Ranein Natural Gas Tankless Water Heater, 8.5 GPM, 190,000 BTU, Indoor

Reviews updated 1 day ago

The summaries below are AI-rewritten and translated from public Amazon reviews. We do not publish original review text — each summary links to its source.

Customer review summaries

✓ Verified
AI-assisted

Tankless Heater Delivers Consistent Hot Water

After about a month and a half of use, this tankless water heater performs well. Unlike the previous electric unit, which limited showers to roughly ten minutes before turning cold, this heater allows unlimited shower time. Running hot water in the kitchen and washing laundry simultaneously with a shower produced no noticeable temperature change. Installation was done personally, with the propane connection handled by the propane company. The switch from electric to propane was considered worthwhile.

Pros
  • + unlimited hot water for showers
  • + consistent temperature with multiple simultaneous uses
  • + worthwhile switch from electric to propane
AI-assisted summary of a verified Amazon customer review. · July 29, 2026 · United States Read original on Amazon ↗
✓ Verified
AI-assisted

Works well, with a hiccup after a year

This tankless water heater works well. After a year of use, an error code appeared. The company sent a free replacement within a week, and the issue was resolved. Overall, it performs as expected and would be purchased again.

Pros
  • + works well
  • + free replacement sent within a week
  • + would buy again
Cons
  • − error code after a year of use
AI-assisted summary of a verified Amazon customer review. · September 7, 2026 · United States Read original on Amazon ↗
✓ Verified
AI-assisted

Good quality at a good price

This tankless water heater works well and the exhaust installation is simple, with extensions available. It responds to even small flows and adjusts heat as flow increases, keeping temperatures steady. The connections are 1/2-inch, so 3/4 adapters may be needed for a standard flushable install kit; the threading is not NPT tapered, so an adapter with a stop and washer is recommended. There is no remote, and after every power down it defaults to 129°F, so it needs a convenient location to reset the temperature. Maximum is 149°F. Choose the correct gas type, as units are not changeable or returnable. Used for a single-bathroom apartment, it handles multiple simultaneous water draws with more than enough capacity.

Pros
  • + works well
  • + simple exhaust installation
  • + extensions available
  • + responsive to small flows
  • + stable temperatures
  • + handles multiple simultaneous draws
Cons
  • − 1/2-inch connections require 3/4 adapters
  • − threading is not NPT tapered
  • − no remote
  • − defaults to 129°F after power down
  • − gas type not changeable or returnable
AI-assisted summary of a verified Amazon customer review. · July 1, 2026 · United States Read original on Amazon ↗
✓ Verified
AI-assisted

Works Well Until It Breaks, Then No Support

The heater performed well until it broke, after which no replacement part could be purchased due to a lack of customer service. A phone number that had worked previously stopped working, and calls over three days failed to reach an agent. The main drawback is the poor customer service and inability to obtain parts.

Pros
  • + Worked well initially
Cons
  • − No customer service for replacement parts
  • − Phone number stopped working
  • − Unable to reach an agent over three days
AI-assisted summary of a verified Amazon customer review. · August 18, 2026 · United States Read original on Amazon ↗

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