FOGATTI RV Tankless Water Heater: In-Depth Review

For RV enthusiasts who crave a home-like hot shower experience even while boondocking in high altitudes or remote areas, the FOGATTI InstaShower 8 Plus tankless water heater promises unmatched performance and convenience. In this review, we will explore its features, performance, user feedback, pros and cons, and provide a final verdict to help you decide whether this RV tankless water heater is the right fit for you.

Key Features and Specifications

The InstaShower 8 Plus isn’t just another RV tankless water heater—it’s purpose-built with RV life in mind. Here’s a snapshot of its specifications and standout features:

Product Overview

Feature	Specification/Detail
Brand	FOGATTI
Model	InstaShower 8 Plus, Gen 2
Dimensions (Door)	15″W x 15″H
Installation Opening	13″ x 13″
Color	Black
Power Source	Liquid Propane
Water Heating Capacity	2.9 GPM (Gallons Per Minute)
BTU Rating	55,000 BTU
Material	Alloy Steel
Voltage	DC 12V
Watts	46 Watts
Tank Size Replaced	6 Gallons (also fits most Suburban, Atwood, Girard units)
Certification	CSA Certified
Remote Control	Included (2-meter cable length)

Key Safety and Functionality Features

• Low Water Pressure Startup
• Dry Combustion Protection
• Overheat Protection
• Water Overpressure Protection
• Anti-Freezing Protection
• Automatic Gas Shut-Off
• Built-In Forced Exhaust Fan

These features work together to create a safe, efficient, and easy-to-use experience for RV owners.

Performance

Heating Capacity & Flow Rate

One of the key selling points of the FOGATTI InstaShower 8 Plus is its tankless design, delivering continuous hot water with a flow rate of up to 2.9 GPM. This is substantial enough for two taps or a single high-flow shower head to be used simultaneously. Compared to conventional 6- or 10-gallon tank water heaters that provide hot water for only 5–8 minutes, the Fogatti heater can support continuous use for over 40 minutes without running out—thanks to its propane-powered, on-demand system.

High Altitude Compatibility

A unique and market-leading feature is the unit’s high-altitude operation mode, which ensures consistent performance up to 9,800 feet, such as in places like the Denver plateau. Most tankless RV water heaters suffer from performance degradation or outright failure in thin-air conditions, but the FOGATTI handles this elegantly by using staged combustion to optimize flame intensity.

Propane Efficiency

The 55,000 BTU burner is more than powerful—it’s also smart. The staged combustion technology helps modulate heat output, especially useful in warmer weather when you don’t need high temperature water. This not only prevents scalding but extends propane supply, a critical consideration for long trips where refueling may be infrequent.

Startup and Responsiveness

The unit features low water pressure start-up—ideal for RVers using variable water sources or gravity-fed tanks. Water heats up quickly after demand begins, and there’s no need for preheating. Plus, there’s no waiting period between showers. This is a significant upgrade from tanked models, where you might have to wait up to 30 minutes to reheat after a single shower.

Customer Feedback

Positive Reviews

RVers across platforms like Amazon and RV forums have praised the InstaShower 8 Plus for its robust build, consistent performance, and quiet operation. Here are recurring sentiments from real users:

• Ease of Installation: Many customers highlighted that replacing older Suburban or Atwood tank water heaters was seamless. The included 15 x 15 inch door fit perfectly in most RVs.
• Hot Water on Demand: Users appreciated that they could shower, wash dishes, and even use hot water for laundry back-to-back without worrying about reheating cycles.
• Quiet Operation: Despite its power, the exhaust fan operates quietly, making it unobtrusive even in smaller Class B RVs.
• High Altitude Reliability: Several users confirmed reliable operation at elevations over 8,000 feet, where other models failed to function.

Constructive Criticism

• Installation Instructions: Some users reported that the manual could be more detailed, especially for retrofitting into a 10-gallon setup.
• Remote Sensitivity: A few customers found the remote controller needed a clearer line of sight or more precise placement for optimal performance.

Pros and Cons

To summarize real-world usage and specs, here’s a breakdown:

Pros

Feature	Benefit
Tankless Design	Continuous hot water, great for families or multi-use applications
High BTU Output (55,000)	Heats water quickly and maintains flow even in colder climates
High Altitude Functionality	Operates smoothly at elevations up to 9,800 feet
Propane Powered	Doesn’t drain RV battery or rely on shore power
Multiple Safety Features	Auto shut-off, overheat and overpressure protection, anti-freezing
Compact Size	15 x 15 inch door fits most existing RV water heater openings
Remote Controller	Convenient indoor temperature control
Low Water Pressure Start-Up	Works with inconsistent or low-pressure water sources
Built-in Pressure Relief Valve	Saves cost and simplifies installation

Cons

Limitation	Impact
Initial Installation Complexity	May require professional help or DIY knowledge for retrofits
Remote Controller Range	May be limited by mounting position or wiring constraints

Final Verdict

The FOGATTI RV Tankless Water Heater – InstaShower 8 Plus (Gen 2) is a standout performer in the crowded space of RV water heating solutions. Designed for real-world RV scenarios—including high altitudes, low pressure water systems, and extended use—it truly meets the expectations of full-timers and weekend warriors alike.

Its reliable and instant hot water supply, coupled with rugged safety features, makes it ideal for both summer road trips and chilly winter adventures. While the installation might pose a small challenge for some, the long-term gains in convenience, water access, and propane efficiency more than make up for it.

Check out our reviews of the best tankless water heaters below:

• Best Electric Tankless Water Heater
• Best Propane Tankless Water Heater
• Best Natural Gas Tankless Water Heater
• Best Non-Condensing Tankless Water Heater
• Best RV Tankless Water Heate