Hvac serial number cheat sheet - Previously, it was a complex series of letters and single digits.

 
To determine the age of an HVAC system or water heater, begin your research by locating the brand name and serial number on the HVAC system or water heater. . Hvac serial number cheat sheet

It serves as a quick reference guide for homeowners, HVAC technicians, and enthusiasts who want to have a comprehensive understanding of HVAC systems, maintenance practices. 47, which states vented heating appliances should have CO levels that do not exceed 0. The average service design life of boilers. There are four variations of the Coleman and Coleman-Evcon serial numbers. BASIC UNITS - DATA PLATE SERIAL NUM BER INFO RM ATIO N XXXX999999 T Y P E O F IT E M M Mfg. The model number breaks down as follows the first 4 letters is the model (DGAA) the numbers in the middle indicate the BTUs in thousands (056) the last 3 or 4 letters. The format and location of the date code can vary among manufacturers, but it typically contains information about the production date or year of the unit. email distributorteamstylecrest. The latest CompTIA A exam codes are 220-1101 for Core 1 and 220-1102 for Core 2, and you must pass both to obtain the CompTIA A certification. There may be a date stamp to the right of the serial number. Its goal is to provide thermal comfort and acceptable indoor air quality. The prompt examples shown here are just that examples. Carrier AC, furnace and heat pump units manufactured in the last 20 years have 10 characters numbers mostly and one or two letters. Our HVAC products for distributors make it easier for you to exceed client expectations while delivering convenience, energy efficiency, and high quality. 75 to 355 kW 1 to 550 hp. How can I confirm the model and serial numbers for my heating system The furnace nameplate is located on a side panel behind the front panel of the furnace. The year of manufacture is the 3rd and 4th numerical digits. How to determine the date of productionmanufacture or age of AirEase&174; brand HVAC Systems. Thats because Goodman lives up to its name in a big way, with time-tested energy-efficient technology, highly-durable materials and spot-on manufacturing. Some hvac brand also has new code for its new hvac units. Number and (P) is the Power Characteristics. Easy to select, install, commission and use. 8, meaning this system meets the strict energy efficiency standards set by the federal government and can cool your home reliably. It doesnt include Westinghouse, and every once in a while I come across another manufacturer thats not included. Each manufacturer has their own system for coding this date, and at times, it can seem like unraveling the Da Vinci Code to try to figure it out. The duration of warranty coverage in Texas and Florida differs in some cases. The 3 rd and 4 th numbers represent the month. On top of that, this single-stage air. 3 KB) I might eventually pay a graphic artist on fiverr. On some older systems near the bottom right above the lines on newer systems closer to the top. , bank fees, cash, taxes, etc. Roofing coolr sheffield efficient varietyMetal roofing color chart How to pick the right metal roof color consumer guide 2017Roofing metal chart color roof residential warranty year. (ignore the first alphabetic character, pick up the first four numeric digits, and decode them as YYWW as we illustrate here. 90 AFUE Furnaces. Appreciate any help or any links to a carrier site that i can use in the future to identify units. The first two numbers of the serial number are the year of manufacture for a Daikin air conditioner or heat pump, so the serial number shown below indicates the unit was manufactured in 2015. The average service design life of boilers. Home Owner Assistance Home Owners Phone 800. The first ten characters may be the same. This cover is called the service panel. The date of productionmanufacture or age of Heat Controller HVAC equipment can be determined from the serial number located on the data plate. Remove the front door and look inside the unit. BONUS TIP. Basic Unit P Purchased Basic Unit S M fg. The product serial number, a unique character string including numbers that can be decoded to give the product&39;s age and manufacturing details. Over 90 of homeowners tell us they can't understand their HVAC quotes. 