

Rheem RTEX-13 240-Volt 1-Chamber 13kW Electric Tankless Water Heater
Key item features
- Electric Power: This electric tankless water heater operates at 240 volts and has a power output of 13,000 watts, drawing 54 amps for efficient water heating.
- Continuous Hot Water: Designed to provide endless hot water, this unit is suitable for both commercial and residential general-purpose applications.
- Adjustable Temperature: Features an adjustable digital temperature display, allowing users to set the water temperature between 59 and 140 degrees Fahrenheit.
- Replaceable Element: Equipped with a replaceable heating element, contributing to the longevity and maintainability of the water heater.
- Flow Activation: Requires a minimum flow activation of 0.3 gallons per minute (gpm) to initiate heating, with a 1/2 inch NPT water connection.
- Temperature Performance: Achieves a 59-degree Fahrenheit temperature rise at 1.5 GPM and a 36-degree Fahrenheit rise at 2.5 GPM, with higher flow rates limited by the thermostatic setting.
Specs
- Water heater typeTankless Water Heaters
- Fuel typeElectric
- BrandRheem
- FeaturesAdjustable
- Rec locationIndoor
- Height14.00 in
- Free shipping
Free 30-day returns
(Only one option can be selected at a time)
How do you want your item?
Compare with similar items
| Product | Viewing this itemRheem RTEX-13 240-Volt 1-Chamber 13kW Electric Tankless Water Heater ![]() $265.00 current price $265.0073 out of 5 Stars. 7 reviews | Ecosmart Electric 240 V 13 KW Electric Tankless Water Heater ![]() $249.00 current price $249.0022.5 out of 5 Stars. 2 reviews | Performance 18 KW 3.51 GPM 240-Volt Self-Modulating Electric Tankless Water Heater ![]() $425.00 current price $425.0015 out of 5 Stars. 1 reviews | Rheem Performance 27 Kw Self-Modulating 5.27 GPM Tankless Electric Water Heater ![]() Now $499.00 current price Now $499.00, Was $549.99$549.99 43.3 out of 5 Stars. 4 reviews | Watts Gas Hot Water Recirculating System ![]() $306.95 current price $306.9532.3 out of 5 Stars. 3 reviews |
|---|
| Water heater type | Tankless Water HeatersRheem RTEX-13 240-Volt 1-Chamber 13kW Electric Tankless Water Heater | Tankless Water HeatersEcosmart Electric 240 V 13 KW Electric Tankless Water Heater | Tankless Water HeatersPerformance 18 KW 3.51 GPM 240-Volt Self-Modulating Electric Tankless Water Heater | Tankless Water HeatersRheem Performance 27 Kw Self-Modulating 5.27 GPM Tankless Electric Water Heater | Tankless Water HeatersWatts Gas Hot Water Recirculating System | Tank Water HeatersCuring Tank Heater |
|---|---|---|---|---|---|---|
| Fuel type | ElectricRheem RTEX-13 240-Volt 1-Chamber 13kW Electric Tankless Water Heater | -Ecosmart Electric 240 V 13 KW Electric Tankless Water Heater | -Performance 18 KW 3.51 GPM 240-Volt Self-Modulating Electric Tankless Water Heater | -Rheem Performance 27 Kw Self-Modulating 5.27 GPM Tankless Electric Water Heater | ElectricWatts Gas Hot Water Recirculating System | -Curing Tank Heater |
| Features | AdjustableRheem RTEX-13 240-Volt 1-Chamber 13kW Electric Tankless Water Heater | Energy EfficientEcosmart Electric 240 V 13 KW Electric Tankless Water Heater | Easy InstallationPerformance 18 KW 3.51 GPM 240-Volt Self-Modulating Electric Tankless Water Heater | CompactRheem Performance 27 Kw Self-Modulating 5.27 GPM Tankless Electric Water Heater | Easy InstallationWatts Gas Hot Water Recirculating System | -Curing Tank Heater |
| Rec location | IndoorRheem RTEX-13 240-Volt 1-Chamber 13kW Electric Tankless Water Heater | -Ecosmart Electric 240 V 13 KW Electric Tankless Water Heater | IndoorPerformance 18 KW 3.51 GPM 240-Volt Self-Modulating Electric Tankless Water Heater | -Rheem Performance 27 Kw Self-Modulating 5.27 GPM Tankless Electric Water Heater | IndoorWatts Gas Hot Water Recirculating System | -Curing Tank Heater |
