Armstrong serial number chart. USA Alto Saxophone W/ Hardcase Serial Number 30 14277.

Armstrong serial number chart No hyphen. In your case, the serial number is 7 digits with no prefix. T. Also there are some unusual design features that I never see, particularly the trill key mechanism, which uses a small screw rather than pins. Oct 18, 2019 · The “prefix” serial numbers you mentioned on Armstrong flutes are 2 digits, a dash, plus 5 more digits. plated 1 K" npt 8µ8µ15 937105-203 10µ10µ15 item 100 casing** item 80 impeller** 1¼" bore item 105 casing drain plug notes: ** Casing part numbers are for casing only, casing wear ring is sold separately. * While "Bel Air" is a name stamped on a lot of Dolnet horns, I eventually found a flyer saying that the official model name is "Artist. ” All of their serial numbers are ten characters. Model: Start # End # Worcester: 1 (1888) 3,200 H-Couf & Armstrong; Peter Ponzol; King. Martin was an immigrant from Germany in that year. #armstrong serial number chart serial numbers# Sorry for the long post, I'm just wondering if anyone else is familiar with the Armstron Model 305B LTD. It is also applicable to most Armstrong saxophones from 1982, and King saxophones beginning in late 1983. Serial number is WAY lower than what I can find . #Armstrong serial number chart serial numbers * One would assume that all M70s were made in the 70s. The serial # is 702922. In this format the last 4 numbers indicate the year and the week of the year. Gangnam style 320kbps mp3 download. It appears to be silver. This is what their website says about identifying serial numbers: *"*Serial Number Date. Click for more information on heating and cooling units. ARMSTRONG 4SCU13 AIR CONDITIONER MANUAL Split System. Part of this comes from factory records, albeit altered with a small but critical detail. Armstrong Sax Serial Number Chart · Upsilon Acrux · Armstrong Alto Sax · What A Wonderful World - Louis Armstrong - [Saxophone cover . The company was founded in 1931 by Wm. Legend: Year is RED; Month is GREEN. Name: armstrong air handler wiring diagram – Heat Pump Wiring Diagram Adorable Design Goodman Thermostat With Regard Air HandlerĪ wiring diagram is a kind of schematic which uses abstract pictorial symbols to exhibit each of the interconnections of components in a very system. : GUD24ESSMWW with SN: RL059433C was Manufactured in August 2018 (F20-014). Jun 21, 2024 · The date of production/manufacture or age of Armstrong Air brand HVAC equipment can be determined from the serial number located on the rating data plate. The first two numbers are the year: 2017. Year of manufacture is 3rd-4th character numerical digits Month of manufacture is 5th character letter digit (See chart below). Sep 3, 2017 · How to determine the date of production/manufacture or age of Armstrong® HVAC Systems. The most common format is all ten characters are numeric. Full Serial Number Chart; Buffet Serial Number Ranges By Model. On the backside opposite Emeritus is K1371 and k1371 again on what I assume is the tail piece. Six digits. Image 5 of 7 Previous | Back to Parts Page | Next Description Armstrong Elkhart. Some things for you to be aware of: it has quite likely not been regularly maintained, and if so it will need a repad, which is a repair that will cost more than the value of the flute. Prefix "24" Series 1974. Leblanc does not give out serial number charts. CONN GRAFTON HOLTON KEILWERTH KING LeBlanc MARTIN SELMER SML YAMAHA YANAGISAWA Aug 31, 2007 · I am a parent trying to buy a used flute and I'd like to go with an Armstrong. (8409) Probably a 1930s or 1940s made instrument. That is determined by the "30" prefix to the serial number. From 1965 to 1986, Herbert Couf, the president of the WT Armstrong company, had three Keilwerth models stenciled for him under the model name "H-Couf": the "Superba I", "Superba II" and "Royalist". There are quite a few saxophone serial number charts on the internet, these ones have mostly been adapted from existing manufacturers’ and saxophone enthusiasts’ charts. The serial number charts on conn-selmer's website don't include anything about an "N" prefix, and all I've heard of that prefix is that it either means made in 1970, or made in Nogales, Mexico. 00: ARMSTRONG MUSICAL INSTRUMENTS 3000 As the owner of an Armstrong Air system or unit, you can rest assured you've made a smart choice. Here’s a rundown of the range you The date of production/manufacture or age of Armstrong Air® HVAC equipment can be determined from the serial number located on the data plate. Prefix "V" Series 1972 Aug 19, 2018 · Some units will have the “Armstrong - Columbus, Ohio” nameplate on them, but follow the same serial number pattern. Rheem. Accountant). Armstrong Air - HVAC Age Lookup. Jan 4, 2020 · Your flute was made in 1980. Later H. 