14th & 15th digits Factory Code (01OH; 02GA) Carrier, Bryant, Payne, Day & Night Recently (last 20 years or so) the first four numbers in the serial number represent the week and year. Heil HVAC Age Decoder. It doesnt include Westinghouse, and every once in a while I come across another manufacturer thats not included. Fresh Access Ventilation Products. GBB-030708229 -or-GBB-0307-08229. Contact the HVAC Product Support Team. There may be a date stamp to the right of the serial number. Number and (P) is the Power Characteristics. For older equipment Google can be pretty helpful. Product Brochure. There are four variations of the Coleman and Coleman-Evcon serial numbers. Explore the M-Series and P-Series catalog from Mitsubishi Electric, featuring a wide range of mini. You must assume the decade. Application Bulletins, Certifications, Service and Technical Bulletins. The AHRI Directory is the trusted source for performance certified HVACR equipment. 65 - Governor. This look-up will not give manufacturing information for any other Weil-McLain product but boilers. This cross-reference tool will assist you to convert obsolete or discontinued Johnson Controls Building Automation and Controls products to a substitute or alternate replacement when available. Any leads on finding a list of serial numberage codes that is pretty complete Unit &39;s 91 and 92 built in the 2nd Quarter of 1972. Ensure the fan or pump is powered, running and, most importantly, rotating in the correct direction. HTML Cheat Sheet; CSS Cheat Sheet; Bootstrap Cheat Sheet; JS Cheat Sheet; jQuery Cheat Sheet; Angular Cheat Sheet; Practice. For amazing HVAC service, we encourage you to contact us at Precision Heating & Air. ANSI is 1978. Call 905 672-0860 if you get stuck. Communications with the BCD is achieved by calling one of a number of subroutines. PRODUCT DATA SHEET. How to Read York Serial Numbers Full Explanation. Starting in 2010 Year. 255, with a default subnet mask of 255. For a furnace, the plate is usually found inside the furnace&x27;s cover, which you&x27;ll have to remove. For instance, if the first 2 numbers are 02, the year is 2002, 05 is 2005, 10 is 2010, 18 is 2018, etc. 60 - Voltage or Current Balance Relay. Common HVAC Electrical Terms. Application Bulletins, Certifications, Service and Technical Bulletins. Learn more about Goodman Manufacturing Air Conditioners today. Our independent team of HVAC industry insiders can score your quote. Find hundreds of in-stock HVAC parts and helpful resources at HD Supply. Ide like one very much. 49 - Machine or Transformer Thermal Relay. Over 90 of homeowners tell us they can't understand their HVAC quotes. Enter the 7-digit CPSerial Number of the boiler to obtain the manufacturing date and any associated information on the product. Parent Company Heat Controller Sister or similar Brands Include Century Comfort-Aire Conquest Corsair Grimsby Heat Controller Patriot 80. Explore the M-Series and P-Series catalog from Mitsubishi Electric, featuring a wide range of mini. Product Brochure. ASEs Study Guides help you gauge your test readiness and focus your preparation. Product Literature. Number 500 series indicates international standard compressor BM and model number. W stands for split heat pump and T stands for split cooling. Central Air Conditioner 14 PA4S. Visit the. S-Series (Spanish) Limited Warranty Statement. Lead to picking up additional work by being present of mind with your customers. Units are designed, engineered and assembled in the U. The date of productionmanufacture or age of Oxbox HVAC equipment can be determined from the serial number located on the data plate. The age is generally encoded into the serial number. The XR14 Air Conditioner, also known as Trane's best value air conditioner, is a great investment for homeowners. The serial number is 17103N6MF4. (For example, an 8 could mean the equipment was manufactured in 2008 or 2018. 66 Notching or jogging device. Yyear of manufacturer Xletter 7numbers The year of manufacture for Rheem or Ruud equipment is encoded in the. 8, meaning this system meets the strict energy efficiency standards set by the federal government and can cool your home reliably. 7th thru 13th digits Unit Identity . Take this free HVAC practice test to see how prepared you are for an HVAC certification exam. Enter the 7-digit CPSerial Number of the boiler to obtain the manufacturing date and any associated information on the product. It doesnt include Westinghouse, and every once in a while I come across another manufacturer thats not included. Month of manufacture can be determined by using the 6 th & 7 th positions of the serial number. GEDigitalEnergycom 1 ANSI Standard Device Numbers & Common Acronyms Suffixes Description 1 Positive-Sequence 2 Negative-Sequence A Alarm, Auxiliary Power AC Alternating Current AN Anode B Bus, Battery, or Blower BF Breaker Failure BK Brake BL Block (Valve) BP Bypass BT Bus Tie BU Backup C Capacitor, Condenser, Compensator,. The 2 nd & 3 rd positions (digits) of the serial number represent week. Our lineup of central air conditioners allows you to choose the best solution to meet