As an Amazon Associate I earn from qualifying purchases.


Fully-automatic surface mount thermostats. Glass-lined steel tank to help prevent corrosion. Easy-to-use plastic drain valve for maintenance. Double heating elements conserve energy. Ideal for replacement projects. Heavy gauges steel tank for extra years of trouble-free service.

Too bad you don’t have an airthereal electric Tankless Water to provide endless hot water on demand with no preheating, temperature fluctuations, or running out of hot water in the tank. Save space: that water heater in the basement or utility closet takes up a ton of space.
The electric and fluid systems are completely separated to prevent electric leakage and water pipe corrosion. Important note: in order to install 18kw electric tankless water heater it requires 240 Voltage, 2 x 40 AMP Circuit Breaker Size and a set of 2 x 8AWG/2 wires. Endless hot water: imagine you are the last one in your family to take a shower before heading out for the day.

25" w x 61. 60" h x 18. 25" l. Fully-automatic surface mount thermostats. Temperature and pressure relief valve included. Convenience: factory-installed electric hot and cold water connections for extended tank life. Ideal for replacement projects. Incoloy elements for a long-lasting unit.




Dimensions : 13. 75 w x 13. 75 h x 1075 d inches. Amps 12a, volts VAC 120 Thermal efficiency is 98%. Independent installation: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source.

