Building Intelligence Center
building-center.org
Building Intelligence Center | Your #1 resource for determining the date of manufacture or age of HVAC & Water Heater equipment.
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. Visit the appropriate index page from the menu or buttons above where alphabetized lists of manufacture brand names have been provided.
HVAC Brand Index
The Building Intelligence Center · Select one of the drop-down lists below that corresponds to the 1st letter of your HVAC brand name. Then make your selection from the Brand Names list
Estimated Useful Service Life Data
Decode HVAC size information · Recall Search Tool · Decode Small Appliance Serial #’s · EPDM Roof Date Codes · IRC reference index · Service Life Data · FAQ’s · Hints & Tips · Send us Updated info · Contact Us · Community Forum · Fee Calculators ·
How to Use This Site & FAQs
Our most popular sections on this site are serial number age decoders for Water Heater brand listings, and for HVAC related equipment (Furnaces, Boilers, Air Conditioners, & Heat Pumps). Each directory lists brand names alphabetically.
Water Heater Brand Index
Appliances & HVAC Recall Search · EPDM Roofing Date Codes · IRC Quick Reference Links · Fee Calculators · Brand Histories · Offline Reference e-Books · Estimated Useful Service Life Data · Blog · Join · Teams and Group Discounts · Login · Search · PREMIER Sponsor of · The Building Intelligence Center! Tips to estimate the age without a serial number ...
Comfort Monster
comfortmonster.com › home › knowledge center › how to identify your system make, model, size, age and type
How to Identify Your System Make, Model, Size, Age and Type - Comfort Monster
May 18, 2025 - If you are unable to read the label you can look down into the condensing unit from the top to see the compressor and often use the compressor part number to determine the tonnage using Google. The age is generally encoded into the serial number. Many manufacturers do it differently and most have changed the way they do it over the years.
Videos
Parts Town
partstown.com › cm › resource-center › guides › gd2 › york-serial-number-lookup
York Serial Number Lookup | Parts Town
Find out how to read the serial number and where to locate the data plate on your York HVAC unit in our easy-to-follow guide.
Electrical Forensics
electrical-forensics.com › HVAC › AirConditionerDateCodes.html
Air Conditioner Date Codes
The first pair of numbers is the year, and the second pair of numbers is the week. For Example, Model No.: NAC042AKA5, SN: E031136011 was Manufactured in 2003, Week 11. Since 1974, the first and second digits are the manufacturing plant; the 3rd and 4th are the decade and year, and the 5th ...
Nationalcomfortproducts
nationalcomfortproducts.com › find-age-of-unit
Find Age of Unit | Thru-the-Wall Multi-Family Heating & Air Conditioning
You can also use this form to LEARN THE AGE of your unit to determine if it is still in warranty, please click here to download the Serial Number Code/Age of Unit form pdf.
Rheem
rheem.com › home › rheem model serial numbers
Rheem Model Serial Numbers - Rheem Manufacturing Company
July 3, 2025 - To better assist your independent HVAC contractor, please furnish the model and serial numbers on each piece of your equipment and the date of installation. First, determine the type of equipment from the two categories shown below.
NACHI Forum
forum.nachi.org › specific inspection topics › inspecting hvac systems
serial/age of Westinghouse furnace, & newer cheat sheet - Inspecting HVAC Systems - InterNACHI®️ Forum
May 24, 2006 - Serial numbers are all in this series: Q27291, Q27292, etc. From their appearance I would say the furnaces are 1970’s also, but I’d like to be more specific. How can I find out their ages? The cheat sheet I’m using for HVAC is one I obtained on this message board a while back.
Building Intelligence Center
building-center.org › hvac-table-of-contents-2
HVAC Table of Contents 2 | Building Intelligence Center
Appliances & HVAC Recall Search · EPDM Roofing Date Codes · IRC Quick Reference Links · Fee Calculators · Brand Histories · Offline Reference e-Books · Estimated Useful Service Life Data · Blog · Join · Teams and Group Discounts · Login · Search · PREMIER Sponsor of · The Building Intelligence Center! Tips to estimate the age without a serial number ·
HVAC-Talk
hvac-talk.com › home › forums › general forum › general discussion
Nomenclature cheat sheet | HVAC-Talk: Heating, Air & Refrigeration ...
Gosh jt, That was a "walk down memory lane".:grin2: Wish they had included Trane "Type" #'s. Old Lennox's were always a "math lesson". Carrier is a bit confusing now with the 3 digit gig.We were replacing a 5 ton 3ph awhile back and I called the Office to ask "why" we had a 3 ton just from the physical size & 360 #. York Serial # is too.
Reddit
reddit.com › r/hvac › do you guys have a reference guide to reading model/serial numbers for different equipment brand?
Do you guys have a reference guide to reading model/serial numbers for different equipment brand? : r/HVAC
November 2, 2021 - A subreddit for Heating, Ventilation, & Air Conditioning Technicians. If you are not a member of the trade, please post in our Q&A sub, r/hvacadvice.
TikTok
tiktok.com › skillit (@skillitusa) | tiktok › 🔍 hvac pros, ever struggled to find the model or serial number? here's a game-changing hack for you! grab a marker, give it a little rub, and watch the hidden details reveal themselves. 🕵️♂️✨ #hvac #hack #tradesecret #hvaclife #diy #handyman #hvacservice #tradehacks #prohack #construction credit: @ezra detert
🔍 HVAC pros, ever struggled to find the model or serial number? Here's a game-changing hack for you! Grab a marker, give it a little rub, and watch the hidden details reveal themselves. 🕵️♂️✨ #HVAC #hack #tradesecret #hvaclife #diy #handyman #hvacservice #tradehacks #prohack #construction Credit: @Ezra Detert | TikTok
106 Likes, TikTok video from Skillit (@skillitusa): “🔍 HVAC pros, ever struggled to find the model or serial number? Here's a game-changing hack for you! Grab a marker, give it a little rub, and watch the hidden details reveal themselves. 🕵️♂️✨ #HVAC #hack #tradesecret #hvaclife #diy #handyman #hvacservice #tradehacks #prohack #construction Credit: @Ezra Detert”. this feeling - Øneheart.
Day & Night
dayandnightnorthwest.com › how-to-tell-the-age-of-my-day-night-ac-unit
How To Tell The Age Of My Day & Night AC Unit? | HVAC
March 14, 2025 - First Two Digits: The first two digits usually represent the year of manufacture. For example, if the serial number begins with “14,” this means the unit was made in 2014.
Address United States
Cleancomfort
cleancomfort.com › resources › faq › how-can-i-confirm-the-model-and-serial-numbers-for-my-cooling-system
HVAC FAQs
The model and serial number can be found on the rating plate of your air conditioner or heat pump. This is generally found slightly above the refrigerant valves on the back side of the unit. Additionally, many local Franklin® brand dealers will affix the “traveler label” from the shipping ...
Usair-eng
usair-eng.com › Serialnumber.pdf pdf
York Serial Numbers ID FROM HISTORY TO OCTOBER 2004 X X X X 9 9 9 9 9 9
York Serial Numbers ID · FROM HISTORY TO OCTOBER 2004
Hinarratives
hinarratives.com › reference › hvac-water-heater-date-of-mfgr-codes
HVAC Date of Mfgr. Codes – InterNACHI Inspection Narrative Library
HVAC & Water Heater Date of Mfgr. Codes ... Stormwater Mgmt. Systems ... Using information from the Building Intelligence Center you can use a serial number to determine the date of manufacture for HVAC equipment and water heaters.