Noritz GQ-C3261WX-FF Us Ng Tankless Water Heater 199900 Btu

Product Description

The NORITZ GQ-C3261WX-FF US NG is a high-input condensing tankless water heater designed for residential indoor installation on natural gas. Rated at 199,900 BTU/h, it delivers a flow rate of 11.1 gallons per minute, making it suitable for high-demand whole-home hot water applications. The unit uses a direct vent configuration, drawing combustion air from outside and exhausting flue gases through a sealed venting system. A uniform energy factor of 0.98 reflects its condensing efficiency, which is among the highest available in the residential tankless category. Licensed plumbers and HVAC technicians typically handle installation.

This unit is intended for indoor residential installation where natural gas is the fuel source. The direct vent design makes it well-suited for tight spaces or interior mechanical rooms where combustion air cannot be drawn from the surrounding area. At 11.1 GPM, the GQ-C3261WX-FF US NG can support multiple simultaneous hot water draws in a single-family home or small multi-family setting. Its condensing operation requires a condensate drain connection during installation, which should be planned into the rough-in layout.

Key Features

• 199,900 BTU/h input rating for high-demand residential hot water delivery
• 11.1 GPM flow rate supports multiple simultaneous fixtures
• Condensing technology achieves 0.98 uniform energy factor
• Direct vent system uses sealed combustion air intake and exhaust
• Natural gas fuel type for compatibility with standard residential gas supply
• Indoor-rated design for installation in conditioned or semi-conditioned spaces

Compatibility

Designed as an OEM-style residential tankless water heater for natural gas indoor direct vent applications in the EZ Series Pro product line.

Installation Notes

Installation must be performed by a licensed plumber or qualified gas technician in accordance with local plumbing codes, the manufacturer instructions, and IFGC requirements. Shut off the gas supply and cold water inlet before beginning any work on the unit. The condensing design requires a proper condensate drain routed to an approved disposal point. Direct vent termination clearances must be verified per the manufacturer specification and local code before finalizing the flue run.

Technical Specifications

• Fuel Type: Natural Gas
• Heating Input: 199,900 BTU/h
• Flow Rate: 11.1 GPM
• Uniform Energy Factor: 0.98
• Venting Type: Direct Vent
• Installation Location: Indoor
• Condensing: Yes
• Application: Residential

Standard Information

• Brand: NORITZ
• Manufacturer Part Number: GQ-C3261WX-FF US NG