10 Best Home Water Heater of December 2025
List of Top Rated Home Water Heater from thousands of customer reviews & feedback.
Updated On Dec 2025
468 Reviews Studied
1
EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology,... Read Review
- Savings of up to 50% on water heating costs. Dimensions :17H x 17W x 3.625D inches ;Pipes fittings :3/4 inch NPT
- Digital temperature control in 1-degree increments allows control of hot water; Activation Flow: 0.3 GPM
- Copper and stainless components designed for efficiency, durability and easy replacement.
- Compact size saves valuable storage space, while the stylish and advanced design is pleasing to the eye and Copper and stainless components designed for efficiency, durability and easy replacement.
- Prior to purchase & installation, please verify that this model is the right size for your hot water needs and electrical requirements. Electrical requirements: 27 kW, 240 volts, (3) 40 required breakers, 112.5 maximum power (AMP), (3) 8 required wire.Amperage Draw:113 A
- Required Breaker Quantity: Three 40 Amp Double Pole
- Recommended Electrical Panel: 200 Amps
- NEVER run out of hot water with an ECOSMART tankless water heater.
- Save up to 12 cubic feet of storage space.
- Digital temperature control in 1-degree increments gives users complete control of hot water
2
Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, GRAY Read Review
- External adjustable digital thermostatic control with LED display (+/1 degree accuracy
- Durable Copper immersion two heating elements, field Serviceable.Self-modulating power control
- Simple installation – 1/2 NPT adapters included; side 1/2 inch Compression water connections
- 99.8% energy efficient. External controls to adjust temperature in increments of 1°f. Water-Saver Shower Head – 1.5 GPM
- Threaded for easy replacement, simple installation, digital temperature display 54 A. 13kW Model Flow Rate: up to 3.17 GPM
- 54 A
3
Rheem 240V 2 Heating Chambers RTEX-18 Residential Tankless Water Heater, small, GREY Read Review
- External digital thermostatic control with LED display (+/1 degree accuracy)
- Most advanced self-modulation, adjust power to meet hot water demand
- Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
- Simple installation – bottom 3/4 inch NPT water connections
- Threaded for easy replacement, simple installation, digital temperature display
4
Rheem 240V 3 Heating Chambers RTEX-24 Residential Tankless Water Heater, GRAY Read Review
- External digital thermostatic control with LED display (+/1 degree accuracy)
- Most advanced self-modulation, adjust power to meet hot water demand
- Durable Copper immersion three heating elements, field Serviceable
- Simple installation – bottom 3/4 inch NPT water connections.Threaded for easy replacement, simple installation, digital temperature display
- Flow Rate: up to 5.9 GPM
5
Atmor 13kw/240v, 2.25 GPM Tankless Water Heater Electric, Multiple Point-Of-Use Water Heater with Pressure Relief Device... Read Review
- IDEAL for a FULL Bathroom - Sink and Shower Combination
- Recommended flow rate 2. 25 GPM (Gallons per Minute). Water saver shower head (1. 5 GPM) highly recommended for optimal performance when used as a full bathroom solution
- Requires a direct connection to a 60 Amp single-phase, double pole breaker. Required wire size: 4 AWG. 240 volts.
- 3 Settings: High - 13kw, Medium - 8. 5kw, Low - 4. 5 kwludes a Pressure Relief Device (PRD)
- Conserves energy - activates only with water flow at 0. 5 GPM
6
Bosch Electric Mini-Tank Water Heater Tronic 3000 T 4-Gallon (ES4) - Eliminate Time for Hot Water - Shelf, Wall or Floo... Read Review
- CONVENIENT HOT WATER HEATER: 4 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 13.75 W x 13.75 H x 13.5 D Inches
- LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium glass-lined material for a long service life. (Amps 12A, Volts (VAC) 120)
- INDEPENDENT INSTALLATION: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source
- FAST RECOVERY RATE: Eliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time)
- EASILY MOUNTED: Can be shelf, wall or floor mounted (bracket included); simply tap into the cold water line and install the water heater directly at the sink to provide hot water
7
American Standard CE-12-AS 12 gallon Point of Use Electric Water Heater Read Review
- Heavy gauge Steel tank
- Inner Dura glas lined tank fired at 1,600°f for optimum protection from the effects of corrosion
- Factory installed Brass drain valve on all models allows for easy draining of the unit which reduces sediment deposits extending tank life
- Factory installed Brass temperature/pressure relief valve
- American standard point-of-use electric water heaters are all certified at 300 psi test pressure and 150 psi working pressure. All tanks are also 100% hydrostatically tested at the factory
8
American Standard CE-20-AS 19 Gallon Point Of Use Electric Water Heater Read Review
- Heavy gauge Steel tank
- Inner Dura glas lined tank fired at 1,600°f for optimum protection from the effects of corrosion
- Factory installed Brass drain valve on all models allows for easy draining of the unit which reduces sediment deposits extending tank life
- Factory installed Brass temperature/pressure relief valve
- American standard point-of-use electric water heaters are all certified at 300 psi test pressure and 150 psi working pressure. All tanks are also 100% hydrostatically tested at the factory
9
EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented Self Modulating Technology Read Review
- Lifetime warranty
- Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
- Never run out of hot water with an ECOSMART tankless water heater
- Patented Self Modulating Technology and design
- ECOSMART tankless water heaters are 99.8-percent energy efficient.Uniform Energy Factor:0.98
10
Ecosmart POU 3.5 Point of Use Electric Tankless Water Heater, 3.5KW@120-Volt Read Review
- Can provide hot water for one sink at 0.5 GPM in warmer climates
- Requires 1 x 30 amp breaker and 10 AWG wire
- For one sink at 0.5 GPM in colder climates the POU 6 is recommended
- Amperage Draw 29 amp. kW - 3.5 kW
- Connection Fittings 1/2" NPT