your needs. The account name is the given title of the business account youre reporting on (i. It doesnt include Westinghouse, and every once in a while I come across another manufacturer thats not included. Oxbox&174; HVAC Age. Carrier furnace nomenclature maintenance model numbers bryant repair payne nomenclature tonnage hvac ahu equipment find climatemaster carrier hvac serial number age chart. The first two numbers after the letter represent the week of the year, 1 through 52. The age is generally encoded into the serial number. Standard Model DH199A-AAEI 5754 Special Feature Model. We salute you. Trying to decipher the Serial Number with no luck. Try assigning the tool different roles, instructions and details. Technicians are required to pass an EPA-approved test to earn Section 608 Technician Certification. 63 - Pressure Switch. (For example, an 8 could mean the equipment was manufactured in 2008 or 2018. Forward Curved (FC) Fans Less efficient than airfoil or backward inclined fans Low cost to manufacture Lightweight construction 24-64 shallow blades with blade heel and tip curved in direction of rotation Smallest wheel diameter for given duty of all centrifugal fans types Most efficient at low speeds. Philosophy Metaphilosophy Metaphysics Epistemology Ethics Politics Aesthetics Thought Mental Cognition. found in HVAC systems. S-Series (Spanish) Limited Warranty Statement. 51 is. Serving Dallas, Hiram, Acworth, Kennesaw & Marietta, GA. Play this informative HVAC journeyman practice test to test your conceptual knowledge. Home ; Offerings ; Drives ; Low voltage AC ; Industry specific ; ACH550;. Discover the perfect option for your new home furnace - from natural gas furnaces to smart furnaces that auto-adapt to your home's needs. It doesnt include Westinghouse, and every once in a while I come across another manufacturer thats not included. ACH580 drives for HVAC Comfort control and effortless operation of your HVAC system. The Cisco Nexus &174; 9300-FX Series switches belongs to the fixed Cisco Nexus 9000 platform based on Cisco Cloud Scale technology. Chat GPT is great for creating templates, examples and approximations. 0" esp. all rights reserved. 255, with a default subnet mask of 255. How to Read a Rheem Serial Number. odt (29. American Standard Product Serial Number & equipment age. Designed for agility and versatility, CCNA proves you have the skills needed to manage. Lead to picking up additional work by being present of mind with your customers. The Goodman literature library has consumer brochures and technical specifications for various Goodman HVAC models and product lines. com to finalize your registration) to. For amazing HVAC service, we encourage you to contact us at Precision Heating & Air. GCS16-090-350-2Y GCS16 is the Series, 090 is the Cooling Capacity, 350 is the Heating Capacity, 2Y (2) is the Dash Number and (Y) is the Power Characteristics. The MORTEX family of products provides an array of versatile and efficient cooling and heating solutions to your every need. Formatted by one (1) letter (M-Z. It can increase the longevity of the equipment. AC DATA TAGS - Air conditioner & heat pump data tags de-coded. Starting out with a serial number decoder for a few selected makes, you can look up equipment&x27;s assembly month based on its serial number. MFD (microfarad) 1 Farad1,000,000. Millions of residential and commercial property owners across North America, as well as around the globe, rely on heating and cooling systems from International Comfort Products (ICP). Starting out with a serial number decoder for a few selected makes, you can look up equipments assembly month based on its serial number. Part of the Rheem. For solid fuels such as coal and wood, ash forms from in-combustible materials in the fuel. Take this free HVAC practice test to see how prepared you are for an HVAC certification exam. When interpreting air-moving equipment model numbers a variety of numbers and letter methods are used to represent fan capacities. We must ensure we have the correct air flow or fluid flow before the next step of troubleshooting can take place. Do you have your Nortek Global HVAC model and serial number interpreter If not, ask your distributor for one In this tip, Dana Clark discusses how to. This method is used for heat pump and furnace serial numbers too. email distributorteamstylecrest. Behind appliances and high on the wall. A 1994 B 1995 C 1996 D 1997 E 1998. The serial number is made up of a letter followed by a nine-digit number. BACnet data transfer involves reading data from or writing data to. Run system at least 10 minutes to allow pressure to stabilize. Do you have your Nortek Global HVAC model and serial number interpreter If not, ask your