Napoleon NSM045S2A 45,000 BTU Single Stage Natural Gas Furnace

  • Napoleon NSM045S2A 9500 Series 45,000 BTU Single Stage Gas Furnace
  • Offering Self-Diagnostic Integrated Furnace Controls & Very Small 32" Cabinet Height
Availability: Discontinued
List Price: $2177.00
Price Break: $502.00
Our Price: $1675.00


Enjoy reliable, safe and efficient heat in your home with the Napoleon NSM045S5A home gas heater with 45,000 BTUs. Unlike other models this furnace has a lot of power in a very small design. Measuring at 32 7/8" tall it is the shortest high efficiency unit available. The Napoleon NSM045S5A natural gas furnace would make a great addition to any home.

High Efficiency
This unit features a very high 95% AFUE. The higher the rating, the lower the fuel costs. If you have a unit that is 25 years old or older it could only have a rating of 55% AFUE. So this unit will save you money in the long run by maximizing the heat transfer and ensuring that no heat is wasted.

High Quality Components
The Napoleon natural gas furnace features an integrated furnace control board that manages all operational functions including constantly monitoring all safety devices. It contains LED service indicator lights to ensure quick and accurate service calls. It also accommodates hook-ups for a humidifier, HRV, and electronic air cleaner.

Designed to Be Quiet & Durable
This furnace comes with a sound reducing insulated cabinet so it won't disturb you while it operates. Also, it features a powder coated finish that resists scratches, dents and eliminates sharp edges for your safety. The thermally insulated heat exchanger compartment reduces clearance to combustibles.

Easy Installation & Maintenance
The Napoleon NSM045S5A furnace gives you several installation options. Install it for upflow, downflow, horizontal left, and horizontal right without the need for a special installation kit. Also, it requires zero clearance so it's easy to install in an alcove or a closet.


  • Model: NSM045S2A
  • Product Type: 45,000 BTU Single Stage Natural Gas Furnace
  • Product Color: White/Red
  • Application: Single stage natural gas furnace ideal for providing reliable, safe and efficient heat for your home.
  • Type: Furnace Heater, Single Stage Furnace
  • Warranty: Manufacturer's limited lifetime warranty
  • Fuel Type: Propane, Natural Gas
  • Efficiency (AFUE): 95 %
  • Motor Type: Multi-speed PSC
  • Motor Size: 1/2 HP
  • Input: 45000 BTU/HR
  • Output: 42750 BTU/HR
  • Minimum Vent Size: 1 1/2 Inches
  • Maximum Vent Size: 2 Inches
  • Minimum Vent Length: 15 Inches
  • Maximum Vent Length: 75 Inches
  • Blower Size: 10-6RDD
  • Maximum Air Flow: 1000 CFM
  • Minimum Air Flow: 800 CFM
  • Tonnages: 1-1/2, 2, 2-1/2
  • Return Opening Size: 14x23


  • Allows for versatile installation: upflow, horizontal right, horizontal left and downflow
  • Converting the unit to propane is very easy
  • Covered by a limited lifetime warranty and limited replacement guarantee
  • Durable sound reducing insulated cabinet will eliminate any noise disturbance
  • Features a convenient self diagnostic integrated furnace control (IFC)
  • Protected by a corrosion resistant heavy gauge aluminized-steel tubular triple-pass heat exchanger that is very efficient
Our Guarantee
  • FREE return shipping
  • Hassle-Free return policy
  • Zero restocking fees