Rheem Professional Classic Tankless Electric Water Heater

The Rheem Professional Classic Tankless Electric Water Heater is an innovative alternative to traditional water heaters. It provides instant hot water through use of a looped pump through the heat exchanger. Since it only heats the water when you need it, it can save up to $1,100 over the course of 12 years compared to older water heater tanks. It can also save up to 12,000 gallons of water per year.*

It’s compact, about the size of a small carry-on suitcase, and can be installed indoors or outdoors (with use of an additional accessory). It uses PVC venting, making it easier to install than traditional stainless steel water heater venting. You also have the option of adding an EcoNet® WiFi Kit, which will send mobile notifications of maintenance reminders and water leaks for indoor units. For added safety, exclusive Rheem Overheat Film Wrap automatically shuts off the heater in case of overheating. All these innovative features make the Rheem Professional Classic series of tankless water heaters an excellent choice for any homeowner.

The Rheem Professional Classic series of tankless electric water heaters is available in various flow rates, all with an efficiency rating of up to 0.96 UEF:

RTEX-04 (up to 1.5 gallons/minute)
RTEX-06 (up to 2 gallons/minute)
RTEX-08 (up to 4.8 gallons/minute)
RTEX-11 (up to 4.8 gallons/minute)
RTEX-13 (up to 4.8 gallons/minute)
RTEX-18 (up to 7 gallons/minute)
RTEX-24 (up to 7 gallons/minute)
RTEX-27 (up to 7 gallons/minute)
RTEX-36 (up to 8 gallons/minute)

*Source: https://www.rheem.com/innovations/innovation_residential/innovation_tankless/

• Internally loops water through heat exchanger to keep it hot on demand
• Exclusive Rheem Overheat Film Wrap that initiates automatic shut-off when overheating
• EcoNet® WiFi Kits available that can send important status notifications to your phone
• Self-diagnostic capability
• Copper immersion heating elements for increased durability
• Digital temperature display

• Very high efficiency (up to 0.96 UEF efficiency rating)
• Instantly produces hot water only when you need it, saving you money
• Can run the laundry, wash dishes, and more at the same time without running out of hot water
• Fewer cold bursts because water is pumped through heat exchanger in a loop
• Can be installed indoors or outdoors
• Space-saving design (as small as a carry-on suitcase)
• Easy to install with PVC venting