distributor for one In this tip, Dana Clark discusses how to. About this HVAC Tip. 5214AX31929 decodes as week 53 of 2014. Some units will have the date of manufacture clearly marked in a box on the data plate marked Mfg. MFR Date 32017, just as the tag shows. - Choose delivery frequency. Call 905 672-0860 if you get stuck. a non-DIY site and the ultimate Source for HVAC Information & Knowledge Sharing for the industry professional. Central Air Conditioner 14 PA4S. It doesnt include Westinghouse, and every once in a while I come across another manufacturer thats not included. Who we are Ever wish you can decode model or serial of hundreds of rooftop units in a batch with ease We built RTU Decoder with a mission to make life easier for professionals in the HVAC industry. Converts to number. Units are designed, engineered and assembled in the U. You should be able to see the model number on a rating-plate or decal right on the front of a ventilator or an evaporator coil and on the side if you have a fan coil. The intelligent drive choice for HVAC applications from 0. Product Brochure. Date, and the serial number will not be encoded. Visit the HVAC Navigator website. Dual Fuel. Data sheet) RBIP-01BACnet PICS (Protocol Implementation Conformance Statement) (English - pdf - Data sheet) Maintenance Schedule for ACS550 and ACH550 (English - pdf - Service. The more you experiment, the better 2. 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. email distributorteamstylecrest. Mechanical Systems Cheat Sheet by jswans33. Fans, Blower Housings and Assemblies. 47, which states vented heating appliances should have CO levels that do not exceed 0. You can adjust your home climate from almost anywhere using a computer or mobile device. Up to 16 SEER2 done. The thermometer should be located within 4 to 6 of the compressor. To get the best results, start with the Test Specifications Section for. Single-Stage Operation done. Up to 13. The age of an HVAC system is often encoded in the manufacturer&x27;s date code or serial number. Previously, it was a complex series of letters and single digits. Oct 27, 2023 The age of the equipment cannot be found in the serial number. AirEase&174; HVAC age. Step 2 Identifying the Make, Model, Age, and Size. 5 FPS. To find the age of another manufacturerbrand, go to How do I determine the age of my air conditioner. This look-up will not give manufacturing information for any other Weil-McLain product but boilers. Have your product serial number handy, then select Water Heating, Heating & Cooling, or Pool & Spa (well redirect you to Raypak. The Cisco Nexus &174; 9300-FX Series switches belongs to the fixed Cisco Nexus 9000 platform based on Cisco Cloud Scale technology. For example, some manufacturers use numbers to represent nominal fan cfm capacity; 08. 04, or 400 ppm Air Free. GCS16-090-350-2Y GCS16 is the Series, 090 is the Cooling Capacity, 350 is the Heating Capacity, 2Y (2) is the Dash Number and (Y) is the Power Characteristics. 7th thru 13th digits Unit Identity . Any leads on finding a list of serial numberage codes that is pretty complete Unit &x27;s 91 and 92 built in the 2nd Quarter of 1972. Merit Series Small Split Air Conditioners and Hear Pumps. Remove the front door and look inside the unit. Product Registration Public - Johnson Controls. For commercial HVAC systems, we offer an array of WindFree solutions you can check out here. Model 58GS050-2 Serial P1C03651. The date of manufacture is encoded in the serial number or is given in the upper right corner of the equipment data tag. The next two numbers are the week The 10 th week of the year falls in March. It may look something like this DGAAO56BDTA. Hvac Cheat Sheets Mechanical Systems Cheat Sheet by jswans33 HVAC MAX GPM MAX SFU 906. This number represents the type of refrigerant the unit uses. Some units will have the date of manufacture clearly marked in a box on the data plate marked Mfg. You should be able to see the model number on a rating-plate or decal right on the front of a ventilator or an evaporator coil and on the side if you have a fan coil. Visit the appropriate index page from the menu or buttons above where alphabetized lists of manufacture brand names have been provided. Do this on the outdoor unit, whether it&x27;s a split system or package system. comknowledge-centeridentify-system-make-model-size-age-typethere-many-different-system-types-well-focus-systems-make-90-commonly-installed-today-idenAge hIDSERP,5828. Nov 21, 2007 The cheat sheet Im using for HVAC is one I obtained on this message board a while back. The same form of numbering that is recorded in the 362 note should also be recorded in. If you have questions or request assistance, please contact us at psotechsupportjci. Technical data. Learn about our Energy Efficient Innovations. S-Series (Spanish) Limited Warranty Statement. It doesn&x27;t include Westinghouse, and every once in a while I come across another manufacturer that&x27;s not included. single-zone indoor ninek-btu twelvek-btu eighteenk-btu twentyfourk-btu residential multi-zone sevenk-btu energy-star finder-item. aaron rodgers pro football reference, michael and justine from love after lockup