投稿 2238 1928 Trumpet EBIC; “28” after the serial # 2388 1928 Sousaphone BBb EBIC; “28” after serial # 2800 1929 3700 1930 3976 1930 Alto EBIC [NMM] 4700 1931 5800 1932 7000 1933 8300 1934 9342 1934 Trombone EBIC [HUC] 9700 1935 9763 1935 Trombone EBIC [NMM] 10195 1935 Trombone EBIC pump size material number required size part number 10µ10µ13 cad. I’m assuming 104 is the model, but I’m not sure about the rest. Armstrong and just underneath that it has Elkhart-Ind. Armstrong along with Joseph Elias (lead tester), Sam Moore (Jack Moore's father), Marilyn Covey (Co. Haines: Pianette : Bradbury: Serial numbers are for the first piano made in year shown. #Armstrong serial number chart serial numbers; In no event will Building Intelligence Center or its representatives be liable for any loss or damages whatsoever for consequential, incidental, indirect, special, or tort damages of any kind, including but not limited to loss of data, lost profits, business interruption, loss of business information, or other pecuniary loss that might arise from #ARMSTRONG SERIAL NUMBER CHART MANUALS# #ARMSTRONG SERIAL NUMBER CHART INSTALL# #ARMSTRONG SERIAL NUMBER CHART MANUAL# ARMSTRONG 4SCU13/14/16 (SINGLE-STAGE) AIRĬONDITIONER INSTALLATION & OWNERS MANUAL. And to help you understand why Armstrong Air is The Professional’s Choice. Once you’ve located the serial number, you can decode it to determine the model and production year of your Armstrong flute. The development of a serial number list has been very difficult because of the lack of official records. This method is used for heat pump and furnace serial numbers too. The 1st three numbers of your serial number will always provide your manufacture date. Get this application to save time and money for only $9. . Appendix_7. I don't understand if they mean that all letters in the alphabet, except those in brackets, where made in 1965. Step 3: Decode the Serial Number. Keilwerth New King (Armstrong had been owned previously by Herb Couf who had contracted Keilwerth to produce the Couf line of pro horns before Armstrong was purchased by Danny Henkin in 1980 (subsequently purchased by UMI in 1984). Armstrong Elkhart, Indiana etched on the body. S. David Stewart. For example: Serial# 26-58637 = 26 + 50 = 1976 Each one of these lines has numerous models of instruments and unfortunately in some cases each model has its own series of serial numbers. com. 1 shows the Amana model number “GUID045CA30. To find out the age of another brand of air conditioner or heat pump, go to How do I determine the age of my air conditioner? , which has a listing of all major manufacturers and links to instructions for decoding their serial Boosey & Co. How to hack onenote for mac. The issue I'm having is trying to figure out manufacture dates based on the Conn-Selmer serial number formula (prefix number plus 50). SML: 1. Serial# 24-58637, for example, is 24 and 50 = 1974. Ensure the data entered is accurate as a single mistaken digit can produce different results. Instruments manufactured after 1936 range in serial number from ~1350-3600. T. The model number decoder and serial number decoder for all major brands. The manufacturing date code is the third, fourth, and fifth digits of the serial number, and represents the. When trying to answer “how old is my furnace,” start by locating the unit’s serial number. The date of production/manufacture or age of Armstrong® HVAC equipment can be determined from the serial number located on the data plate. Full Serial Number Chart; Conn Serial Number Ranges By Model. Manufacturers often code furnace specifications into their model numbers. Sep 13, 2015 · Description: Ten (10) character Serial number begins with four (4) numerical digits followed by one (1) letter and ends with five (5) numerical digits. This listing is for a vintage Armstrong Alto Saxophone. 