1.58 GPM or 2.64 GPM Tankless Water Heaters? Compared by Specs
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You are comparing two Camplux propane tankless water heaters with different flow rates. The 158 gpm vs 264 gpm tankless water heater decision comes down to your water usage needs. Both units are portable, lightweight, and designed for outdoor use. They share the same fuel type and similar installation requirements. The main difference is the maximum flow rate, which affects how many fixtures you can run simultaneously. This guide breaks down the specs to help you choose.
Key differences
| Aspect | Camplux 1.58 GPM Portable Propane Water Heater | Camplux 2.64 GPM Portable Propane Water Heater |
|---|---|---|
| Flow Rate | 1.58 GPM | 2.64 GPM |
| BTU Output | 41,000 BTU/hr | 68,000 BTU/hr |
| Weight | 13 pounds | 21 pounds |
| Dimensions | 15.7 x 11.8 x 5.39 inches | 21.7 x 13 x 6.1 inches |
| Temperature Display | LED display | not listed |
| Safety Features | not listed | Flame failure, anti-freezing, over heating protection |
Which one should you choose?
Choose Camplux 1.58 GPM Portable Propane Water Heater if
- You need a lighter unit for backpacking or frequent travel.
- You only need to run one faucet or shower at a time.
- You prefer an LED display to monitor water temperature.
Choose Camplux 2.64 GPM Portable Propane Water Heater if
- You want higher water pressure for a more robust shower experience.
- You need more heating power for colder incoming water temperatures.
- You value built-in safety protections like flame failure and anti-freezing.
Verdict: The 1.58 GPM model is ideal for solo campers or those prioritizing portability and compact storage. The 2.64 GPM model suits users who need faster heating and higher flow for showers or multiple uses. Choose based on whether you value weight savings or performance.
Flow Rate and Power Specs Compared
Flow Rate
The Camplux 1.58 GPM Portable Propane Water Heater delivers a maximum output of 1.58 gallons per minute. This flow is sufficient for a single sink or a compact outdoor shower. The Camplux 2.64 GPM Portable Propane Water Heater provides 2.64 gallons per minute. This higher volume allows for faster filling of buckets or more comfortable showering. If you need to run two fixtures simultaneously, the 2.64 GPM model offers better capacity. Choose the 1.58 GPM unit for light, single-point use. Select the 2.64 GPM unit for higher demand scenarios.
Heating Power
Power output determines how effectively the unit heats water. The Camplux 1.58 GPM model has a maximum output power of 41,000 BTU/hr. The Camplux 2.64 GPM model features a maximum power output of 68,000 BTU/hr. The higher BTU rating on the 2.64 GPM unit helps maintain temperature stability at higher flow rates. This is crucial when inlet water temperatures are low. The 41,000 BTU/hr unit is adequate for its lower flow. The 68,000 BTU/hr unit provides more thermal energy for demanding tasks.
Weight
Portability depends significantly on unit weight. The Camplux 1.58 GPM Portable Propane Water Heater weighs only 13 pounds. It also features a foldable handle for easy carrying. The Camplux 2.64 GPM Portable Propane Water Heater weighs 21 pounds. While still portable, the 2.64 GPM model is heavier due to its larger internal components. If you plan to carry the heater frequently over long distances, the 13-pound unit is easier to manage. The 21-pound unit is better suited for stationary outdoor setups.
Temperature Control
Both units allow you to adjust water temperature, but the interfaces differ. The 1.58 GPM model uses an ECO & Full knob and includes an LED temperature display. Its range is 50-140°F. The 2.64 GPM model lists safety features like over-heating protection and a gas shut-off at 167°F. It does not explicitly list a user-adjustable temperature range or display type in the provided data. For precise manual control with visual feedback, the 1.58 GPM model offers a clear interface. The 2.64 GPM model prioritizes safety mechanisms.
Water Pressure Requirements
Minimum water pressure affects where you can install the unit. The Camplux 1.58 GPM model starts with a minimum of 3.0 PSI. This is suitable for rural or remote areas with weak water supply. The Camplux 2.64 GPM model lights when water pressure is between 3.6-110 PSI. The 3.0 PSI start on the 1.58 GPM unit is slightly more sensitive to low pressure. This makes it potentially more reliable in very low-pressure off-grid scenarios. The 2.64 GPM unit requires slightly higher pressure to ignite.
Which tankless heater fits your needs
Solo camper seeking lightweight portability
The 1.58 GPM model weighs only 13 pounds and measures 15.7 x 11.8 x 5.39 inches. Its compact size and foldable handle make it easy to carry. This unit is ideal for solo travelers who prioritize minimal weight and small dimensions over higher water volume.
Group needing higher flow rate
The 2.64 GPM unit delivers more water per minute, supporting faster showers or multiple uses. It features a 68,000 BTU/hr output for robust heating. This higher capacity model suits families or groups camping together who require reliable, high-volume hot water for daily routines.
User prioritizing safety protections
This model includes specific safety features like flame failure device, anti-freezing protection, and over-heating protection. It automatically shuts off gas if temperatures exceed 167°F. These safeguards provide added security for off-grid use, making it a safer choice for unattended or remote operations.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Camplux 1.58 GPM Portable Propane Water Heater | camping and low-pressure off-grid sites | Check price of Camplux 1.58 GPM Portable Propane Water Heater on Amazon |
| 2 | Camplux 2.64 GPM Portable Propane Water Heater | Outdoor camping and RV showers | Check price of Camplux 2.64 GPM Portable Propane Water Heater on Amazon |
The products compared
Camplux 1.58 GPM Portable Propane Water Heater
Best for: camping and low-pressure off-grid sites
- 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 of hot water using propane. It weighs just 13 pounds and includes a foldable handle for easy portability. The 41,000 BTU/hr output heats water between 50 and 140°F. It starts with low water pressure of 3.0 PSI, making it suitable for remote areas. The LED display shows current temperature settings clearly.
