
Rheem RTEX-13 Professional Classic Series
Best price now
Compared across 5 stores. Prices are checked against each store and labelled with when.
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Price facts
- Lowest price today: $250.00 at Miami Water Heater (checked Nov 12, 2026).
- Checked at 5 stores.
Rheem RTEX-13 Professional Classic Series prices at every store
- Miami Water HeaterNew
In stock
$250.00Free shippingChecked 51 min ago - Wholesale Water HeatersNew
In stock
$262.00Free shippingChecked 51 min ago - The Home DepotNew
In stock
$299.00Free shippingChecked 51 min ago - Grainger Industrial SupplyNew
In stock
$489.13+ $15.69 shippingChecked 51 min ago - AmazonNew
Availability unknown
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$287.90Free shippingChecked 51 min ago
Also available at
- MIAMI WATER HEATERSCheck price at MIAMI WATER HEATERS
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Rheem RTEX-13 Professional Classic Series price history
Lowest price we've seen: $250.00 on Nov 13 at Miami Water Heater. Tracked across 5 stores since Nov 13.
About the Rheem RTEX-13 Professional Classic Series
This is a brand new unit and has a full manufacturer's warranty and a 2-year Miami Water Heater labor Warranty.
Rheem RTEX-13 Professional Classic Series 13 KW, 240 Volt, 54 Amps, 4.8 Gallon Per Minute Indoor Electric On Demand Tankless Hot Water Heater Professional Classic® Energy efficient tankless electric indoor inline water heaters offer continuous/endless hot water quickly and on demand for single point-of-use such as sinks, showers or bathroom or multiple applications. These compact tankless residential electric water hot heaters are also great RVs, campers, mobile homes and travel trailers. Rheem's compact low profile design allow these small, yet highly powerful, eco friendly and money saving 4.8 gallon per minute point of use tankless water heaters to fit easily under kitchen and bathroom sinks and counters.
Performance Features:
• On demand, consistent and endless hot water
• 99.8% Energy efficient
• Robust copper immersion heating elements with brass top increases durability and are threaded for easy replacement
• Simple Installation
• Digital temperature display
• External controls to adjust temperature in increments of 1°F*
• External Digital Display – shows outlet temperature
• Durable Copper Immersion single heating element, field serviceable
• Simple Installation – 1/2" NPT water connections
• Compact and stylish with digital temperature control in increments of 1°F ranging from 80°F to 140°F
• 99.8% Energy efficient • Robust copper immersion heating elements with brass top increases durability and are threaded for easy replacement
• Simple Installation
• Digital temperature display
Specifications ( Full Spec Sheet Click Here )
• Weight:8.5LBS
• Voltage:240V
• 54 Amps • Required Breaker: 60 Amp
• Wire Size: 6 AWG
• Power: 13 kW
• Energy Source:Electric
• Water Connection:1/2 Inch
Questions and answers
- Where is the Rheem RTEX-13 Professional Classic Series cheapest?
- At Miami Water Heater, for $250.00, as of our latest check.
- Where can I buy the Rheem RTEX-13 Professional Classic Series?
- 5 stores we checked sell it, including Miami Water Heater, The Home Depot, Amazon, Wholesale Water Heaters, Grainger Industrial Supply.









