gallon steel tank heater that runs on propane and electric for a straight swap in an RV with the matching cutout.
Amazon $613.51The Suburban SAW6DE (5321A) rates 2.7 among tank RV water heaters; the Fogatti InstaShower 8 Pro (FS09C1SBD) rates 2.5 among tankless ones. The Fogatti InstaShower 8 Pro (FS09C1SBD) costs $13.52 less ($599.99 vs $613.51).
Prices were last checked November 4, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.

A tankless heater rated 60,000 BTU for endless hot water in an RV that has the cutout for it.
Amazon $599.99Scores side by side
These two sit in different type classes (tank and tankless), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Suburban SAW6DE (5321A) | Fogatti InstaShower 8 Pro (FS09C1SBD) |
|---|---|---|
| Overall rating | 2.7/5 | 2.5/5 |
| Value 40% | 7 $102.25 per gallon of tank ($613.51, 6 gal) | 33 $10 per 1,000 BTU ($599.99, 60,000 BTU) |
| Hot water output 35% | 91 14.1 gal/h recovery on gas | 47 up to 2.9 GPM |
| Warranty 25% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| Suburban SAW6DE (5321A) | Fogatti InstaShower 8 Pro (FS09C1SBD) | |
|---|---|---|
| Heat and water | ||
| Input capacity | 10,000 BTU | 60,000 BTU |
| Tank size | 6 gal | - |
| Gas recovery | 14.1 gal/h | - |
| Maximum flow | - | 2.9 GPM |
| Fuel | Propane + electric | Propane |
| Fit | ||
| Weight | 41 lb | - |