1.58 GPM vs 5.0 GPM Tankless Water Heaters: Which Should You Buy?
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You are comparing the 158 gpm vs 50 gpm tankless water heater options to find the right fit. Both units deliver hot water on demand, but they serve very different needs. The Camplux model is a portable propane heater designed for outdoor or off-grid use. The Ranein unit is a powerful indoor natural gas system built for whole-home supply. One prioritizes mobility and low water pressure, while the other focuses on high capacity and fixed installation. Choose based on your fuel source and location.
Key differences
| Aspect | Camplux 1.58 GPM Portable Propane Water Heater | Ranein Indoor Natural Gas Tankless Water Heater |
|---|---|---|
| Fuel Type | Propane | Natural Gas |
| Flow Rate | 1.58 GPM | 5.0 GPM |
| Installation Location | Outdoor/Portable | Indoor |
| Weight | 13 pounds | 42 pounds |
Which one should you choose?
Choose Camplux 1.58 GPM Portable Propane Water Heater if
- You need a lightweight unit for camping or remote cabins
- You have low water pressure (3.0 PSI minimum)
- You want to use portable propane tanks
Choose Ranein Indoor Natural Gas Tankless Water Heater if
- You need hot water for multiple indoor fixtures
- You have a natural gas connection available
- You want a fixed, high-capacity indoor installation
Verdict: The Camplux 1.58 GPM unit is the practical choice for portable, off-grid scenarios where weight and low water pressure matter. The Ranein 5.0 GPM model is better for permanent indoor installations requiring higher flow for multiple outlets. Select the propane option for mobility and the natural gas unit for consistent whole-home supply.
Flow Rate and Fuel Comparison
Flow Rate
The difference in flow rate is the most significant factor for your decision. The Camplux model delivers 1.58 GPM, which is suitable for a single sink or shower. This low output ensures efficiency for portable use but limits simultaneous usage. In contrast, the Ranein unit offers 5.0 GPM as listed in its attributes, despite the title mentioning 8.5 GPM. This higher flow supports multiple outlets, such as a kitchen and bathroom running at once. You need to decide if your household requires high-volume hot water or just single-point convenience.
Fuel Type
Fuel availability dictates where you can install these units. The Camplux uses propane, which makes it ideal for off-grid cabins, RVs, or outdoor camping trips. It connects to a standard 20 lb propane tank, offering flexibility without fixed infrastructure. The Ranein operates on natural gas, requiring a permanent connection to your home’s gas line. This restricts it to indoor installation in residential settings. If you lack a natural gas line or need mobility, propane is the only viable option for you.
Installation Location
Where you place the heater matters for safety and convenience. The Camplux is designed for outdoor use, featuring a portable build that weighs only 13 pounds. It includes a foldable handle for easy carrying. The Ranein is explicitly rated for indoor installation only, noting it is not recommended for areas over 2,000 feet. Its larger size and weight of 42 pounds require a fixed mount. You must choose the Camplux for outdoor flexibility or the Ranein for a permanent indoor setup.
Power Output
Heating capacity determines how well the unit handles cold inlet water. The Camplux provides 41,000 BTU/hr, which is sufficient for its low flow rate. This power level maintains temperature for single-point use in moderate climates. The Ranein delivers 190,000 BTU, a much higher capacity needed to heat water for 5.0 GPM. This significant difference ensures the Ranein can maintain temperature even with high demand. If you live in a cold climate with high usage, the higher BTU of the Ranein is more effective.
Temperature Control
Ease of adjusting water temperature affects daily comfort. The Camplux features a simple ECO knob and an LED display, allowing you to set temperatures between 50°F and 140°F. This range is adequate for most outdoor or single-fixture needs. The Ranein uses a fan system to adjust combustion speed, ensuring stable temperatures through full combustion. While specific temperature ranges are not listed for the Ranein, its advanced fan system suggests precise control for whole-home use. You get simple manual control with the Camplux and automated stability with the Ranein.
Which tankless water heater fits you
Campers needing portable hot water
You need a lightweight, portable unit for outdoor use. This Camplux model weighs only 13 pounds and features a foldable handle for easy carrying. It runs on propane and starts with low water pressure of 3.0 PSI, making it ideal for remote cabins or off-grid camping trips where standard plumbing is unavailable.
Homeowners supplying multiple fixtures
You require high-volume hot water for a whole family. This Ranein unit delivers 8.5 GPM with 190,000 BTU, supporting four to six outlet points simultaneously. It uses natural gas and includes a fan system for safe, efficient combustion. The compact indoor design fits easily into utility spaces without taking up much room.
Users wanting precise temperature control
You prefer simple, manual temperature adjustment. This Camplux heater features an easy-to-use knob and an LED display, allowing you to set temperatures between 50 and 140 degrees Fahrenheit. The straightforward interface ensures you can quickly find your ideal water temperature without navigating complex digital menus or electronic controls.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Camplux 1.58 GPM Portable Propane Water Heater | portable outdoor and off-grid use | Check price of Camplux 1.58 GPM Portable Propane Water Heater on Amazon |
| 2 | Ranein Indoor Natural Gas Tankless Water Heater | Whole-home hot water demands | Check price of Ranein Indoor Natural Gas Tankless Water Heater on Amazon |
The products compared
Camplux 1.58 GPM Portable Propane Water Heater
Best for: portable outdoor and off-grid use
- Flow Rate
- 1.58 GPM (what this guide is about)
- Fuel Type
- Propane
- BTU
- 41,000 BTU/hr
- Temperature Control
- 50-140°F
- Dimensions
- 15.7 x 11.8 x 5.39 inches
- Weight
- 13 pounds
View on Amazon: Camplux 1.58 GPM Portable Propane Water Heater Affiliate link
This Camplux unit delivers 1.58 GPM at 41,000 BTU/hr using propane. It weighs 13 pounds with a foldable handle for easy transport. The LED display shows temperatures from 50 to 140°F. It starts with low water pressure of 3.0 PSI. You should buy this if you need portable hot water for camping or remote cabins.
