RTG66XN - Rheem Tankless Water Heater - Outdoor, Natural Gas

Rheem Tankless Water Heater - Outdoor, Natural Gas

The Rheem outdoor natural gas tankless water heater (model: RTG66XN) is designed to supply 2 to 3 bathroom homes an endless supply of hot water without the complex installation and venting requirements needed with the indoor models. In addition, the RTG66XN tankless water heater is powered by natural gas, which tends to be more efficient and cheaper to operate than their electric counterparts. The unit features a remote control that gives you the ability to fine tune your water temperature to taste without ever leaving the comfort of your home. Complete with intelligent electronic controls, the unit is designed to increase energy efficiency as well as safety.

Temperature Increase / Gallons Per Minute:

• Flow Rate at 35°F Rise: 8.4 gpm
• Flow Rate at 45°F Rise: 6.6 gpm
• Flow Rate at 50°F Rise: 5.9 gpm
• Flow Rate at 60°F Rise: 4.9 gpm
• Flow Rate at 70°F Rise: 4.2 gpm
• Flow Rate at 77°F Rise: 4.0 gpm
• Flow Rate at 80°F Rise: 3.6 gpm
• Flow Rate at 90°F Rise: 3.3 gpm
• Flow Rate at 100°F Rise: 2.9 gpm

Warning: This water heater is not suitable for use in manufactured (mobile) homes!

Primary Specifications:

• Model: RTG-66XN (RTG66XN)
• Rheem Tankless Water Heater - Outdoor, Natural Gas
• 6.6 gpm at a 45°F temperature rise (up to 8.4 gpm at 35ºF)
• High altitude capability—up to 9840 ft. elevation above sea level (no chip required)
• Electronic ignition increases efficiency (no standing pilot light)
• Digital display on thermostat shows temperature setting and maintenance/error codes
• Guardian SBT™ sensing burner technology
• Guardian OFW™ overheat film wrap
• A remote control thermostat is included with 100°F - 140°F setpoint range (factory set at 120°F)
• Environmentally friendly Low NOx burner
• Freeze protection to -30°F
• EZ-Link™ cable available for high demand applications to connect two like units to operate as one, thereby doubling capacity
• Warranty: 5-year limited warranty on parts (12 years on heat exchanger.)
• Weight: 54 pounds
• Dimensions: 25 5/8" h x 13 7/8" w x 9 7/8" d

Energy Requirements

• Ignition: Electric (120 V)
• Power Natural Gas: Up to 180,000 BTU
• Energy Factor: .82

• Click here to view the EnergyGuide for this model (pdf)
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Temporarily Backordered

This item ships UPS or FedEx ground. Delivery times related to these ship methods are usually between 2 and 5 business days once the product leaves the warehouse. We will email you tracking information once the product leaves our warehouse. UPS or FedEx ground deliveries do not require a signature and may be left at the ship to location. All deliveries will occur Monday through Friday.

UPS or FedEx ground deliveries do not include a guaranteed delivery date. Should you require a specific delivery date or expedited shipping please add the item to the shopping cart and view the shipping options drop down box. If the product is eligible for expedited shipping the shipping options and pricing will be listed. Please contact our customer service department with any questions related to shipping. (800) 297-6076, M-F, 8am to 5pm CST.