INSTASHOWER 7
48K BTU RV Tankless Water Heater
$469.99
$589.99
Save $120.00
Endless hot water in a lower-output replacement.
InstaShower 7 delivers 48,000 BTU output and up to 2.5 GPM for RV owners with lighter hot-water demand. Multiple door sizes, 12V controls and LP propane heating make it a practical step up from a limited tank heater.
View all features ↓48,000 BTUEfficient propane heating
Up to 2.5 GPMOn-demand hot-water flow
95–123°FSelectable temperature range
13 × 13 inMinimum clear opening
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30-day returns
Free local shipping
2-year warranty
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Fit and installation
- Minimum clear opening
- 13 × 13 in
- Door options
- 15×15 / 15×18 / 18×18 in
- Fuel
- LP propane
- Electrical supply
- 12V DC
- Water connections
- 1/2 in inlet and outlet
- Water pressure
- 14.5–116 PSI
Measure the opening and exterior trim. Confirm plumbing, propane, 12V wiring and vent clearance before ordering the selected door.
What’s included
- ✓Water heaterFogatti tankless RV water heater
- ✓Access doorSelected color and door-size configuration
- ✓ControllerWired digital controller
- ✓Safety hardwarePressure-relief and connection components
- ✓DocumentationInstallation hardware and user manual
Always confirm the exact package contents and selected variant before installation.
Specifications
- Heat input
- 48,000 BTU
- Maximum flow
- Up to 2.5 GPM
- Temperature range
- 95–123°F
- Fuel
- LP propane
- Electrical supply
- 12V DC
- Water pressure
- 14.5–116 PSI
- Minimum opening
- 13 × 13 in
Common questions
Is 2.5 GPM enough for my RV?
It suits lighter hot-water demand; incoming water temperature and shower flow affect the result.
Can it replace a 10- or 12-gallon tank heater?
Often an 18 × 18-inch door and careful trim planning are required. Measure before ordering.
Does it include freeze protection?
Yes, but the RV plumbing still needs proper winterization when temperatures fall below freezing.
Recommended for compact RVs
For compact trailers and smaller Class B/C layouts, start with right-sized 13.5K cooling and 25K ducted heat.
13.5K rooftop cooling is the right-sized companion for smaller RV interiors. Confirm the roof opening and select the matching ducted or non-ducted ADB.
Choose AC configuration
25K output and 220 CFM airflow suit smaller furnace replacements. Confirm cabinet orientation, ducts, exhaust, propane and 12V power.
Check furnace fit
InstaShower 7
$469.99
$589.99
Save $120.00
RIGHT-SIZED TANKLESS HOT WATER
Continuous hot water without buying more heater than a compact RV needs.
InstaShower 7 delivers 48,000 BTU and up to 2.5 GPM. It is designed for compact travel trailers, smaller Class B/C layouts, couples and warm-weather users who normally run one hot-water fixture at a time.
48,000 BTUEfficient propane output
Up to 2.5 GPMOne-shower demand
84%Rated efficiency
Up to 9,800 ftHigh-altitude operation
The upgrade is continuous hot water—not maximum burner output.
For a smaller RV and lighter household, the entry model can replace a limited tank without oversizing the hot-water system.
NO TANK RECOVERY WAIT
Hot water continues as long as the RV can supply propane, water and 12V control power.
The shower is no longer limited to a stored six-gallon volume or a 20–30 minute tank recovery cycle.
RIGHT-SIZED OUTPUT
48K BTU is aimed at one-fixture use and warmer incoming water.
Lower output can be a sensible fit for couples, compact trailers and owners who do not need simultaneous shower and sink demand.
COMMON DOOR OPTIONS
Choose the exterior coverage that matches the old installation.
15 × 15, 15 × 18 and 18 × 18 options support many Suburban, Atwood, Dometic, Girard and Furrion replacement layouts.
TRAVEL-READY BASICS
High-altitude mode, a digital controller and freeze protection cover the core RV use case.
The heater keeps the system simple while retaining the safety and control features expected for travel.
MATCH THE HOUSEHOLD
Choose 7 when the RV and usage pattern are genuinely compact.
It is the right choice when one shower is the main demand, the household is small and the trip does not require maximum cold-water recovery.
Compact trailers and smaller Class B/C RVs
The lower-flow platform aligns with smaller interiors and one-fixture use.
Couples and solo travelers
It replaces tank recovery limits without paying for unused high-flow capacity.
Mostly warm-weather camping
Warmer incoming water reduces the temperature rise the burner must deliver.
Use the door option to make the smaller heater a clean replacement.
The heater uses a common minimum opening, but the exterior door must cover the previous cutout and trim.
INSTALLATION CHECK
Confirm the opening and choose the correct exterior coverage.
The selected door size is part of the installation decision, not merely a color choice.
- Minimum opening
- 13 × 13 in
- Door options
- 15×15 / 15×18 / 18×18 in
- Water pressure
- 14.5–116 PSI
- Utilities
- LP propane + 12V DC
- Product size
- 15 × 14.3 × 15 in
The 15 × 15-inch option is commonly used for a 4/6-gallon replacement; larger tank openings may require the larger door variants.
Start with actual hot-water demand, then choose the output tier.
7 covers lighter one-fixture use. 8 Plus adds flow for regular families, while 9 Pro adds the mixing tank and highest output for larger rigs.
InstaShower 7
For compact RVs, couples and lighter one-fixture use.
- Heat input
- 48K BTU
- Flow
- Up to 2.5 GPM
- Best for
- Compact RVs / lighter use
InstaShower 8 Plus
For travel trailers and Class C RVs with regular family showers.
- Heat input
- 55K BTU
- Flow
- Up to 2.9 GPM
- Best for
- Travel trailers / Class C
InstaShower 9 Pro
For larger rigs, full-time use and heavier demand with a mixing tank.
- Heat input
- 66K BTU
- Flow
- Up to 3.6 GPM
- Best for
- Larger rigs / heavier use
See the entry model reviewed, installed and prepared for freezing weather.
Review the product fit and installation before deciding whether 2.5 GPM matches the way the RV is used.
▶PRODUCT REVIEW
See where InstaShower 7 fits in the range
A practical explanation of its 48K output, 2.5 GPM flow and lighter-use positioning.
▶INSTALLATION
Watch a tank-to-tankless replacement
Removal, utility connections, sealing, controller wiring and startup testing.
▶WINTERIZATION
Drain the water heater before freezing weather
See the maintenance step that protects the heat exchanger and plumbing.
Make sure the lower-output model matches the way you camp.
These answers cover household size, cold incoming water, door fit and when to choose 8 Plus instead.
Is 2.5 GPM enough for an RV shower?
It matches the approximate flow of many RV showers, but actual hot-water delivery depends on incoming temperature, pressure and the showerhead.
Can I use the shower and sink at the same time?
This model is best treated as a one-fixture system. Choose a higher-output model when simultaneous demand is important.
Can it replace a 6- or 10-gallon tank heater?
The heater uses a 13 × 13-inch minimum opening, with different door sizes available to cover common exterior openings.
Does it work in colder weather?
It can operate in cold travel, but colder incoming water increases the required temperature rise. 8 Plus or 9 Pro provides more recovery margin.
Who should choose 8 Plus instead?
Choose 8 Plus for a mid-size RV, regular family showers or when 2.5 GPM does not provide enough margin.
Ready to replace tank recovery with right-sized on-demand hot water?
Choose the matching door above and compare the installation requirements with the RV before ordering.
This product is rated 5.0 of 5.0 stars.
It has received 331 reviews.