1. A. O. Smith
#ad
50 gal, A.O. Smith ENS-50 ProMax Short Electric Water Heater
#adA. O. Smith #ad - Meets all current regulations set forth by the National Appliance Energy Conservation Act NAECA. Dynaclean diffuser dip tube helps reduce lime and sediment buildup while maximizing hot water output; made from long-lasting PEX cross-linked polymer.More information #ad
Permaglas glass coating protects steel tank from corrosion and maximizes tank life. Coregard anode rode aluminum anode with stainless steel core protects tank against corrosion longer than ordinary steel anodes. Durable, tamper-resistant brass drain valve.Brand | A. O. Smith #ad |
Manufacturer | Trumbull Industries #ad |
Height | 50 Inches |
Length | 24 Inches |
Width | 24 Inches |
Part Number | ENS-50 |
Model | ENS-50 |
Warranty | 6-year limited tank and parts warranty |
More information #ad
2. Rheem
#ad
Gray, Rheem RTEX-24 24kW 240V Electric Tankless Water Heater
#adRheem #ad - Self-modulating power control. 24kw model flow rate: up to 5. 9 gpm for rtex-24. On/off dial control with adjustable digital temperature display. Bottom 3/4" nPT water connections. On demand, consistent and continuous hot water.More information #ad
Brand | Rheem #ad |
Manufacturer | Rheem #ad |
Height | 3.5 Inches |
Length | 18.25 Inches |
Weight | 17.8 Pounds |
Width | 14.5 Inches |
Part Number | RTEX-24 |
Model | RTEX-24 |
More information #ad
3. Bosch Thermotechnology
#ad
Bosch Thermotechnology 50-Gallon Standard Electric Storage Water Heater Tronic 5000T
#adBosch Thermotechnology #ad - Efficiency: hfo foam insulated, reducing fuel costs and increasing energy efficiency. Factory-installed heat traps reduce heat loss. Warranty: 10-year tank and parts limited warranty.Fully-automatic surface mount thermostats. Glass-lined steel tank to help prevent corrosion. Easy-to-use plastic drain valve for maintenance. Double heating elements conserve energy. Ideal for replacement projects. Heavy gauges steel tank for extra years of trouble-free service.
More information #ad
Convenience: factory-installed electric hot and cold water connections for extended tank life. Dielectric heat trap. Application: dimensions : 22. 25" w x 48. 75" h x 22. 25" lperfect size for a maintenance closet, access closet under the stairs, crawl space. Incoloy elements for a long-lasting unit. Temperature and pressure relief valve included. Durability: two magnesium anode rods for extra tank protection.Brand | Bosch Thermotechnology #ad |
Manufacturer | Bosch Thermotechnology #ad |
Height | 48.75 Inches |
Length | 22.25 Inches |
Weight | 115.7 Pounds |
Width | 22.25 Inches |
Part Number | 7738007320 |
Model | 7738007320 |
Warranty | 10 years. |
More information #ad
4. AIRTHEREAL
#ad
Self Modulates to Save Energy Use, for 2 Showers, Endless On-Demand Hot Water, Airthereal Electric Tankless Water Heater 18kW, Evening Tide series, 240Volts, Small Enough to Install Anywhere
#adAIRTHEREAL #ad - Safe to use: with high temp protection, dry heating protection, and electrical leakage protection you can rest easily knowing you have safe, on-demand hot water to use on your schedule. You turn on the faucet and the water is freezing cold. This wall-mounted water heater uses 90% less space than a traditional hot water heater with a tank.Too bad you don’t have an airthereal electric Tankless Water to provide endless hot water on demand with no preheating, temperature fluctuations, or running out of hot water in the tank. Save space: that water heater in the basement or utility closet takes up a ton of space.
More information #ad
Save energy: water is only heated when you need it, not stored in a hot water tank. Please check to confirm that your breaker panel meet these specifications. The self-modulating temperature technology only uses energy to heat up water while you are using it to save up to 50% on water heating costs compared to a typical tank water heater. The electric and fluid systems are completely separated to prevent electric leakage and water pipe corrosion. Important note: in order to install 18kw electric tankless water heater it requires 240 Voltage, 2 x 40 AMP Circuit Breaker Size and a set of 2 x 8AWG/2 wires. Endless hot water: imagine you are the last one in your family to take a shower before heading out for the day.
Brand | AIRTHEREAL #ad |
Manufacturer | Airthereal #ad |
Height | 3.43 Inches |
Length | 17.25 Inches |
Width | 12.22 Inches |
Part Number | EVT-18K |
Model | 18kW |
More information #ad
5. Bosch Thermotechnology
#ad
Bosch Thermotechnology 40-Gallon Tall Electric Storage Water Heater, Gray
#adBosch Thermotechnology #ad - Dielectric heat trap. Double heating elements conserve energy. Efficiency: hfo foam insulated, reducing fuel costs and increasing energy efficiency. Application: dimensions : 18.25" w x 61. 60" h x 18. 25" l. Fully-automatic surface mount thermostats. Temperature and pressure relief valve included. Convenience: factory-installed electric hot and cold water connections for extended tank life. Ideal for replacement projects. Incoloy elements for a long-lasting unit.
More information #ad
Easy-to-use plastic drain valve for maintenance. Durability: two magnesium anode rods for extra tank protection. Warranty: 10-year tank and parts limited warranty. Factory-installed heat traps reduce heat loss. Heavy gauges steel tank for extra years of trouble-free service. Glass-lined steel tank to help prevent corrosion. Perfect size for a maintenance closet, access closet under the stairs, crawl space.Brand | Bosch Thermotechnology #ad |
Manufacturer | Bosch Thermotechnology #ad |
Height | 61.6 Inches |
Length | 18.25 Inches |
Weight | 103.7 Pounds |
Width | 18.25 Inches |
Part Number | 7738007321 |
Model | 7738007321 |
Warranty | 10 years |
More information #ad
6. Rheem
#ad
Rheem 18kW 240V Tankless Electric Water Heater
#adRheem #ad - Durable copper immersion two heating elements, field Serviceable. Flow rate- up to 4. 4 gpm. External digital thermostatic control with LED display +/1 degree accuracy.More information #ad
Threaded for easy replacement, simple installation, digital temperature display. Most advanced self-modulation, adjust power to meet hot water demand. Simple installation – bottom 3/4 inch NPT water connections.Brand | Rheem #ad |
Manufacturer | Rheem #ad |
Height | 3.5 Inches |
Length | 18.5 Inches |
Weight | 14.78 Pounds |
Width | 14.5 Inches |
Part Number | RTEX-18 |
Model | RTEX-18 |
More information #ad
7. Rheem
#ad
Rheem 11kW 240V Tankless Electric Water Heater
#adRheem #ad - Side 1/2" npt water connections. On demand, consistent and continuous hot water. On/off dial control with adjustable digital temperature display. Self-modulating power control. 11kw model flow rate: up to 2. 68 gpm.More information #ad
Brand | Rheem #ad |
Manufacturer | Rheem #ad |
Height | 3.63 Inches |
Length | 12.63 Inches |
Weight | 7 Pounds |
Width | 8.25 Inches |
Part Number | RTEX-11 |
Model | RTEX-11 |
More information #ad
8. Rinnai
#ad
6.5 GPM, Rinnai V65eN Natural Gas Tankless Hot Water Heater
#adRinnai #ad - Optimal water pressure: high-performance up to 6. 5 gpm hot water flow rate for a powerful, constant stream. Endless hot water: enjoy unlimited hot water flow throughout the house; compact, durable, and easy to install; professional installation recommended.More information #ad
Energy and space efficient: Space-saving design conserves energy as it heats only when necessary. Enhanced scale detection lessens possibility of serious, long-term damage to unit. Guaranteed to last: 10-, 5-, labor, and 1-year residential factory warranty for heat exchanger, and parts, respectively.Brand | Rinnai #ad |
Manufacturer | Rinnai #ad |
Height | 13 Inches |
Length | 17.5 Inches |
Weight | 47.4 Pounds |
Width | 30 Inches |
Part Number | V65EN |
Model | V65EN |
Warranty | See Manufacturer |
More information #ad
9. Bosch Thermotechnology
#ad
Shelf, Eliminate Time for Hot Water, Wall or Floor Mounted, Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon ES2.5
#adBosch Thermotechnology #ad - Long lasting quality: this electric water heater is easy to maintain and has premium glass-lined material for a long service life. 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.Dimensions : 13. 75 w x 13. 75 h x 1075 d inches. Amps 12a, volts VAC 120 Thermal efficiency is 98%. Independent installation: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source.
More information #ad
Convenient hot water heater: 2. 5 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. 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.Brand | Bosch Thermotechnology #ad |
Manufacturer | BOSCH THERMOTECHNOLOGY #ad |
Height | 13.75 Inches |
Length | 13.75 Inches |
Weight | 15.5 Pounds |
Width | 10.75 Inches |
Part Number | 7738004996 |
Model | 7738004996 |
Warranty | 6 year warranty on unit, 2 year warranty on parts |
More information #ad
10. Rheem
#ad
GRAY, Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater
#adRheem #ad - Simple installation – 1/2 NPT adapters included; side 1/2 inch Compression water connections. Water-saver shower Head – 1. 5 gpm. 99. 8% energy efficient. 54 a. Threaded for easy replacement, simple installation, digital temperature display 54 A.More information #ad
External adjustable digital thermostatic control with LED display +/1 degree accuracy. External controls to adjust temperature in increments of 1°f. 13kw model flow Rate: up to 3. 17 gpm. Durable copper immersion two heating elements, field Serviceable. Self-modulating power control.Brand | Rheem #ad |
Manufacturer | Rheem #ad |
Height | 3.63 Inches |
Length | 12.63 Inches |
Weight | 0 Pounds |
Width | 8.25 Inches |
Part Number | RTEX-13 |
Model | RTEX-13 |
More information #ad