Rinnai M120SN M Series Natural Gas Boiler 120000 BTU
$1,485.03
The Rinnai M120SN is a residential condensing natural gas boiler with a capacity of 120000 BTU. This wall-mounted unit is crafted for easy installation and serves as a retro-fit option for older, less efficient boilers.
Product Description
The Rinnai M120SN is a residential condensing natural gas boiler with a capacity of 120000 BTU. This wall-mounted unit is crafted for easy installation and serves as a retro-fit option for older, less efficient boilers. It is designed to provide complete heating for your home. The primary heat exchanger is made of stainless steel, ensuring durability and efficiency.
- Compact wall-mounted design maximizes space
- Ideal for retrofitting existing systems
- Provides whole house heating solutions
Product Highlights
This boiler is ENERGY STAR certified and suitable for natural gas use, making it a reliable choice for efficient heating.
Product Information
Standard Information
- Manufacturer Trade Model Number – U.S.: M120SN
- Gas Type: Natural Gas
Technical Specifications
- Product Depth: 10.46 inches
- Product Height: 31.8 inches
- Product Width: 17.3 inches
- Central Heating Capacity: 120000 BTU
- Mounting Type: Wall
- Vent Type: Direct Vent
- Application: Boiler
- Input Capacity: 23500 to 120000 Btu/hr
- Power Source: Plug-In


Delivery Times
Once your order ships, here's roughly what to expect:
Delivery times can vary based on your location and carrier conditions. Remote areas or weather delays may add a day or two.
Related products
Rinnai CHS19980HCXIN Demand Duo Hybrid Water Heating System 199,000 BTU, 80 Gallon
Rinnai CHS19980RIN Demand Duo Hybrid Water Heating System 199,000 BTU, 80 Gallon
Rinnai CHS19980RIN is a Demand Duo hybrid commercial water heater that pairs a 119-gallon storage tank with a 199,000 BTU tankless module for natural gas operation, delivering high first-hour output for peak demand. The unit vents to a 6 in. B-Vent and includes a Duo Smart digital controller with recirculation control and Wi-Fi capability.
Rinnai IP090199C i-Series Plus 90,000 BTU Condensing Combi Boiler, 95% AFUE
The RINNAI ip090199c is a condensing gas combination boiler from the I-Series Plus line, designed for residential heating applications that require simultaneous space heating and domestic hot water delivery. Rated at 95% AFUE, this combi boiler delivers high efficiency performance across a wide output range from 90,000 to 199,000 BTU/h.
Rinnai RUR160IN Sensei 160,000 BTU Condensing Indoor Tankless Water Heater with Pump Valve
Rinnai RX160I Condensing Tankless Water Heater 160000 Btu/h
The RINNAI RX160I is a condensing tankless water heater designed for high-demand residential and light commercial hot water applications. Operating at 160,000 BTU/h input and achieving a Uniform Energy Factor (UEF) of 0.95, this unit delivers strong thermal efficiency with on-demand hot water output.
Rinnai RX199I Condensing Tankless Water Heater 199K Btu
Rinnai RXP199I Condensing Tankless Water Heater 199000 Btu/h
Rinnai V53DEN Value Series Residential Natural Gas Tankless Water Heater – Outdoor
