Newer Trane 80% Furnace Model Number Description
The model number description information in this blog is for the new Trane 80% S-series S8B1 furnace manufactured beginning in March 2019.
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Applicable Furnace Model Numbers
Similarly, the newer Trane 80% furnace model number descriptions in this blog are applicable to the following Trane 80% furnaces.
NOTE: This information has not been certified by the manufacturer. ENSURE that you verify all of this model number information with the manufacturer before using this information to make equipment selection or repair decisions.
Decoding the Trane 80% Furnace Model Number Description
The above Trane furnace model numbers can be decoded to reveal specific technical information about the furnaces. Specifically, this is based on the model number. The guide below shows the breakdown of the model number descriptions. First production of these units began in November 2018. These S series furnaces are all 34″ tall.
Model Number: S 8 B 1 D 120 M 5 P S A A
Position: 1, 2, 3, 4, 5, 6 – 8, 9, 10, 11, 12, 13, 14, 15
- S equals S-series, L = Ultra Low NOx (these Ls are California models)
- AFUE: 8 = 80%, 9 = 90% or higher
- Blower Type: B = Builder Series (May be PSC or CTM), P = PSC, X = Constant Torque Motor (CTM), V = Variable Speed
- Gas Valve Stages: 1 = single, 2 = Two Stage, M = Modulating
- Cabinet Width: A = 14.5”, B = 17.5”, C – 21”, D = 24.5”
- BTU Input in thousands
- The BTU Input in thousands
- BTU Input in thousands
- Poise Options: U = 3 way, D = Dedicated Downflow, M = Multipoise / 4 way
- Air Capacity for Cooling in Nominal Tonnage = 2, 3, 4, 5 ton blower drive
- Inducer Type: P = PSC / Shaded Pole, X = CTM, V = Variable Speed
- Communicating Capability: S = 24Volt T = Communicating System Control, T = 24 Volt Low NOx (for California models), D = Communicating System Control with low NOx
- Major Design Change: A – Z
- Minor Design Change A – Z
- Revision Service Change A – Z
Also, a product brochure for the older Trane 80% furnaces can be found at the link: Trane 80% Furnace Manual XC80, XV80, XL80, XT80, XR80, XB80.
And, a product brochure for the newer Trane S-series 80% furnaces can be found Trane S-Series Furnace Brochure.
Furnace dimensions for these new Trane S-series 80% furnaces is shown below beyond Trane 80% Furnace Model Number Description
Model Height (inches) Width (inches) Depth (inches) Nominal Output (BTU/hr)
S8B1A026M2PSAA 34 14.5 28.75 20,800
S8B1A040M3PSAA 34 14.5 28.75 32,000
S8B1B040M2PSAA 34 17.5 28.75 32,000
S8B1B060M3PSAA 34 17.5 28.75 48,000
S8B1B060M4PSAA 34 17.5 28.75 48,000
S8B1B080M4PSAA 34 17.5 28.75 64,000
S8B1C080M5PSAA 34 21 28.75 64,000
S8B1C100M5PSAA 34 21 28.75 80,000
S8B1D120M5PSAA 34 24.5 28.75 96,000
All of the above listed Trane S-series 80% furnaces have an AFUE (Annual Fuel Utilization Efficiency) ratio of 80%. While the above furnace dimension data and AFUE rating data are not found on the newer Trane 80% furnace model number description information, so this information must be obtained separately.
Furnace Serial Number Can Reveal Furnace Year of Manufacture
Alternately, there is a handy webpage that shows how to decode HVAC appliance serial numbers to determine the year of manufacture. Go to http://www.building-center.org and select the appliance type, and the letter that the appliance brand begins with. Then locate the brand in question from the drop down menu. And a list will be available with a variety of serial number formats that the particular brand uses. The location of the year embedded in the serial number is identified.
If your current furnace is 15 years old or older and is rated as an 80% furnace, then upgrading to a new Trane S-series 80% furnace will provide noticeable energy savings over your older furnace. This is partly due to the different way that furnace efficiency is rated today versus the way furnace efficiency was rated 15 years ago. In the past, the older furnace efficiency rating was based on bringing the furnace up to normal operating temperature and then measuring the furnace efficiency. Instead, the current method of rating the energy efficiency of the furnace is to begin calculating furnace efficiency when the furnace is started. Basically, this is because the furnace does not run as efficient upon initial startup, before the furnace components are at an optimum temperature for optimum combustion efficiency.
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Information on the description of Trane furnace model numbers can be found here.
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