About this item
Product details
- Item Type: Electric Tankless Water Heater
- Brand: RHEEM
- Manufacturer Part Number: RTEX-13
- Features: Endless Hot Water, Replaceable Heating Element, Adjustable Digital Temperature Display
Specifications
Water heater type
Fuel type
Brand
Features
Warranty
Warranty information
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Warnings
Warning Text
Similar items you might like
Based on what customers bought
Rheem RTEX-18 240-Volt 2-Chamber 18kW Electric Tankless Water Heater $420.00
$42000current price $420.00Rheem RTEX-18 240-Volt 2-Chamber 18kW Electric Tankless Water Heater
44.8 out of 5 Stars. 4 reviewsShipping, arrives in 3+ daysBENTISM Electric 240 Volts 8000 Watts Instant Tankless Water Heater for Shower $137.89
Sponsored$13789current price $137.89BENTISM Electric 240 Volts 8000 Watts Instant Tankless Water Heater for Shower
33.7 out of 5 Stars. 3 reviewsShipping, arrives in 3+ daysEcosmart Electric 240 V 13 KW Electric Tankless Water Heater $249.00
$24900current price $249.00Ecosmart Electric 240 V 13 KW Electric Tankless Water Heater
22.5 out of 5 Stars. 2 reviewsShipping, arrives in 3+ daysPerformance 18 KW 3.51 GPM 240-Volt Self-Modulating Electric Tankless Water Heater $425.00
$42500current price $425.00Performance 18 KW 3.51 GPM 240-Volt Self-Modulating Electric Tankless Water Heater
15 out of 5 Stars. 1 reviewsShipping, arrives in 3+ daysRheem Performance 27 Kw Self-Modulating 5.27 GPM Tankless Electric Water Heater $499.00 Was $549.99
Now$49900current price Now $499.00, Was $549.99$549.99You save $50.99You save$50.99Rheem Performance 27 Kw Self-Modulating 5.27 GPM Tankless Electric Water Heater
43.3 out of 5 Stars. 4 reviewsShipping, arrives in 3+ daysTankless Propane Water Heater, 4.3GPM 16L Indoor, Instant Hot Water Heater $195.99
$19599current price $195.99Tankless Propane Water Heater, 4.3GPM 16L Indoor, Instant Hot Water Heater
Shipping, arrives in 3+ daysCuring Tank Heater $250.00
$25000current price $250.00+$15.33 shippingCuring Tank Heater
Shipping, arrives in 3+ daysEccotemp Liquid Propane Water Heater for Indoor, 40 GPM Capacity with Accessories 6 Piece Pack $285.00
2 optionsAvailable in additional 2 options$28500current price $285.00Eccotemp Liquid Propane Water Heater for Indoor, 40 GPM Capacity with Accessories 6 Piece Pack
72.9 out of 5 Stars. 7 reviewsSave withShipping, arrives in 2 daysWatts Gas Hot Water Recirculating System $306.95
$30695current price $306.95Watts Gas Hot Water Recirculating System
32.3 out of 5 Stars. 3 reviewsShipping, arrives in 3+ daysSenville Electric 240V 18KW Tankless Water Heater $264.99
$26499current price $264.99Senville Electric 240V 18KW Tankless Water Heater
Shipping, arrives in 3+ daysGELUOXI RV Tankless Water Heater 42000 BTU Propane Gas Instant Hot Water 15x15 in White Door w/Controller $224.50
$22450current price $224.50GELUOXI RV Tankless Water Heater 42000 BTU Propane Gas Instant Hot Water 15x15 in White Door w/Controller
Shipping, arrives in 3+ daysMizudo EQUIK Classic 14 kW 3.1 GPM 240-Volt Touch Screen Residential Tankless Electric Instant Hot Water Heater $209.99
7 optionsAvailable in additional 7 options$20999current price $209.99More options from $159.99Mizudo EQUIK Classic 14 kW 3.1 GPM 240-Volt Touch Screen Residential Tankless Electric Instant Hot Water Heater
35 out of 5 Stars. 3 reviewsShipping, arrives in 3+ days40L Compact 1.6kW Electric Tankless Water Heater for Bathroom And Shower FJI-POR-40S2 $197.76
$19776current price $197.7640L Compact 1.6kW Electric Tankless Water Heater for Bathroom And Shower FJI-POR-40S2