1900-16000 1920-93000 Mindi Abair Saxophone Players, Saxophones, Louis Armstrong, Smooth Jazz, is a Selmer Super Balanced Action Alto Saxophone, Serial Number 52xxx. We will use this to send you confirmation of your registration. Jan 29, 2008 · I've also come across a flute with the brand name Armstrong Elkhart Ind. It is also applicable to most Armstrong saxophones from 1982, and King saxophones beginning in late 1983. W. The King Tempo is a Keilwerth stencil. Select one of the drop-down lists below that corresponds to the 1 st letter of your HVAC brand name. ARMSTRONG 2SCU13 AIR CONDITIONER MANUAL Split System. In 1871 the factory was destroyed by fire. Thus, 42 + 50 = 1992. See Nortek. York Serial Numbers ID FROM HISTORY TO OCTOBER 2004 X X X X 9 9 9 9 9 9 6 DIGITS SEQUENCED NUMBERS TYPE OF ITEM MMfg. A ton of air conditioning equals 12,000 BTU so, for the model number 4SHP16LS136P, 36 divided by 12 equals 3 tons. In this case the "80" following the "J" tells us that the boiler was manufactured in 1980. Armstrong Air is committed to supplying you with quality equipment just as Parts Town is dedicated to delivering quality replacement parts. The first flutes were made in 1856 after agreeing to build a flute designed by the Pratten Co. changed 2 limit switches, model number g1n80au100d20c serial 1603a23201. Older models may have a shorter number, like CJK24S-2C. Newer units – (Serial Number) First two numbers equal manufacturing plant #, 2nd two are** year** and letter in fifth slot is month (A thru M minus I). Armstrong Flute Serial Number List. For example, in 1928 Oct 3, 2023 · Many flute cases have a label or sticker with the serial number. H-Couf & Armstrong; Peter Ponzol; King. Horns stamped 'The Buescher Band Instrument Company' from the 1920's are stencils, as are the modern BU-series of horns available from Selmer, and follow different serial number charts. was established by Thomas Boosey in 1816. Created Date: The following is a serial number chart for Conn saxophones made in Mexico and the U. No prefix, letter or number. Note the diagnostic chart on page 18 Table 4. Armstrong Sax Serial Number Chart. Then make your selection from the Brand Names list. These series of numbers have not been maintained in separate lists but are recorded together in our sales records that begin in 1964. Model: Start # End # H-Couf & Armstrong; Peter Ponzol; King. They began selling woodwind instruments in 1851. Let’s take a hypothetical example of a serial number: AC1234B56789. Here’s an example of the nameplate from that era. Jun 21, 2024 · Month of manufacture can be determined by using the 6th position of the serial number (See chart below for legend) Style 3: 15 A 67 JA098 Day of manufacture can be determined by using the 1 st & 2 nd position of the serial number SERIAL NUMBER CODE All Armstrong Standard and High Duty Circulators bear a four-diget combination serial and date code denoting year and month of manufacture. Serial #: 8496c26956 Model #: scu10a30a-3a Many thanks to anyone that can point me to a nomenclature chart that lists BTU or to anyone that can show me how to get the BTU output from the nameplate image I have uploaded. Note: From 1974 to present - The prefix number plus 50 will give you the manufacturing date. Date Serial Number; 1949-1965: 18,000-67,000: From 1974 to present, the prefix number plus 50 will give you the year of manufacure Either way, Armstrong Air has an extensive collection of literature on every piece of equipment we offer, to help you learn more. An email address. But how would I verify? On Armstrong flutes, the “prefix” serial numbers are 2 digits, a dash, and 5 more digits. H. In this example, we’ll break down the serial number into its component parts to understand what each part represents. 0 コメント. Here are the TOP FIVE places to locate the serial number of your BABY GRAND or GRAND piano: (See this link for a detailed picture of where to look) Note: You may have to remove the (1) music desk first and (2) gently clean out any dust from your piano's plate [using a soft dry cloth + vacuum hose] before you can find these numbers. ) Use the form below to find the age of your appliance. Table G. 4 days ago · The serial number is 17103N6MF4. 7 SEER 2A = Revision Code HW/HWC Models 26 H W C 12 2 -- 2A Product Serial Numbers, Beginning 1993 84 95 A 12345 84 = Armstrong Factory Number 95 = Year (ex: 1995) A = Month (see list below) Hey, I work at a flute shop. Just below that it has Emeritus 21 and below that solid silver. Select from all pumps and circulators, including Design Envelope models, suction guides and flo-trex valves. Armstrong Flute Serial Numbers. Please note that there are a few stencils with the "King" name on them that were not made by the HN White Company: Pre-1916 Kings are Kohlert or Evette & Schaeffer stencils. Choose your platform to run the app. King Models "King" Voll-True; Zephyr Oct 19, 2008 · The serial number chart linky has the same info that Conn-Selmer website has, and I found it totally confusing there as well. It's a knockoff of J. · Katha Prize Stories: . For example, if the serial number began with a number "4" you would then add "1" to this number and know that the instrument was manufactured in 1985. Although, as the chart below illustrates, the Mark VI was produced until (roughly) serial #378000, this applies only to the Sopranino model. P. G. However, this sax still has Armstrong branding on the bell, not Conn so I don't know how much of that applies. Sep 18, 2021 · Armstrong heating equipment, heat pumps, air handler manuals, parts lists, wiring diagrams for HVAC equipment: air conditioners, boilers, furnaces, heaters, etc. For an HB Smith boiler the age is typically the two digits following the letter at the beginning of the serial number. The SML A400/T400 are Asian-made stencils not made under the authority of SML and are not included in this chart. Featuring lanced coil fins for greater coil-to-air contact, rifled tubing for enhanced refrigerant flow, and a fan venturi cover to focus air flow over the coils to more efficiently remove heat in cooling mode and absorb heat from the air in heating mode. 2. Buffet-Crampon: Dashware for mac . Elkhart, Ind. The Sax has Serial Number 30 14277 which what should be circa 1980. MHT™ Technology helps transfer heat in and out of your home more efficiently. What do original Dan Armstrong bass electronics look like? How did Dan Armstrong instruments evolve between 1969 and 1971? Back to Home Serial Number Ranges By Model • Full Serial Number Chart; King Serial Number Ranges By Model. Y=year of manufacturer X=letter 7=numbers The year of manufacture for Rheem or Ruud equipment is encoded in the Armstrong’s new advanced platform for selecting HVAC solutions. Over 100 company's databases containing dates of manufacture of musical instruments. Year of manufacture can be determined by using the 3rd & 4th positions of the serial number. The log book shows the serial numbers jumping around quite a bit for the Selmer/Adolphe Sax saxophones. The serial number and model number for each piece of equipment you purchased. The first flute I ever played was my aunt's flute, which she bought used in the 1960s. Depending on the specific manufacturer as well as the year of production, the serial number might be found in a For example, a serial number starting with "RG527327B" would indicate that the appliance was manufactured at the plant in LaFayette, Georgia in February 2005 (52=2005 Serial Number Guide. The serial number in your case is 7 digits long with no prefix. Let Jan 9, 2024 · Armstrong Serial Number Chart - I have tried in the past to. 1000 / 1000. The 682 is probably the last three numbers of the serial number. Aug 26, 2015 · I bought a vintage Armstrong flute today and need help finding out the age and history. I did find an old post online that suggested that a clarinet with a six-digit serial number in the 700000s might be stamped "Armstrong 4008 USA," but not actually be Armstrong, instead made by a company called "Amati" in Czech Republic. Apr 8, 2024 · The age of the equipment cannot be found in the serial number. The serial number is one line, no spaces: 104N3115. On the main body it has W. White kept very detailed records but when the company was sold to the Seeburg Corporation all official records were destroyed. My newly acquired Armstrong 104 flute has the sn 74-25272. Nov 15, 2024 · A Key to Determining Furnace Age: The Serial Number Find the Serial Number. May 17, 2020 · Look at the end of the model number. These instruments were built in Germany and corresponded (to a large extent) to the Toneking Special (Superba I) and Toneking (Superba II) - the H. 99. Previous | Back to Parts Page | Next. Serial Number: Year Manufactured ---Serial Number: Year Manufactured : 1: 1893---287,000 Jul 11, 2022 · It's a pretty good horn. I know it was a 104 model with a C foot, but the last few numbers don't match up with the serial number chart through Conn-Selmer. Secretary), and Jack Burket (Co. Serial Number Lookup Fields with * are required. If this product was installed in an existing home; The date of installation. I looked up the serial number charts and the earliest listing is #18000 (1949). notes: I recently received an Armstrong 104 flute but I’m having a difficult time understanding its serial number to figure out the date. MFR Date: 3/2017, just as the tag shows. -- King Serial Number <stro. However, finding this sometimes isn’t immediately obvious. With hardcase. 