Our NR66 series is perfect for apartments, condominiums and townhouses with 1-2 showers.  When properly sized, they provide an endless supply of hot water and are designed to be more efficient than traditional tank-type water heaters.  These compact heaters will save space without compromising power. Built-in features include safety lock-out, freeze protection, and high elevation adjustment.  PVC CANNOT be used for venting.

These units also offer several innovations: 

• Safety lock out - Default max. 120 degrees (refer to owner's manual for higher temp)
• Standard burner - High performance single flame burner.
• Fully modulating burner - Automatically adjusts burner level accordingly.
• Turbo Flow - Up to 6.6 GPM @ 35 degree temperature rise (5.3 GPM @ 45 degree rise).
• Direct ignition - No standby pilot light.
• Thermal fuse - Automatic overheat protection system.
• Resin coated PC board - Increases durability and protection from elements.
• Automatic air regulator - Monitors internal temperature/maximizes burner efficiency.
• Resin coated PC board - Increases durability and protection from elements.

*Energy Factor (EF) is a measurement of relative energy efficiency for a water heater; the higher the EF, the more energy efficient the water heater.