Pros
- 1.58 GPM flow rate for on-demand heating
- Lightweight 13-pound build with foldable handle
- Starts at 3.0 PSI water pressure
- LED display for temperature monitoring
Cons
- Lower 1.58 GPM flow rate limits simultaneous use
- Manual knob control lacks digital precision
- Requires connection to a 20 lb propane tank
Good fit if
- You need a portable heater for camping
- You have low water pressure at your site
- You want a lightweight unit for travel
Skip if
- You need higher flow rates for multiple fixtures
- You prefer digital temperature controls
- You require a high-capacity indoor installation
Verdict: Camplux BW158 1.58 GPM Propane Heater is a compact, lightweight option for campers and off-grid users who prioritize portability over high flow rates. It fits those with low water pressure or simple heating needs.
Camplux 2.64 GPM Portable Propane Water Heater
Best for: Outdoor camping and RV showers
- Flow Rate
- 2.64 GPM (what this guide is about)
- Fuel Type
- Propane
- BTU
- 68,000 BTU/hr
- Installation Location
- Outdoor
- Dimensions
- 21.7 x 13 x 6.1 inches
- Use
- Camping
View on Amazon: Camplux 2.64 GPM Portable Propane Water Heater Affiliate link
This Camplux unit delivers 2.64 gallons per minute of hot water using propane. It weighs 21 pounds and measures 21.7 by 13 by 6.1 inches. The 68,000 BTU burner provides instant heat for outdoor use. It lights at low water pressure, making it suitable for remote locations. You get endless hot water for camping or RV showers without complex installation.
Pros
- 2.64 GPM flow rate for faster filling
- Lights at low water pressure (3.6 PSI)
- Compact 21-pound portable design
- 68,000 BTU output for instant heat
Cons
- Outdoor installation only
- Propane fuel required
- No digital temperature display
Good fit if
- You need hot water for camping or RVs
- You want a portable unit for outdoor showers
- You have low water pressure at your site
Skip if
- You need indoor installation
- You prefer electric power sources
- You require precise digital temperature control
Verdict: Camplux 2.64 GPM Propane Heater offers high flow and portability for outdoor use, making it a solid choice for campers and RV owners who need reliable hot water on the go.
Specifications side by side
| Spec | Camplux 1.58 GPM Portable Propane Water Heater | Camplux 2.64 GPM Portable Propane Water Heater |
|---|---|---|
| Fuel Type | Propane | Propane |
| Flow Rate | 1.58 GPM | 2.64 GPM |
| BTU | 41,000 BTU/hr | 68,000 BTU/hr |
| Installation Location | not stated | Outdoor |
| Temperature Control | 50-140°F | not stated |
| Dimensions | 15.7 x 11.8 x 5.39 inches | 21.7 x 13 x 6.1 inches |
| Use | not stated | Camping |
| Weight | 13 pounds | 21 pounds |
| Color | White | Gray |
| Model | BW158-CA | BW264G |
| Size | not stated | 21.7*13*6.1 |
Frequently asked questions
Can I use both heaters indoors?
No. The 2.64 GPM model is explicitly rated for outdoor installation only. The 1.58 GPM unit is designed for camping and off-grid use, which implies outdoor settings. Propane heaters produce carbon monoxide. Never install either unit in an enclosed space like a bathroom or garage without proper ventilation.
Which one is lighter for backpacking?
The 1.58 GPM model is lighter. It weighs 13 pounds. The 2.64 GPM model weighs 21 pounds. If you are hiking or need to carry the unit over long distances, the lighter option reduces your load. Both are portable, but weight matters for solo travel.
Do these heaters have a display screen?
The provided specifications do not mention digital displays for either unit. The 1.58 GPM model comes in white, and the 2.64 GPM model comes in gray. You should check the physical product images or manual for interface details. The data focuses on flow rate, dimensions, and fuel type.
Is the 2.64 GPM unit good for RVs?
Yes. The 2.64 GPM model is best for outdoor camping and RV showers. It delivers 68,000 BTU of power. This higher flow rate supports simultaneous use in an RV setting better than the lower flow option. It fits the needs of travelers requiring reliable hot water.
What are the dimensions of the 1.58 GPM heater?
The 1.58 GPM unit measures 15.7 inches in height, 11.8 inches in width, and 5.39 inches in length. It is a compact, lightweight option. These dimensions make it easy to store in small spaces or carry during trips. The color is white.
Can I run both a sink and shower at the same time?
Likely not with either model. The 1.58 GPM flow is sufficient for a single sink. The 2.64 GPM flow supports a shower but may struggle with simultaneous use. Tankless heaters split flow when multiple fixtures are open. You may experience reduced water pressure or temperature drops.
Does the 2.64 GPM model fit in small RVs?
The 2.64 GPM model measures 21.7 inches in height and 13 inches in width. It is larger than the 1.58 GPM unit. Check your RV storage space carefully. The unit weighs 21 pounds. Portability is good, but size may be a constraint in very compact living spaces.