Navien or Takagi Flash T-H1 Tankless Gas Water Heater?
I'm looking for a high efficiency gas tankless hot water heater. I've come across Navien which makes 98% efficient and the Takagi Flash T-H1 which is 92% efficient but I'm totally new to tankless water heaters and am curious if anyone has experience with either of these and can share some opinions.
I'm wondering how reliable tankless water heaters of these types I mention are.
Any reviews, feedback or tips would be greatly appreciated.