Best MAREY Tankless Water Heaters: 2 Models Compared
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This guide covers the best MAREY tankless water heaters available today. We compared 2 models to help you choose the right unit for your home. MAREY offers a compact electric shower heater and a larger propane model for full-house use. The MAREY Mini Marey Electric Shower Heater is the top pick because it fits single shower head installations with minimal space. Our selection relies strictly on the specifications published on the product listings. You can trust these facts to guide your decision. Each model serves a distinct need, from small bathroom sinks to whole-home supply.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | MAREY Mini Marey Electric Shower Heater Best overall | single shower head installations | Check price of MAREY Mini Marey Electric Shower Heater on Amazon |
| 2 | Marey GA24CSALP 7.5 GPM Propane Heater Best budget | Full-house propane hot water supply | Check price of Marey GA24CSALP 7.5 GPM Propane Heater on Amazon |
Our 2 picks
MAREY Mini Marey Electric Shower Heater
Best for: single shower head installations
- Fuel Type
- Electric
- Wattage
- 2.6 kW
- Voltage
- 110V
- Dimensions
- 5.3" x 8.7" x 3.9"
- Weight
- 2.75 pounds
View on Amazon: MAREY Mini Marey Electric Shower Heater Affiliate link
The MAREY Mini Marey is a compact electric tankless shower heater designed for point-of-use installation. It operates on 110V with 2.6 kW of power, raising water temperature by 10°F to 23°F. The unit weighs just 2.75 lbs and measures 5.3 x 8.7 x 3.9 inches, fitting easily into tight shower spaces. It activates at a low 13 PSI, making it suitable for standard residential plumbing pressure.
Pros
- Compact dimensions of 5.3 x 8.7 x 3.9 inches
- Lightweight 2.75 lbs build for easy mounting
- Low activation pressure of 13 PSI
- Instant hot water with 10°F to 23°F rise
Cons
- Limited temperature rise of 10°F to 23°F
- Requires a dedicated 30-amp breaker
- Single shower head output only
Good fit if
- You need a compact unit for a small bathroom
- You have existing 110V wiring available
- You want a lightweight heater for easy installation
Skip if
- You need a high temperature rise for cold climates
- You do not have a 30-amp breaker available
- You require hot water for multiple fixtures
Verdict: MAREY Mini Marey Electric Shower Heater is a practical solution for single-shower applications where space is limited. It fits buyers who need a simple, low-pressure electric heater for a bathroom sink or shower.
Marey GA24CSALP 7.5 GPM Propane Heater
Best for: Full-house propane hot water supply
- Fuel Type
- Liquid Propane
- Flow Rate
- 7.5 GPM
- BTU
- 170,000 BTU
- Installation Location
- Indoor
- Certification
- CSA
- Dimensions
- 26.2 x 17.1 x 7.3 inches
View on Amazon: Marey GA24CSALP 7.5 GPM Propane Heater Affiliate link
This MAREY gas tankless water heater delivers 170,000 BTU and a 7.5 GPM flow rate. It runs on liquid propane and is designed for indoor installation. The unit features CSA certification and includes safety layers like overheat and anti-freezing protection. Its compact wall-mounted design saves space. You get unlimited hot water for multiple use points simultaneously. This model suits homes needing high-capacity propane heating.
Pros
- 170,000 BTU heating capacity
- 7.5 GPM flow rate
- CSA certified for safety
- Indoor installation design
- 5-year limited warranty
Cons
- Not recommended for elevations above 2,000 ft
- Requires professional installation
- Heavier than electric shower units
Good fit if
- You need high flow for multiple fixtures
- You have existing propane supply
- You require indoor certified heating
Skip if
- You live above 2,000 ft elevation
- You need outdoor installation
- You prefer electric power sources
Verdict: Marey GA24CSALP 170k BTU Propane Heater provides robust 7.5 GPM output for full-house needs. It fits homes with propane access and indoor venting requirements.
Specifications side by side
| Spec | MAREY Mini Marey Electric Shower Heater | Marey GA24CSALP 7.5 GPM Propane Heater |
|---|---|---|
| Fuel Type | Electric | Liquid Propane |
| Flow Rate | not stated | 7.5 GPM |
| BTU | not stated | 170,000 BTU |
| Wattage | 2.6 kW | not stated |
| Installation Location | not stated | Indoor |
| Voltage | 110V | not stated |
| Certification | not stated | CSA |
| Dimensions | 5.3" x 8.7" x 3.9" | 26.2 x 17.1 x 7.3 inches |
| Weight | 2.75 pounds | 40.8 pounds |
| Color | Chrome And White | White |
| Model | Mini Marey | GA24CSALP |
| Size | not stated | 24L |
MAREY Tankless Water Heater Models
MAREY offers two distinct tankless water heaters for different household needs. The Mini Marey Electric Shower Heater is a compact unit designed for single shower head installations. It measures 5.3 by 8.7 inches and weighs only 2.75 pounds. This model suits buyers with limited space who need a simple electric solution for a bathroom sink or shower.
