For a steady stream of warmth throughout your home on cold winter nights, a great choice is a 40K BTU 96% AFUE Variable Speed 2 Stage Trane RunTru Gas Furnace - Upflow/Horizontal - 17.5inch Cabinet. Under the Trane brand, RunTru gas furnaces deliver quality, durability, and reliability with their competitively priced and straightforward furnaces that are all designed, tested, and assembled in the USA.

The American Gas Association has certified this Trane RunTru gas furnace for use with both natural and liquefied petroleum (LP) gas. This unit delivers with a 40,000 BTU capacity, 3 ton nominal air flow, and 96% annual fuel utilization efficiency (AFUE) that meets utility rebates and can lower your utility bills.

This gas furnace's multiport inshot burners operate both efficiently and quietly. The default setup for these burners is natural gas, but this model can be converted for use with LP gas with a separately purchased conversion kit.

The primary heat exchanger in this 40K BTU 96% AFUE Variable Speed 2 Stage Trane RunTru Gas Furnace - Upflow/Horizontal - 17.5inch Cabinet is made of corrosion resistant, cycle-tested, heavy gauge tubular stainless steel, and the secondary heat exchanger is made of specialty 29-4C™stainless steel that is able to reclaim heat from flue gases that would be lost in a typical system.

The high-efficiency blower motor inside this gas furnace is designed to improve the comfort of your home and improve the system's use of energy. The motor features variable speeds and provides sufficient airflow for most heating and cooling requirements.

With a Trane RunTru gas furnace you won't have to make as many maintenance calls as with other furnace options and the unit's replacement parts are widely available when needed.

This Trane RunTru 2-Stage Gas Furnace features an integrated system control that continuously monitors for the presence of flame in your system when it is heating, This solid state device has an exclusively designed operational program that gives total control of the furnace's limit sensors, blowers, and gas valve.

The integrated control system also provides self diagnostic information on its display and is protected from condensate by a rain shield that sits on top of it.

Instead of a pilot light that always burns, this system uses a silicon nitride hot surface ignition system that lights the main burners on demand. This eliminates waste and the chore of checking and relighting the pilot each season.

Among this unit's other safety features is a dual solenoid combination gas valve and regulator that provide additional peace of mind.

The Trane RunTru gas furnace is wrapped inside a heavy gauge steel cabinet for additional strength and is certified to leak 1.4% or less of nominal air conditioning.

Including the cabinet, the dimensions of this gas furnace are 34 high by 17.5 wide by 28.75 deep. These are standard HVAC measurements so it is compatible with larger, high-efficiency coils and other common accessories.

At this size, you can easily move the gas furnace to fit in tight spaces such as short basements or tight closets. This particular model can be installed in three configurations: upflow, horizontal left, or horizontal right. Each of these installation setups includes two venting options with no knockouts in the casing.

This 40K BTU 96% AFUE Variable Speed 2 Stage Trane RunTru Gas Furnace - Upflow/Horizontal - 17.5inch Cabinet is Fan Energy Rating (FER) compliant and its limit setting and rating data were all established and approved under conditions set by the American National Standards Institute (ANSI).