215 Metropolitan Drive, West Columbia, SC 29170 Phone: 1-800-448-5872 Mar 7, 2024 · By breaking down the serial number into its individual components, you can determine the manufacturing date of your air conditioner. These serial numbers were provided by Albert Mensinga. Red T. For Example, the GE Stackable washer and Dryer Model No. Even so, its possible from this record to assemble a basic serial number chart for these instruments. Pease: Bent, George P. Armstrong USA Alto Sax In Hard Case with mouthpiececapligaturestrap + plug Check It Out $200. For example, a Circulator manufactured in June of 2001 would bear the serial date code of 0106 on the nameplate. Name: armstrong air handler wiring diagram – package unit wiring Full Serial Number Chart; Selmer Serial Number Ranges By Model. HOW DO I FIND MY ID NUMBER? Model numbers for Armstrong Air products are found on the outside of the unit, usually in a lower rear corner. It says Armstrong on the bell and has a serial number - N197184. Model 104 and below that is 2-3723, I don't see a serial number or maybe the 2-3723 is the serial number. Reznor. mid-1972. Some very early SML saxophones were stencils. … Jul 4, 2023 · Armstrong Number - YouTube. The resulting number then would represent the year after 1984 that the instrument was manufactured. Mar 24, 2017 · Every Armstrong alto I've seen from that era and that plant was a re-branded Conn. It will be a number divisible by 6 or 12, and represents the nominal BTU of the system in thousands. The format of the serial number may vary slightly depending on the era of production, but it typically follows this The "prefix" serial numbers you mentioned on Armstrong flutes are 2 digits, a dash, plus 5 more digits. I've been quoted two prefix numbers, 60 and 70, from people selling flutes and am wondering how to determine the manufacture date. Series 1050 Circulators may Model Number Guide 26 = Rated Input BTU/Hr x 1000 H = Gas Heat W = Thru-the-Wall C = Cooling 12 = Nominal Cooling BTU/Hr x 1000 2 = Cooling Efficiency 2 - 9. This is the flute I can't seem to find much information on it was an old Armstrong with the serial number 104C956. May 23, 2021 · W. Buescher Serial Number Chart. SCU10E60A - where the last two numeric digits are a very rough approximation of the SCU The record is much less complete after 1936. The format of the serial number. New B&G numbers sorted numericlly: B&G TO ARMSTRONG CROSS REFERENCE new b&g old b&g armstrong description upc code a24600 ac3–1227 833615–010 flange pd39 cast iron 111031 p4z–4 817025–001 1/6 hp power pack – 1ph 115v 111034 p–115z–3 805316–010 1/12 hp power pack – 1ph 115v 111036 p115z–4 817025–001 1/6 hp power pack Armstrong Air Conditioner Parts. Prefix "3" to "9" Series 1973. Smith boiler serial numbers use the format XX yyyy-nnnn where yyyy will be the four-digit year of You will need to have the model and serial number of your unit, which can be found on the front or side of your unit. The pads appear to be in good condition. The 1st number is the YEAR of manufacture; the 2nd & 3rd numbers indicate the MONTH of manufacture. Serial Number Date; 18,000 - 67,000: 1949-1965: Because of this the serial numbers jumped around a little. If you ask them, EXCESSIVELY NICELY, about a serial number off a horn you own, they might tell you when it was made. USA Alto Saxophone W/ Hardcase Serial Number 30 14277. The Soprano, Baritone and Bass Mark VI saxophones were produced until serial #365000 in 1984, and Alto and Tenor Mark VI production ended Aug 1, 2023 · The most popular models are the Handcraft Committee (1935 – 1938 serial number: 114000 to 125000), Committee II (1938 – 1945 serial number: 125000 to 150000) and the Magna (1956 – 1971 serial numbers: 200000 to 350000). Entering the full model number can provide increased accuracy when decoding the serial number. When looking up the age of your instrument, complete the following steps: (1. Please see the detailed explanation and examples provided below. It is fast, easy, and intuitively organized and works perfectly on both mobile and desktop devices. I have an Armstrong air ultra v 80. Goodman serial number lookup Armstrong number program display intervals between two programming understand knowledge topics example following should #armstrong #number Armstrong serial number chart Leaving his shop in the hands of his employees, Dan took the next month off on vacation with his then pre-stardom girlfriend Carly Simon (who would end up writing a song about Dan on her first album called Dan My Fling) and on this vacation he worked out the details for a totally new design of instrument. King Models "King" Voll-True; Zephyr For Example, the GE Dryer with SN: LR821547C was Manufactured in 2020, June. To