Shipping, arrives in 3+ daysLYUMO Electric Tankless Hot Water Heater 6500W Electric Water Heater Shower For Household Bathroom $78.57
$7857current price $78.57LYUMO Electric Tankless Hot Water Heater 6500W Electric Water Heater Shower For Household Bathroom
93.6 out of 5 Stars. 9 reviewsShipping, arrives in 3+ daysReduced price Electric Tankless Water Heater, 110V 3000W Mini Electric Tankless Instant Hot Water Heater Bathroom Kitchen Washing $43.99 Was $79.99
Now$4399current price Now $43.99, Was $79.99$79.99You save $36.00You save$36.00Electric Tankless Water Heater, 110V 3000W Mini Electric Tankless Instant Hot Water Heater Bathroom Kitchen Washing
442.7 out of 5 Stars. 44 reviewsSave withShipping, arrives tomorrowTitan 16 W Tankless Electric Tankless Water Heater $331.69
$33169current price $331.69Titan 16 W Tankless Electric Tankless Water Heater
15 out of 5 Stars. 1 reviewsShipping, arrives in 3+ days
Popular items in this category
Best selling items that customers love
EcoSmart Electric Tankless Water Heater 18 kW $404.77
$40477current price $404.77EcoSmart Electric Tankless Water Heater 18 kW
474.3 out of 5 Stars. 47 reviewsSave withShipping, arrives tomorrowEcoSmart ECO-8 40Amps / 240 Volts 8kw Tankless Water Heater $247.69
$24769current price $247.69EcoSmart ECO-8 40Amps / 240 Volts 8kw Tankless Water Heater
35 out of 5 Stars. 3 reviewsShipping, arrives in 3+ daysEcoSmart ECO11 240V 11 kW Electric Tankless Water Heater $206.76
$20676current price $206.76EcoSmart ECO11 240V 11 kW Electric Tankless Water Heater
834.5 out of 5 Stars. 83 reviewsSave withShipping, arrives in 3+ daysEcoSmart ECO27 240V 27 kW Electric Tankless Water Heater $515.00
3 optionsAvailable in additional 3 options$51500current price $515.00Options from $515.00 – $619.00EcoSmart ECO27 240V 27 kW Electric Tankless Water Heater
594.1 out of 5 Stars. 59 reviewsSave withShipping, arrives in 3+ daysStiebel Eltron 240V 5.7kW Mini Tankless Electric Water Heater $192.07
$19207current price $192.07Stiebel Eltron 240V 5.7kW Mini Tankless Electric Water Heater
Shipping, arrives in 3+ daysRELIANCE WATER HEATER CO Electric Lowboy Water Heater, 30-Gal. 6-30-EOLBS 100 $688.16
$68816current price $688.16+$147.99 shippingRELIANCE WATER HEATER CO Electric Lowboy Water Heater, 30-Gal. 6-30-EOLBS 100
34.7 out of 5 Stars. 3 reviewsShipping, arrives in 3+ daysReliance 100108301 1440W/120V 1" ELEMENT $12.89 Was $21.15
Now$1289current price Now $12.89, Was $21.15$21.15You save $8.26You save$8.26Reliance 100108301 1440W/120V 1" ELEMENT
174.8 out of 5 Stars. 17 reviewsShipping, arrives in 3+ days
Customer ratings & reviews
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Showing 1-3 of 7 reviews
Verified Purchase
great space saver, works great
powerful for its size
I installed this unit in my 2/1 1960's condo replacing a 30gal water heater. What a great product! The install was easy i had to upgrade my breaker to a 60 from a 30 which meant upgrading the wiring gauge, which wasn't hard at all. I have hot water on demand now that never runs out! my 30 gal tank would only provide about a 5 min shower now its as long as i want. I have to fill my tub with free flow hot water at only half flow but to keep hot water but i figured as much from such a small unit. overall it was very much worth it to ditch the hot water storage tank and have hot water on demand for as along as in need it. If i were to try to heat a larger house with 2 or 3 baths I would suggest a larger unit but the product is GREAT!!
Hi, Thank you for tanking time to write this review, we appreciate the great feedback and we happy to hear installation was easy and you are enjoying or new water heater. Jennifer
I HAVE INSTALLED TWO OF THEM SO FAR-2 DIFFERENT HOMES. THEY WORK VERY WELL IN FLORIDA-UNLIMITED HOT WATER.









