Best Apollo Water Heater in 2025
Updated on July 2025
#1
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15% Off
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- Mini-tank water heater with a capacity of 2.5 gallons, designed for installation under the sink.
- Features premium glass-lined construction for improved durability and thermal efficiency of 98%.
- Requires a 120V outlet for convenient independent installation, compatible with existing plumbing.
- Offers fast recovery, providing hot water on demand for up to two sinks simultaneously.
- Versatile installation options: can be shelf, wall, or floor mounted with included bracket.
- Operates at a wattage of 1440W for efficient energy use.
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- Mini-tank water heater with a capacity of 2.5 gallons, designed for installation under the sink.
- Features premium glass-lined construction for improved durability and thermal efficiency of 98%.
- Requires a 120V outlet for convenient independent installation, compatible with existing plumbing.
- Offers fast recovery, providing hot water on demand for up to two sinks simultaneously.
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#2
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- Durable 0.04 inch (1.1mm) thick 304 stainless steel construction with laser welding for rust resistance and leak prevention.
- 1500W 'L' shaped heating element achieves desired temperature in 8-15 minutes for simultaneous use at two sinks.
- Compact 2.5-gallon tank provides efficient heating, reaching up to 149℉ with a built-in smart chip for temperature control.
- Space-saving design suitable for installation under sinks, in RVs, and with appliances like washers and dishwashers.
- Easy installation with a 1/2'' FPI connection and 120V electrical requirements, supporting a maximum water pressure of 108 PSI.
- Includes necessary accessories for installation, such as stainless steel hoses and a pressure relief valve.
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- Durable 0.04 inch (1.1mm) thick 304 stainless steel construction with laser welding for rust resistance and leak prevention.
- 1500W 'L' shaped heating element achieves desired temperature in 8-15 minutes for simultaneous use at two sinks.
- Compact 2.5-gallon tank provides efficient heating, reaching up to 149℉ with a built-in smart chip for temperature control.
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#3
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- Pressure relief preset at 50 psi to manage excess pressure safely
- 3/4" male NPT inlet for compatibility with female NPT connections
- Constructed from ASTM B584 bronze and stainless steel for durability and corrosion resistance
- Operates at maximum temperature of 250 degrees F for high-temperature applications
- ASME certified for compliance in Section IV water heating systems
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- Pressure relief preset at 50 psi to manage excess pressure safely
- 3/4" male NPT inlet for compatibility with female NPT connections
- Constructed from ASTM B584 bronze and stainless steel for durability and corrosion resistance
- Operates at maximum temperature of 250 degrees F for high-temperature applications
- ASME certified for compliance in Section IV water heating systems
#4
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- Instant hot water heater operates at 120V with 3.5kW heating technology for consistent hot water flow without the need for preheating tanks.
- Compact under-sink design fits in small spaces (6.9"x8.1"x2.5") and connects easily with 1/2" NPT connections, requiring only a dedicated 30A circuit.
- Smart WiFi control allows for remote operation and temperature adjustments (80°F-130°F) via an app or voice commands, compatible with Alexa and Google Home.
- Energy-efficient design specifically for single faucets, this tankless water heater heats water on demand, saving energy versus traditional tank heaters.
- Anti-scale protection features a separate heating element to reduce scale buildup and corrosion, ensuring optimal performance and less maintenance.
- Includes six safety features: IPX4 waterproof rating, anti-scald technology, dry-fire prevention, flame-retardant housing, low-flow protection, and voltage protection for enhanced safety.
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- Instant hot water heater operates at 120V with 3.5kW heating technology for consistent hot water flow without the need for preheating tanks.
- Compact under-sink design fits in small spaces (6.9"x8.1"x2.5") and connects easily with 1/2" NPT connections, requiring only a dedicated 30A circuit.
- Smart WiFi control allows for remote operation and temperature adjustments (80°F-130°F) via an app or voice commands, compatible with Alexa and Google Home.
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#5
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- Constructed from thick 304 stainless steel with seamless welding for leak-proof performance.
- 1500W L-shaped heating element heats water rapidly to the desired temperature in 5-8 minutes, minimizing wait times.
- Compact dimensions (11.34" H x 11.34" L x 10.24" W) allow for versatile installation in small spaces, including under sinks or in RVs.
- User-friendly installation with included stainless steel pipes, pressure relief valve, and adjustable temperature control (86℉ to 149℉).
- Equipped with multiple safety features, including overheat protection and UL certification, ensuring safe operation and durability.
- Highly energy-efficient with a heating efficiency of up to 95%, and smart insulation mode to maintain temperature while saving energy.
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- Constructed from thick 304 stainless steel with seamless welding for leak-proof performance.
- 1500W L-shaped heating element heats water rapidly to the desired temperature in 5-8 minutes, minimizing wait times.
