Lochinvar Noble NKB199N High-Efficiency Combi Boiler
The Lochinvar Noble NKB199N is a high-efficiency wall-mounted condensing combi boiler designed to provide both hydronic space heating and domestic hot water from a single compact appliance. With a powerful 199,000 BTU input rating and up to 95% AFUE efficiency, the Noble delivers exceptional comfort while helping reduce energy costs.
Perfect for radiant floor heating systems, baseboard heating, hydro-air systems, and domestic hot water applications, the NKB199N combines Lochinvar's proven fire-tube heat exchanger technology with advanced controls and flexible venting options.
Its stainless steel fire-tube heat exchanger provides long-term durability, excellent heat transfer, and low pressure drop for improved system performance. The compact wall-mounted design saves valuable mechanical room space while delivering reliable heating and hot water throughout the home.
Key Features
- ✓ 199,000 BTU input capacity for demanding residential applications
- ✓ 95% AFUE efficiency helps reduce fuel consumption
- ✓ Provides both space heating and domestic hot water from one appliance
- ✓ Up to 4.8 GPM domestic hot water production
- ✓ Durable stainless steel fire-tube heat exchanger
- ✓ 10:1 turndown ratio for improved efficiency and comfort
- ✓ Universal vent adapter supports multiple vent materials
- ✓ SMART CONTROL™ operating system for simple setup and diagnostics
Ideal Heat Source for Radiant Floor Heating
The Lochinvar Noble NKB199N is an excellent choice for hydronic radiant floor heating systems. Its high-efficiency condensing design, advanced modulation capabilities, and stainless steel fire-tube heat exchanger help deliver consistent water temperatures for maximum comfort. Whether you're heating a single zone or an entire home, the Noble boiler provides dependable performance while producing domestic hot water from the same appliance.
