5.28 GPM Condensing Tankless Water Heater Propane NG Indoor Whole House ADU Boil

[Save 15% & Dual Heat Exchanger] – With potential savings of 15% compared to non-condensing units, this condensing tankless water heater delivers outstanding 0.86 UEF efficiency, dramatically reducing energy usage and operational expenses. This performance is made possible by an innovative dual heat exchange system, which combines a corrosion-resistant stainless steel condensing heat exchanger with a highly conductive oxygen-free copper heat exchanger, captures and reuses waste heat that conventional units lose, to maximize heat recovery. [5.28 GPM & 114,000BTU] – The ThermoMate instant hot water heater can supply two showers simultaneously, each delivering 105°F water at a flow rate of 2 GPM, based on an inlet water temperature of 65°F. No waiting time, no cold water shocks.

9.38 GPM Condensing Tankless Water Heater 0.91 UEF Natural Gas for Whole House

[Save 17% & Go Greener] – With 0.91 UEF high-efficiency. This ThermoMate condensing tankless water heater cuts annual hot water costs by about 17% compared to traditional models. Its dual heat exchange system, featuring a stainless steel condensing heat exchanger and an oxygen-free copper heat exchanger, captures and reuses waste heat that traditional models lose, minimizing energy bills and reducing carbon emissions. Enjoy reliable comfort while making an eco-friendly choice. [Whole House Use] – This instant water heater can supply three showers simultaneously, each delivering 105°F hot water at a flow rate of 2 GPM, based on an inlet water temperature of 62°F. In warmer climates with an inlet water temperature above 77°F, it can deliver up to 9.38 GPM of on-demand hot water.

4.2 GPM Propane Tankless Water Heater Whole House 120K BTU 98% Indoor On Demand

Unlimited hot water for larger households and busy families. The CZ422LP Propane Tankless Water Heater delivers 4.2 GPM and 120,000 BTU—enough for 3-4 fixtures simultaneously. No more cold showers when multiple taps run. ±1°F precision eliminates frustrating temperature fluctuations. Oxygen-free copper heat exchanger achieves 98% thermal efficiency, saving up to 30% on energy costs versus traditional tank heaters. Built with 8 safety protections including freeze protection, flame failure, and overheat shutdown. DC high-speed fan withstands hurricane-force winds up to 111 mph—no flameouts during storms. Smart 3.5″ LED touchscreen displays real-time water flow, fan status, and error codes. Ultra-quiet operation (<45 dB). Compact size fits in 1/3 the space of tank models.

RHEEM RTEX-36 Electric Tankless Water Heater,8 gpm 53UJ89

Electric Tankless Water Heater, Operating Voltage 240V AC, Phase Single, Cold Inlet Size 3/4 in, Maximum Flow Rate 8 gpm, Minimum Flow Activation 0.3 gpm, Overall Depth 3.5 in, Overall Height 18.25 in, Overall Width 21.63 in, Power Consumption 36,000 W, Maximum Delivered Temperature 140 Degrees F, Minimum Delivered Temperature 80 Degrees F, Adjustable Thermostat Yes, Current 150 A, Environment Indoor, Market Residential, Control Type Dial, Digital Display with Keypad.

Rheem RTEX-24 24kW 240V Tankless Electric Water Heater 4.68GPM

Missing the manual and red outlet cap. Instant, continuous hot water: provides ample hot water for up to three showers and two faucets (review selection guide below to confirm this water heater will provide the hot water needed based on your geographic location).