Review summaries: APUS Propane Tankless Water Heater, 140,000 BTU, Up to 6.8 GPM, Indoor

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Solid tankless heater, easy DIY install, recirculation tricky

This propane tankless water heater feels solid and fires up with hot water almost immediately after installation. Setup is straightforward for a capable DIYer, and customer service replies by email within 24 hours, though there is no chat or phone support. Recirculation setup has been difficult, meaning a wait for cold water in the lines to heat. The unit also went on sale for $112 less shortly after purchase. Overall, it is recommended, and the savings may offset professional installation if needed.

Pros
  • + solid build
  • + fast hot water
  • + easy DIY installation
  • + customer service responds within 24 hours by email
Cons
  • − no chat or phone customer service
  • − recirculation setup difficult
  • − price dropped $112 shortly after purchase
AI-assisted summary of a verified Amazon customer review. · December 1, 2025 · United States Read original on Amazon ↗
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Reliable Hot Water for Off-Grid Living

This propane tankless water heater delivers hot water for off-grid households, allowing longer showers than a camper setup, filling a bathtub easily, and handling back-to-back showers without running out. It also works for dishes and laundry. Unlike other instant water heaters tried before, this one performs without issues. It is a small unit intended for basic household tasks, not for endless use, and it meets those expectations dependably.

Pros
  • + Provides more shower time
  • + Fills a bathtub easily
  • + Handles consecutive showers
  • + Works for dishes and laundry
  • + No issues compared to other instant heaters
Cons
  • − Not designed for endless use
AI-assisted summary of a verified Amazon customer review. · June 2, 2026 · United States Read original on Amazon ↗
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Tankless Water Heater Delivers Endless Hot Water

This tankless water heater replaces a failed tank unit and provides strong, consistent hot water. Running two showers and the kitchen sink at the same time causes no drop in flow, and the water stays hot. It eliminates the need to keep 50 gallons heated around the clock, which helps lower energy bills. The compact wall-mounted design frees up significant space compared to a tank. App control allows adjusting the temperature from a phone before showering. Overall, it performs better than traditional tank models.

Pros
  • + strong water flow with multiple fixtures
  • + consistent hot water
  • + lower energy bills
  • + compact wall-mounted design saves space
  • + app temperature control
AI-assisted summary of a verified Amazon customer review. · August 3, 2026 · United States Read original on Amazon ↗
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Endless Hot Water After Easy Installation

Installed in February to replace an electric 50-gallon water heater that caught fire. Uses standard natural gas lines and plugs into a 120V outlet. Produces an endless supply of hot water immediately. Initially had trouble getting it to ignite, but the cause was an occluded water line downstream that restricted flow and prevented the sensor from tripping. After replacing the faucet and shower hardware, it has worked without issue. Highly recommended.

Pros
  • + endless hot water
  • + immediate hot water
  • + standard natural gas lines
  • + plugs into 120V outlet
Cons
  • − initial ignition problem due to occluded water line
AI-assisted summary of a verified Amazon customer review. · July 2, 2026 · United States Read original on Amazon ↗