Do Rinnai Tankless Water Heaters have a UL Rating?

Rinnai Tankless Water Heaters are not UL-rated but they are certified by CSA International to ANSI Z21.10.3 Standard Gas Water Heaters, Volume III, Storage Water Heaters with Input Ratings Above 75,000 Btu/h. However, the following internal electrical components are UL-certified:

  • Transformer E (UL 1411)
  • Relay (UL 41515)
  • Wire & Conduit (UL 1430)
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