So data plate of the condenser shown below indicates it was produced in 2013. . Hvac serial number cheat sheet

HVAC Info Guide 3AFE68338743 (English) Flange Mounting Instructions OPTION MANUALS (delivered with optional equipment) BACnet&174; Protocol 3AUA0000004591 (English) Embedded Fieldbus (EFB) Control 3AFE68320658 (English) MFDT-01 FlashDrop Users Manual 3AFE68591074 (English) OREL-01 Relay Output. . Hvac serial number cheat sheet craigslist mobile al jobs

Class C IP Addresses. The Cisco Nexus &174; 9300-FX Series switches belongs to the fixed Cisco Nexus 9000 platform based on Cisco Cloud Scale technology. The platform support cost-effective cloud-scale deployments, an increased number of endpoints, and cloud services with wire-rate security and telemetry. The schedules fulfill these requirements. The energy-efficient GSXH5 AC by Goodman has up to 17 SEER2 Performance. 04, or 400 ppm Air Free. So I indicates 2002 manufacture. 3) Some manufacturers encode the SEER rating in the beginning of the model number on the data plate of the condenser. ACH550 Users Manual, publication number 3AUA0000081823. Registering your Rheem products allows you to access included warranty benefits, opt to extend warranty coverage and take advantage of other valuable Rheem support services. Carrier Serial Number Style 1 (HVAC Age By Week And Year) Carrier Serial Number Style 2 (HVAC Age By Year And Month) Carrier Serial Number Style 3 (HVAC Age By. The duration of warranty coverage in Texas and Florida differs in some cases. We analyze, translate, and recommend. Trying to decipher the Serial Number with no luck. 5 tons, 36 3 tons, 42 3. found in HVAC systems. PN S12087-06 The CommStat 6 is an HVAC controller, is available in three configurations, and is designed specifically for. B1971 or 1981. Carrier serial number unit comfort located series plate data conditioner air hvac where sizeCarrier hvac age Model number nomenclature ari capacities, cooling capacities andCarrier model nomenclature. 8 FPS. Our industry leading HVAC warranties give professionals and homeowners the peace of mind they need to feel confident choosing Mitsubishi Electric. It supposed to be 5188C01049. Less than 2 air leakages at 1. As low as 73 decibels1 done. Smith - Machinist (name later changed to C. The first two numbers are the year 2017. Benefit from expert insights to optimize the performance and reliability of your heating, cooling, and ventilation systems. So I indicates 2002 manufacture. It doesnt include Westinghouse, and every once in a while I come across another manufacturer thats not included. Below are the most popular brands and how they encode the year within the last 20 years or so. Lennox hvac serial number nomenclatureCarrier serial number identification How to read carrier nomenclatureCarrier hvac. Downloadable PDFs explaining HVAC nomenclature including coding systems, model numbers and more. The XR14 is ENERGY STAR &174; qualified with a SEER2 rating of up to 14. You can adjust your home climate from almost anywhere using a computer or mobile device. The first two numbers of the serial number, after a single letter, are the year of manufacture of the unit for an International Comfort heat pump. Healthy Climate Solutions. Open area of wall and low to the ground. Take this free HVAC practice test to see how prepared you are for an HVAC certification exam. The serial number may be noted on two lines, as below, or one line. Browse these resources from Trane to find information on your unit or system, maintenance tips, common HVAC terms and more. 8, meaning this system meets the strict energy efficiency standards set by the federal government and can cool your home reliably. 3 Aug 16. The model number breaks down as follows the first 4 letters is the model (DGAA) the numbers in the middle indicate the BTUs in thousands (056) the last 3 or 4 letters. Apr 27, 2021 Oxbox HVAC Age. Fresh Access Ventilation Products. To use this cheat sheet, first locate the model number of your furnace by looking at the data plate on the front of your furnace. The account name is the given title of the business account youre reporting on (i. The average service design life of boilers. Amperage, or I, is the number of electrons moving through a wire per second. 