520HN NG – Natural Gas

Input Max BMH: 117

Vent Material:  B-Vent

Gas Type: Natural Gas

GPM @ 55 Degree Rise: 3.4

Description

  • 520HN – Up to 80% thermal efficiency
  • 520HN – Requires no electricity
  • 520HN – Uses B-Vent
  • 520HN – 15-Year residential heat exchanger with online registration
  • 520HN – 2-Year parts warranty with online registration