NORITZ Tankless Water Heater, Model GQH-22H8FFAI
22kW Gas Combination Boiler, Built-in Wi-Fi
- Rated heat input 22 kW
- Rated heat output 20 kW
- Minimum heat output 6.6 kW
- Hot water flow (ΔT = 25°C) 16 L/min
By adding built-in Wi-Fi, Noritz turns a stable, cost-effective residential boiler into a smart heating solution that is well-suited to today’s connected homes. This 22kW standard gas combination boiler integrates IoT connectivity into a reliable heating platform. The tankless water heater is a popular choice for households and projects, offering a smart heating performance and convenient remote control.
| Model | GQH-22H8FFAI |
| Rated heat input | 22kW |
| Rated heat output | 20kW |
| Minimum heat output | 6.6kW |
| Minimum DHW output | 7.8kW |
| Thermal Efficiency | ≥89% |
| Hot water flow (△T=25℃) | 11.8L/min |
| Dimensions (H × W × D) | 740 × 440 × 310 mm |
| Weight | 32.5kg |
| Water-flow servo motors | 0 |
| Staged combustion | No |
| Circulation pump | 1 |
| 0.5oC temperature step control | N0 |
| Heating temperature range | 30-80℃ |
| Hot water temperature range | 35-60℃ |
| Noise level (sound power /sound pressure) | ≤53dB / ≤39dB |
| Wi-Fi | Yes |
Combustion Fan
A fixed-speed combustion fan is designed for broad system compatibility, with reliable start-up performance suitable for higher load operating conditions.
Electronic Controller
Provides accurate temperature control and efficient operation, while integrating multiple safety protections, intuitive controls, and fault diagnostics for easier maintenance.
Sealed Combustion Chamber
Insulated and sound-dampened side panels help reduce friction and vibration, protecting internal components and reducing operating noise.
Noritz Water Pump
Engineered for low-noise operation to improve everyday comfort, with built-in self-protection functions that help reduce the risk of faults over time.
Five-Stage Heat Exchanger Design
A compact structure combined with enlarged main tubes and an extended heat exchange path allows heat to be absorbed more effectively.
Italian SIT Proportional Valve
Precisely regulates gas flow and pressure with fast response and high control accuracy, helping optimize combustion efficiency and reduce energy consumption.
Expansion Tank
Balances pressure fluctuations within the water system caused by temperature variation and helps protect components for more stable long-term operation.
- 30-80°C wide heating range, suitable for various residential heating needs
- Compatible with Japanese-style dry-installed underfloor heating for faster heating performance
- Stable hot water temperature, supporting multiple outlets without interference
- Built-in Wi-Fi remote control for easy monitoring and adjustment of system operation
- Active freeze protection for reliable heating during cold weather
The Noritz H Series wall-hung boilers deliver integrated solutions for space heating and domestic hot water. They are suitable for use across different areas of the home, including kitchens, living spaces, bedrooms, and bathrooms. Compatible with Japanese-style dry-installed underfloor heating systems, they provide a faster heating performance for better comfort. In comparison to the common limitations of traditional wall-hung boilers, they support a more stable, whole-home hot water experience.
With more than half a century of experience, Noritz continues to focus on the development of heating systems and hot water technologies. Headquartered in Japan, we are built on a proven HVAC manufacturing foundation to deliver competitive smart wall-hung boilers and flexible customization solutions for global partners to expand within the intelligent HVAC market.