5 Best Water Heater for Apartment [In 2025]

Finding the right water heater for your apartment can be a challenge, as you need to balance factors like energy efficiency, water output, and physical size. In this comprehensive review, we’ll take a closer look at some of the best water heater options for apartment living, considering their key features, pros, and cons to help you make an informed decision.

5 Best Water Heater for Apartment Reviews

Natural Gas Tankless Water Heater, MIZUDO Indoor Installation Max 3.6 GPM 80,000 BTU On Demand Instant Hot Water Heater

Overview

The MIZUDO Natural Gas Tankless Water Heater is a compact and efficient option for apartments, providing instant hot water on demand. With a max flow rate of 3.6 GPM and 80,000 BTU, it can serve 2-3 low-flow fixtures simultaneously.

Specs

• Continuous Hot Water for Multi-Tasking
• Energy Efficient Operation
• Third-Party Certified Safety
• Integrated Protection System
• US Home Compatibility

Pros

• Provides instant hot water with fast heating and high flow rate
• Compact and space-saving design for apartments
• Energy-efficient operation to save on utility bills
• Comprehensive safety features and certifications

Cons

• Requires professional installation for gas hookup
• May not provide enough hot water for larger households

Customer Reviews

Customers find the MIZUDO tankless water heater to be a reliable and efficient option for small spaces. They appreciate the consistent temperature control, quick heating, and energy-saving benefits. The overall quality and value for money are also praised by reviewers.

2000W Immersion Water Heater, Portable Water Heater Electric with Real-Time LCD Thermometer Control

Overview

The 2000W Immersion Water Heater is a versatile and portable electric option that can quickly heat up to 5 gallons of water in just a few minutes. It’s designed for use in various containers, from buckets to bathtubs, making it a convenient choice for apartments, RVs, and other small spaces.

Specs

• 2000W Fast Heating
• Easy To Use
• Multi Functional Use
• Easy To Carry
• What You Will Get

Pros

• Rapid heating for fast hot water
• Versatile usage in different containers
• Compact and portable design
• Comes with additional accessories

Cons

• Limited continuous use time (max 3 hours)
• May not provide enough hot water for larger tasks

Customer Reviews

Customers find the immersion water heater easy to use and appreciate its fast heating capabilities. However, reviews are mixed regarding its overall functionality and water temperature consistency.

FOGATTI Tankless Water Heater Propane, Indoor Installation Up to 4.0 GPM, 90,000 BTU Instant Hot On demand Water Heater

Overview

The FOGATTI Tankless Water Heater Propane is a high-performance option that can deliver up to 4.0 GPM of hot water, making it suitable for apartments with 2-3 simultaneous users. Its compact design and advanced safety features make it a reliable choice for indoor installation.

Specs

• Endless Hot Water
• Energy Efficient
• Safety & Durability
• Stable Temperature Control
• Compact Design
• Easy Installation

Pros

• Provides a high flow rate for multiple fixtures
• Energy-efficient operation with reduced gas consumption
• Comprehensive safety features and certifications
• Compact size for easy installation in apartments

Cons

• Mixed customer feedback on functionality and water temperature
• Potential installation issues with the connections

Customer Reviews

Customers generally find the FOGATTI tankless water heater easy to install, but have mixed experiences with its overall functionality and water temperature consistency. Some report great performance, while others encountered issues with the unit.

Under Sink Instant Hot Water Heater, 2.5 Gallon Mini Tank Water Heaters with LED Display

Overview

The Under Sink Instant Hot Water Heater is a compact and efficient mini-tank option designed for installation under the sink. With a 2.5-gallon capacity and 1500W heating power, it can provide quick hot water for small apartments and RVs.

Specs

• Upgraded mini tank Water Heater Design
• Rapid Heating and Recovery
• User Friendly Small Water Heater
• Safe and Durable
• Adjustable Temperature and Long-lasting insulation
• Widely Use Under Sink Water Heater

Pros

• Compact and space-saving design for under-sink installation
• Rapid heating with a 4-6 minute recovery time
• Adjustable temperature control and LED display
• Durable construction with safety features

Cons

• Limited capacity may not be suitable for larger households
• Potential compatibility issues with plumbing connections

Customer Reviews

Customers generally find the under-sink water heater to be a reliable and easy-to-install option, with quick heating and good temperature control. While most report no issues, a few mention potential leakage or connection problems.