Pros
- Lightweight design at 13 pounds
- Foldable handle for portability
- LED temperature display
- Starts at 3.0 PSI water pressure
Cons
- Low flow rate of 1.58 GPM
- Requires a 20 lb propane tank
- Manual knob temperature control
Good fit if
- You need hot water for camping
- You are in a remote cabin
- You have low water pressure
Skip if
- You need high flow rates
- You want indoor permanent installation
- You prefer digital controls
Verdict: Camplux Propane Portable 1.58 GPM is ideal for campers and off-grid users who prioritize portability over high flow rates. It fits your needs if you need a lightweight, propane-powered heater for outdoor or remote use.
Ranein Indoor Natural Gas Tankless Water Heater
Best for: Whole-home hot water demands
- Flow Rate
- 5.0 GPM (what this guide is about)
- Fuel Type
- Natural Gas
- BTU
- 190,000 BTU
- Installation Location
- Indoor
- Dimensions
- 24.25"L x 15.08"W x 8.07"H
- Weight
- 42 pounds
View on Amazon: Ranein Indoor Natural Gas Tankless Water Heater Affiliate link
This Ranein unit delivers 8.5 GPM at 190,000 BTU for whole-home hot water. Its indoor design features a bottom-mounted fan for safety and stability. The compact footprint measures 24.25 by 15.08 by 8.07 inches. It supports 4 to 6 outlets simultaneously. You get unlimited hot water without waiting for a tank to reheat. This model suits larger households needing high flow rates.
Pros
- 8.5 GPM flow rate supports multiple outlets
- 190,000 BTU heating capacity for rapid heating
- Bottom-mounted fan reduces smoke backflow risk
- Compact dimensions save installation space
Cons
- Indoor installation only
- Not recommended for elevations over 2,000 feet
- Weighs 42 pounds requiring sturdy mounting
Good fit if
- You need high flow for multiple bathrooms
- You have an indoor gas line
- You want whole-home coverage
Skip if
- You live above 2,000 feet elevation
- You require outdoor installation
- You only need a single sink supply
Verdict: Ranein 8.5 GPM Natural Gas Indoor Heater provides strong output for large families. It fits homes with existing gas lines and indoor mounting space.
Specifications side by side
| Spec | Camplux 1.58 GPM Portable Propane Water Heater | Ranein Indoor Natural Gas Tankless Water Heater |
|---|---|---|
| Fuel Type | Propane | Natural Gas |
| Flow Rate | 1.58 GPM | 8.5 GPM |
| BTU | 41,000 BTU/hr | 190,000 BTU |
| Installation Location | not stated | Indoor |
| Temperature Control | 50-140°F | not stated |
| Dimensions | 15.7 x 11.8 x 5.39 inches | 24.25"L x 15.08"W x 8.07"H |
| Weight | 13 pounds | 42 pounds |
| Color | White | Gray-NG |
| Model | BW158-CA | RH19K-NG |
| Size | not stated | 8.5 GPM Indoor |
Frequently asked questions
Can a 1.58 GPM heater supply hot water for a shower?
Yes, the Camplux 1.58 GPM unit can handle a single shower. Its flow rate is sufficient for one person at a time. It is not designed for simultaneous use with other fixtures. You should expect a steady but gentle stream. This makes it ideal for camping or remote locations where high volume is unnecessary.
Is the 5.0 GPM model suitable for a whole home?
The Ranein 5.0 GPM heater is built for larger households. It supports whole-home hot water demands. You can run multiple fixtures, such as a shower and a kitchen sink, at the same time. This unit requires indoor installation and a natural gas connection to function correctly.
What is the weight difference between these two units?
The Camplux model weighs 13 pounds, making it highly portable. The Ranein unit weighs 42 pounds, reflecting its larger capacity and indoor design. The lighter Camplux unit is easy to carry for outdoor trips. The heavier Ranein model is meant for permanent mounting in a utility area.
Do I need a gas line for the 1.58 GPM heater?
No, the Camplux 1.58 GPM heater runs on propane. It does not require a permanent natural gas line. This allows you to use it anywhere with a standard propane tank. The Ranein 5.0 GPM model, however, requires a natural gas connection for operation.
Which heater is better for off-grid living?
The Camplux 1.58 GPM is the better choice for off-grid use. It is portable, lightweight, and runs on propane. You can easily transport it to remote locations. The Ranein 5.0 GPM unit is designed for indoor installation with existing gas lines, making it unsuitable for mobile or off-grid scenarios.
How much space does the 5.0 GPM heater take up?
The Ranein 5.0 GPM unit measures 15.1 inches in width and length, with a height of 24.3 inches. It requires adequate indoor space for mounting. The Camplux 1.58 GPM model is more compact, measuring 11.8 inches wide and 15.7 inches tall. It takes up less room in tight spaces.