- Compact dimensions (11.34" H x 11.34" L x 10.24" W) allow for versatile installation in small spaces, including under sinks or in RVs.
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#6
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- 12-gallon capacity for efficient water storage
- Incorporates a heat exchanger for improved heating performance
- Operates on standard 115V electrical supply
- Constructed with a glass-lined steel tank for durability
- Features a rust-proof jacket for long-lasting protection
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- 12-gallon capacity for efficient water storage
- Incorporates a heat exchanger for improved heating performance
- Operates on standard 115V electrical supply
- Constructed with a glass-lined steel tank for durability
- Features a rust-proof jacket for long-lasting protection
#7
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- 16-inch long, 1/2-inch FIP stainless steel water hoses with included vent valve
- Cold water pipe features a safety valve rated at 0.75MPa, automatically draining if home water pressure exceeds this value
- Rust-resistant stainless steel construction with anti-leakage plug and multiple safety protections, ideal for kitchens, bars, schools, hospitals, and RVs
- Energy-efficient 2.5-gallon point-of-use mini-hot water heater with 98% thermal efficiency, capable of heating water up to 149℉ using a smart chip for temperature control
- Provides quick on-demand hot water for up to 2 sinks, heating water in 8-15 minutes to desired temperatures
- Compact design for versatile installation options: shelf, wall, or floor mounted; dimensions 13.0''L x 11.4''W x 10.6''H, weight 9.5lbs
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- 16-inch long, 1/2-inch FIP stainless steel water hoses with included vent valve
- Cold water pipe features a safety valve rated at 0.75MPa, automatically draining if home water pressure exceeds this value
- Rust-resistant stainless steel construction with anti-leakage plug and multiple safety protections, ideal for kitchens, bars, schools, hospitals, and RVs
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#8
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- 3500W heating system delivers hot water within seconds for under/over sink applications; temperature adjustable between 86°F - 131°F, with a standby mode for 24 hours.
- Features self-modulating technology for optimized energy use, achieving 99.8% efficiency; designed for 110-120V hardwired connections.
- Durable construction with a cast aluminum heating element that minimizes scale and corrosion; made with SUS 304 stainless steel tubing for longevity.
- Compact dimensions of 7.9" x 6.4" x 2.5" make it suitable for tight spaces in homes and businesses, such as under cabinets, sinks, salons, and bars.
- Equipped with a touch control panel and digital temperature display that allows for precise adjustments; IP25 waterproof protection and standard 1/2"NPT piping for straightforward installation.
- Ensure compatibility with your setup, requiring 3.5kW 120V hardwired, 32A double pole circuit breaker, minimum 10AWG wire size, and 1/2"NPT water connections.
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- 3500W heating system delivers hot water within seconds for under/over sink applications; temperature adjustable between 86°F - 131°F, with a standby mode for 24 hours.
- Features self-modulating technology for optimized energy use, achieving 99.8% efficiency; designed for 110-120V hardwired connections.
- Durable construction with a cast aluminum heating element that minimizes scale and corrosion; made with SUS 304 stainless steel tubing for longevity.
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#9
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- 20-gallon capacity for hot water storage
- Equipped with a heat exchanger for efficient heating
- Operates at 120V for standard electrical systems
- Model number 172011 for easy identification
- Designed for reliable and durable performance
- Suitable for various hot water applications
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- 20-gallon capacity for hot water storage
- Equipped with a heat exchanger for efficient heating
- Operates at 120V for standard electrical systems
- Model number 172011 for easy identification
- Designed for reliable and durable performance
- Suitable for various hot water applications
#10
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- Electric mini tank water heater rapidly heats water to minimize wait time, with a 316 stainless steel heating element achieving up to 99% heat utilization.
- CE, ROHS, and FCC certified for safety; features a 1.88mm thick stainless steel tank that is pressure-resistant and has a dual enameled layer to prevent rust and leaks.
- Includes safety features such as electrical insulation, a leakage protection plug, auto temperature control, and high-temperature limiting device for comprehensive safety.
- Offers flexible installation options including wall-mount, rack, or floor; features 1/2" NPT water connectors and a 59-inch power cord with plug, requiring a 15-amp breaker.
- Compact design allows for under-sink installation, making it suitable for RVs, camping, kitchens, bathrooms, and more.
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- Electric mini tank water heater rapidly heats water to minimize wait time, with a 316 stainless steel heating element achieving up to 99% heat utilization.
- CE, ROHS, and FCC certified for safety; features a 1.88mm thick stainless steel tank that is pressure-resistant and has a dual enameled layer to prevent rust and leaks.
- Includes safety features such as electrical insulation, a leakage protection plug, auto temperature control, and high-temperature limiting device for comprehensive safety.
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