GE Appliances 18 Gallon Versatile Plug and Play Electric Water Heater

Overview

The GE Appliances Electric Point of Use Water Heater is a versatile and compact option that can be installed in various locations, providing hot water where it’s needed most. With an 18-gallon capacity and simple plug-and-play design, it’s a convenient choice for apartments, RVs, and other small spaces.

Specs

• Whole Home Flexibility
• Easy Installation
• Compact Design
• Hot Water Booster
• Adjustable Thermostat
• Stainless Steel Heating Element
• Anode Rod

Pros

• Versatile installation options for various locations
• Compact and space-saving design
• Adjustable temperature control
• Durable stainless steel construction

Cons

• Limited capacity compared to whole-home water heaters
• May not provide enough hot water for larger households

Customer Reviews

Customer reviews for the GE Appliances Electric Point of Use Water Heater are limited, as it is a relatively new product. However, the features and specifications suggest it could be a reliable and convenient option for apartments and small living spaces.

Buying Guide: Choosing the Best Water Heater for Your Apartment

Tank vs. Tankless

• Tank water heaters have a storage tank that holds a limited amount of hot water, while tankless models heat water on demand.
• Tankless heaters are generally more energy-efficient and space-saving, making them a better fit for apartments.
• Tank heaters may be more suitable for larger households with higher hot water demand.

Capacity and Flow Rate

• Consider the number of fixtures and simultaneous hot water users in your apartment to determine the required capacity and flow rate.
• Tankless heaters are rated by their maximum flow rate (GPM), while tank heaters have a fixed capacity (gallons).
• Ensure the water heater can meet the hot water needs of your apartment, especially if you have multiple bathrooms or larger appliances.

Energy Efficiency

• Look for water heaters with high energy efficiency ratings, such as Energy Factor (EF) or Uniform Energy Factor (UEF).
• Energy-efficient models can save you money on utility bills and reduce your environmental impact.
• Tankless and mini-tank water heaters are generally more energy-efficient than traditional tank-style units.

Safety and Certifications

• Ensure the water heater has the necessary safety certifications, such as UL or CSA, to meet local building codes and regulations.
• Look for features like overheat protection, freeze protection, and flame failure safeguards to ensure safe operation.
• Consider the installation requirements and whether you need a professional to handle the setup.

Size and Placement

• Measure the available space in your apartment to determine the maximum size and dimensions of the water heater.
• Tankless and mini-tank heaters are generally more compact and can be installed in tight spaces, such as under the sink or in a closet.
• Ensure the water heater is placed in a convenient location near the fixtures or appliances that require hot water.

FAQ

1. What is the difference between a tankless and a tank water heater?

Tankless water heaters heat water on demand, while tank water heaters have a storage tank that holds a limited amount of hot water. Tankless models are generally more energy-efficient and space-saving, making them a better fit for apartments, while tank heaters may be more suitable for larger households with higher hot water demand.

2. How do I determine the right size water heater for my apartment?

The size of the water heater you need depends on the number of fixtures and simultaneous hot water users in your apartment. Consider the flow rate (GPM) for tankless heaters or the capacity (gallons) for tank heaters to ensure it can meet your hot water demands.

3. Are tankless water heaters more energy-efficient?

Yes, tankless water heaters are typically more energy-efficient than traditional tank-style heaters. They only consume energy when hot water is needed, rather than constantly maintaining a stored supply of hot water. This can lead to significant savings on your utility bills.

4. Do I need a professional to install a water heater in my apartment?

The installation requirements vary depending on the type of water heater and local building codes. Tankless and mini-tank heaters may be easier to install, but gas-powered models often require professional installation for the gas hookup. It’s recommended to consult with a licensed plumber or electrician to ensure the water heater is properly and safely installed.

5. How do I choose between a gas or electric water heater?

The choice between a gas or electric water heater depends on the available utilities in your apartment, as well as your personal preferences and budget. Gas heaters are generally more energy-efficient but require a gas line, while electric models are simpler to install but may have higher operating costs. Consider factors like energy efficiency, installation requirements, and ongoing utility expenses when making your decision.

Conclusion

Choosing the best water heater for your apartment requires careful consideration of factors like energy efficiency, hot water output, and physical size. The options reviewed in this guide, including tankless, mini-tank, and plug-and-play models, offer a range of features and benefits to suit different apartment living needs. By weighing the pros, cons, and customer feedback for each product, you can make an informed decision and ensure your apartment has a reliable and efficient hot water solution.