5.28 GPM Condensing Residential Natural Gas Tankless Water Heater

Get Endless Hot Water with Maximum Efficiency – Upgrade to the ThermoMate CZ480NG Condensing Tankless Water Heater and enjoy unlimited, on-demand hot water for your home. With a 5.28 GPM flow rate and 114,000 BTU output, this advanced system delivers hot water to 3–4 fixtures simultaneously – perfect for busy households. Say goodbye to cold water shocks and waiting for the tank to refill.

Save Energy & Reduce Utility Costs – This condensing tankless water heater achieves a high 0.86 UEF efficiency, offering up to 15% energy savings compared to non-condensing units. Its innovative dual heat exchanger system combines a corrosion-resistant stainless steel condensing exchanger with an oxygen-free copper heat exchanger to capture and reuse heat normally lost by traditional water heaters, maximizing energy efficiency and minimizing operating costs.

Smart & Precise Temperature Control – The ThermoMate CZ480NG uses an advanced flow sensor and microchip technology that adjusts heating power 20,000 times per second, keeping hot water fluctuations within ±1℉. The 3.5-inch LED touchscreen allows easy adjustment of water temperature (90°F–140°F) and real-time monitoring of water flow, flame status, and fan operation.

Safe & Reliable Performance – Engineered with 8 comprehensive safety protections, including boil-dry, freeze, flame-out, overheating, over-temperature, pipe blockage, high-temperature lock, and excessive air pressure safeguards. The water heater’s auto frost protection activates below 41°F (5℃), using minimal electricity to prevent frozen pipes.

Compact & Easy to Install – Measuring 21"H x 13"W x 7"D, this wall-mounted unit saves more than two-thirds of the space of traditional tanks. With standard 3/4" NPT water connectors, 1/2" NPT gas inlet, 3" vent, and UL-approved 120V plug, installation is simple and compatible with most homes.

Condensate Management – As a condensing unit, the CZ480NG produces mildly acidic condensate water. For optimal pipe protection, we recommend installing an external condensate neutralizer kit (sold separately) to neutralize the acid.

Built for Extreme Weather – Equipped with a high-speed DC fan (380Pa static pressure/6000 RPM), this water heater ensures safe and powerful exhaust evacuation, capable of withstanding winds over 111 mph (Category 3+ hurricane conditions), preventing backdraft or flameouts.