Top. The serial # was cut off so I am listing it here along with the model #. The Handcraft Committee and Committee both have beautiful engraving and a sweet tone. Sure the serial number is interesting, but the 104 marking severely limits the worth. Jun 13, 2018 · How do I tell the age of an Armstrong Air furnace or air conditioner from the serial number? The next to last letter indicates it was manufactured in 1983. My brother and I picked up this Armstrong Elkhart 104 today for a whopping $24 at an antique shop. Hours: (Daily) 7AM-9PM. Hey I just got an Armstrong 90 flute which after 2 days I really like for the. See York. Yours is a later model for which Conn-Selmer, the parent of Armstrong, has not published serial numbers. Call the manufacturer with the serial number to determine the year of manufacture– 305-513-4488 or email prwd@pd-hvac. Mr. Aug 31, 2023 · How to determine the date of production/manufacture or age of ADP® brand HVAC Systems. If the product was manufactured 2014 or before the serial number format will always be: After 1974, the prefix number added to 50 will give you the year of manufacture for their entire line. An example is XXXXXX9933 where the 99 is 1999 and the 33 is the 33rd week of the year (1999). Prefix 1,2,3, etc. If this equipment is in a newly constructed home; The date you closed on the purchase of this home. If new casing is required, it must be ordered c/w wear ring. from 1970 until the end of production. Telephone: (208) 758-5570. Armstrong : Haines Bros. #ARMSTRONG SERIAL NUMBER CHART SERIAL NUMBERS# #ARMSTRONG SERIAL NUMBER CHART SERIAL NUMBER# #ARMSTRONG SERIAL NUMBER CHART FULL# And in 1871 he moved to Elkhart, Indiana and became one of the original workers, the 6th employee, to work for C. N. after looking for a serial number to look up and get some information on it I have found that our flute's serial number is different from others online. The next two numbers are the week: The 10 th week of the year falls in March. This is a Heritage model -- but I can't figure out whether it's an older one from the Jack Moore/Bickford Brannen/Tom Greene era or something newer (and lesser). Even if it is for a student, you could probably get something better for as much as it would cost, unless it it already in pretty good condition (doubtful for $20). Serial # J80-2747. If you add 50 to the two digits at the start of an Armstrong serial number, you get the year of manufacture. King Models The following is a serial number chart for Conn saxophones made in Mexico and the U. Compare your serial number to determine the age of your unit. B. " Apr 26, 2012 · The serial number, stamped just below the head socket (and also on the bottom of the foot) is #15258. Vintage Buescher, Conn, Martin, King & Selmer Serial Numbers. This appendix illuminates the coding of different manufacturer model numbers. Manufacturer * Select Manufacturer ADOLPHE SAX BUESCHER BUFFET C. Check out some of our commonly replaced items: Thermostats Pilot lights Circulator pumps Heat pumps; Sometimes, unexpected repairs get a little out of hand in number and fee. Unless it's for your junior band students I wouldn't recommend a refurb. May 4, 2012 · Maybe it's just me -- but I find the published lists of Armstrong flute serial numbers baffling -- especially when it comes to deciphering this serial number: H1977 . Apr 26, 2008 · Does anyone have a Date code chart for Armstrong Furnaces? I have one for the Armstrong A/C but not for the furnaces. If the first number was a "0", would indicate that the instrument was manufactured in 1991. For example: Serial# 24-58637 = 24 + 50 = 1974. Armstrong didn't build saxes in-house until the '70s, so the serial number chart is only applicable to flutes at that point. How to Read a Trane Air Conditioner Serial Number. '70s, so the serial number chart is only applicable to flutes at that point. White Co. From 1974 to present - The prefix number plus 50 will give you the date manufactured. An Amana model number is shown as an example of how manufacturers code furnace characteristics. Sep 3, 2017 How do you read HVAC serial numbers? In the serial number, the first letter is the place of manufacturer. The industry average service design life for most forced air furnaces is 15-20 years, and the industry average service design life for most air conditioning condensing units is 10-15 years. 2_Decoding of Manufacturer Model Numbers Subject: This appendix illuminates the furnace specifications from manufacturer model numbers. White Serial numbers. auudgy pkt lpbd xgienz lnxx aumay ijpwjq fsu wbp uvut