The Marey GA24CSALP 7.5 GPM Propane Heater serves full-house needs. It delivers 7.5 GPM output and is intended for indoor installation. This unit requires propane access and meets specific venting requirements. Choose the electric model for small, localized hot water needs. Select the propane heater for whole-home supply.
Who MAREY Tankless Heaters Suit
MAREY’s current lineup spans from point-of-use fixtures to whole-home heaters. You can choose the Mini Marey for tight spaces like a single shower, or the GA24CSALP for full-house propane supply. The electric model is a small chrome and white box, while the propane unit is a larger white panel. There are no gas electric hybrids or outdoor-rated models in this list. You also will not find a gas-powered electric shower heater. If you need a mid-size electric whole-home unit, MAREY does not currently offer one in this selection.
How to choose the right MAREY unit
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Match fuel to home access
Your available energy source dictates which MAREY model fits your home. The GA24CSALP runs on propane, requiring a tank and indoor venting setup. This makes it suitable for homes with existing propane infrastructure. If you lack gas lines, this unit is not an option. Instead, consider the Mini Marey, which operates on electricity. Electric units plug into standard circuits, eliminating the need for gas lines or complex venting. Choose propane for higher output or electricity for simpler installation in areas without gas access.
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Check flow rate needs
Flow rate determines how many fixtures can run simultaneously. The GA24CSALP delivers 7.5 GPM, supporting full-house hot water needs. This capacity handles multiple showers or appliances at once. The Mini Marey lacks a stated GPM in the data, but its design targets single shower head installations. If you need hot water for a sink and shower together, the propane model is necessary. For a single bathroom fixture, the electric unit provides sufficient flow. Always verify your household demand before selecting the unit size.
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Measure space carefully
Physical dimensions determine where you can mount the heater. The Mini Marey is extremely compact, measuring 5.3 by 8.7 inches and weighing just 2.75 pounds. This small footprint allows installation in tight spaces like under sinks or in small closets. The GA24CSALP is significantly larger, measuring 17.1 by 26.2 inches and weighing 40.8 pounds. It requires ample wall space and structural support. Measure your installation area before purchasing. Ensure the larger propane unit fits your designated location without obstructing access.
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Plan venting requirements
Gas units require proper ventilation to exhaust combustion gases safely. The GA24CSALP is rated for indoor installation, meaning you must install appropriate venting pipes to the outside. This adds to the installation complexity and cost. Electric units like the Mini Marey do not produce combustion gases, so they require no venting. This makes them easier to install in interior rooms. Check your local codes for venting specifications. If your home lacks existing gas venting, the electric option may be the only viable choice.
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Verify electrical capacity
Electric tankless heaters draw significant power from your home’s electrical system. The Mini Marey operates on electricity, so you must ensure your circuit can handle the load. High-wattage units may require dedicated circuits and upgraded wiring. The data does not list wattage or voltage for the electric model, so consult the manual for exact electrical requirements. The propane GA24CSALP does not rely on high electrical draw for heating, though it may need power for controls. Always have a qualified electrician assess your panel capacity before installing an electric unit.
Frequently asked questions
Can the MAREY Mini Marey heat water for multiple showers at once?
No, the Mini Marey is designed for single-shower head installations only. Its compact dimensions of 5.3 by 8.7 inches limit its capacity to a single point of use. It works well for a bathroom sink or one shower, but it cannot supply hot water to multiple fixtures simultaneously.
Does the MAREY GA24CSALP require outdoor installation?
No, the GA24CSALP is built for indoor installation. It uses propane as its fuel source and requires an indoor venting setup. This model delivers 7.5 GPM, making it suitable for full-house hot water needs in homes with existing propane infrastructure and proper ventilation.
How heavy is the MAREY Mini Marey electric heater?
The Mini Marey weighs 2.75 pounds. Its lightweight design makes it easy to mount in tight spaces. The unit measures 5.3 inches in width and length, with a height of 8.7 inches, fitting comfortably above a sink or shower head without taking up much room.
What is the flow rate of the MAREY propane heater?
The MAREY GA24CSALP provides a flow rate of 7.5 GPM. This output supports full-house hot water demands. It is a robust option for households needing consistent hot water supply across multiple fixtures, provided the home has access to propane and adequate indoor venting.
Is the MAREY GA24CSALP suitable for a single shower?
Yes, but it is overkill for just one shower. The GA24CSALP delivers 7.5 GPM, which is intended for full-house propane hot water supply. If you only need water for a single shower, the smaller Mini Marey electric model is a more practical and space-efficient choice.
What color options are available for MAREY tankless water heaters?
The Mini Marey comes in chrome and white. The GA24CSALP propane heater is white. These color options allow the units to blend into most bathroom or utility room decors. The electric model is smaller, while the propane unit is larger and heavier at 40.8 pounds.