49 - Machine or Transformer Thermal Relay. Example serial number stylesformats found Style 1 G051650885; Style 2 L920671787; Style 3 9414B39332; Style 4 30512345; Style 5. 50 - Instantaneous Overcurrent. I'll try to get in contact with the manufacturers and see if they have something to say about it. Save yourself the trouble of Amana serial number lookup this page shows you how to quickly find the age of your. 1 HVAC Master Cheat Sheet Document Revised. The serial number may be noted on two lines, as below, or one line. 47 - Phase-Sequence Voltage Relay. Benefit from expert insights to optimize the performance and reliability of your heating, cooling, and ventilation systems. Cisco ACI CLI Commands "Cheat Sheet" Introduction The goal of this document is to provide a concise list of useful commands to be used in the ACI environment. In the lower middle is the capacitor. Watch32 is the Biggest Library of free Full Movies. Lennox hvac serial number nomenclatureCarrier serial number identification How to read carrier nomenclatureCarrier hvac. 66 Notching or jogging device. Style 2 10 Characters 4 Letters 6 Numbers 1971 to 2001. 65 - Governor. 0e has been upgraded to perform even more amazingly in any setting. The age of the equipment cannot be found in the serial number. When determining a unit&x27;s life expectancy, we are most interested in the year of manufacture, which is the focus of this article. , an HVAC-based training company and membership organization. Decoding both types is the same The 2-digit week first followed by the 2-digit year. The first six digits are the Unit Identity Number. About this HVAC Tip. MFR Date 32017, just as the tag shows. This look-up will not give manufacturing information for any other Weil-McLain product but boilers. Use the HVAC nomencalture guides below to properly identify and understand your HVAC specs, find repair parts, and OEM equipment. From their appearance I would say the furnaces are 1970's also, but I'd like to be more specific. Introducing the ACH580 drives for HVAC. Parent Company. For that reason, our new WindFree 3. Step Four Take the largest imbalance found by step three and divide it by the average volts found in step two. Within this string of letters and numerals, you should find an even, two-digit number. HVAC serial numbers serve as unique identifiers for individual units and can HVAC Serial Numbers Determining The Make, Model, and Age of Your HVAC System - Bowman Heating & Cooling Have you ever wondered about the origins of your HVAC system. Visit the HVAC Navigator website. Determining Manufacture Date. After all, weve been focused on cooling indoor spaces since our founder, Willis Carrier, invented the first modern air conditioner system in 1902. Labor Charge, Warranty Processing Fees, Service Call Charge, etc. Product Registration Public - Johnson Controls. Single Serial Lookup. No more waiting on hold for your manufacturer to unlock the mystery for you, you can crack the code on your own Have Questions About the Age of Your Unit, or Unit Replacement Call Us Today At 508. Lennox REAL - Product Sales Sheet. Hot spots Hot spots Hot spots Hot spots. 2) Look for a sheet taped to the front of the air handler (indoor unit), where the HVAC contractor has listed the performance data for the system. Decode the Carrier Serial Number - 9 and 10 Digits. For older equipment Google can be pretty helpful. The VLT&174; HVAC Drive is a full-featured, HVAC dedicated drive with built-in intelligence. Carrier Serial Number Style 1 (HVAC Age By Week And Year) Carrier Serial Number Style 2 (HVAC Age By Year And Month) Carrier Serial Number Style 3 (HVAC Age By. F 1999. Try assigning the tool different roles, instructions and details. In the lower middle is the capacitor. Any help would be appreciated. Max Heat&174; 3. A selection of safety features, such as Safe Torque Off and Safe Maximum Speed, protect both. Labor Charge, Warranty Processing Fees, Service Call Charge, etc. Communications with the BCD is achieved by calling one of a number of subroutines. 247 Phone (Answered Live) 508. WinGet Cheat Sheet. Make sure air filters and inline strainers are clean. The model and serial number as well as motor, compressor. AO1 software configurable for current or voltage. 65 - Governor. The first two digits 33 tell you in which week of the year the unit was manufactured. The VLT&174; HVAC Drive is a full-featured, HVAC dedicated drive with built-in intelligence. See Nortek. May 15, 2006 Any help would be appreciated. Ten (10) character all numerical serial number. Nov 21, 2007 The cheat sheet Im using for HVAC is one I obtained on this message board a while back. May 29, 2013 I know it is at least 20 years old if not more. . what happens when you mix vaseline and toothpaste together