GEN II Ranein Propane Gas Tankless Water Heater Max 4.3 GPM, 100,000 BTU Indoor On Demand Instant Hot Water Heater with LED Temperature Control Panel

Price: $599.99 - $399.00
(as of Feb 11, 2026 08:01:05 UTC – Details)

Product description

1 Whole House Water

2 Shower Serenity

3 Warm Moments

4 Family Warmth

5 Smart Temperature Control

1 Oxygen-Free Copper

2 Sectional Burners

3 Anti-Backflow Fan

4 Quiet Work

1 Thermostatic

2 Chip-Controlled Heating

3 Temperature Sensor

4 LED Display

1 2+8

2 Water Temperature Map

3 About Us

4 After Sales

5 Q&A

Ranein Gas Tankless Water Heatear

Add to Cart

Add to Cart

Add to Cart

Add to Cart

Customer Reviews

4.1 out of 5 stars 77

4.1 out of 5 stars 77

4.1 out of 5 stars 77

4.1 out of 5 stars 77

4.1 out of 5 stars 77

4.1 out of 5 stars 77

Price

$399.00$399.00

$299.00$299.00

$579.00$579.00

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$599.00$599.00

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Water Points

Bathroom x 2, Kitchen x 1

Bathroom x 1, Kitchen x 1

Bathroom x 2, Kitchen x 2

Bathroom x 3, Kitchen x 3

Bathroom x 2, Kitchen x 2

Bathroom x 3, Kitchen x 3

Suggested Housing

Apartment, Townhouse

Apartment

Apartment

Single Family Residence

SFR, Townhouse

Single Family Residence

BTU

100,000 BTU

80,000 BTU

130,000 BTU

190,000 BTU

130,000 BTU

190,000 BTU

GPM

2.2- 5.0 GPM

2.0- 4.6 GPM

2.9- 6.1 GPM

4.2- 8.9 GPM

2.9- 6.1 GPM

4.2- 8.9 GPM

Mounting Location

Indoor Installation

Indoor Installation

Indoor Installation

Indoor Installation

Outdoor Installation

Outdoor Installation

Input Voltage

110- 120 Volts (AC)

110- 120 Volts (AC)

110- 120 Volts (AC)

110- 120 Volts (AC)

110- 120 Volts (AC)

110- 120 Volts (AC)

Gas Inlet

NPT 1/2″

NPT 1/2″

NPT 3/4″

NPT 3/4″

NPT 3/4″

NPT 3/4″

Cold Water Inlet

NPT 1/2″

NPT 1/2″

NPT 1/2″

NPT 3/4″

NPT 1/2″

NPT 3/4″

Hot Water Outlet

NPT 1/2″

NPT 1/2″

NPT 1/2″

NPT 3/4″

NPT 1/2″

NPT 3/4″

Flue Pipe Dia

Φ 3″

Φ 3″

Φ 3.15″

Φ 3.9″

No need

No need

Water Pressure Range

3.6- 116 PSI

14- 150 PSI

3.6- 116 PSI

3.6- 116 PSI

3.6- 116 PSI

3.6- 116 PSI

Minimum water flow

0.75 GPM

0.7 GPM

0.75 GPM

0.75 GPM

0.75 GPM

0.75 GPM

Endless Hot Water for Home Use: This 4.3 GPM, 100,000 BTU gas tankless heater supplies 3–4 taps (shower / kitchen / bar)—no more hot water shortages for daily household needs.
Steady Temperature for Comfort: Advanced tech keeps water temperature stable, auto-adjusting flow and heat—no sudden changes, perfect for showers and daily use.
Multiple Smart Modes for Daily Needs: Comes with diverse smart modes: 4-Season (auto adapts to inlet temp), Kitchen (100°F adjustable), Bathtub (50–800 L, full-water beep)—meets various daily hot water demands effortlessly
Energy-Saving to Cut Bills: Heats water on demand, reducing standby waste versus traditional tank heaters—lowers utility costs and supports eco-living.
Space-Saving for Small Areas: Compact wall-mounted gas tankless heater fits apartments, small homes, or renovations—frees up floor space.
Save Money on Extra Costs & Energy: Kit includes exhaust pipe (no extra purchase needed); its oxygen-free copper tank cuts heat loss to lower energy use, fitting standard 1/2″ NPT water and gas ports.
Protection & Installation Note: Built-in anti-freeze unit resists low temperatures down to 14°F (-10°C); open the drain valve to empty the tank after use if temp drops below this to prevent pipe cracking. Must be installed by licensed professionals per local codes—not recommended for areas over 2,000 feet elevation.