In order to use this form, you will be required to make a $15.00 (US) non-refundable contribution via PayPal for our research time.

If you are not prepared or willing to make this contribution, please do not proceed.

We offer absolutely NO REFUNDS!!!

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If you are requesting ANYTHING other than decoding the serial number to determine the age of manufacturer, your request will be summarily ignored! Do NOT ask for system sizing, wiring diagrams, or manufacturer documents!! WE CANNOT HELP YOU!

We want to make sure you have exhausted all other means of research. Please complete the following steps:


CLICK HERE!!! for information on how to use this site and helpful techniques to approximate the age of manufacture for your heating, cooling, and water heater equipment.


Please read ALL of the following CAREFULLY...

  • If the manufacturer brand and/or serial number style/example are NOT listed on our website, THERE IS A STRONG POSSIBILITY WE HAVE ABSOLUTELY NO FURTHER INFORMATION TO ASSIST YOU!!! You will NOT be refunded if we cannot assist you!!
  • MANY brands and manufacturers have MULTIPLE examples or styles of serial numbers. PLEASE be sure that you have reviewed ALL examples that have been listed on the appropriate page of that particular brand or related manufacturer prior to submitting your request. (Make sure your browser settings allow viewing of JPG images and you have scrolled through all available sample styles in those images)


By requesting administration assistance for age determination of your furnace, air conditioner, boiler, or water heater, users of this site hereby acknowledge they have read and agree to the following:

  • This site is for informational purposes only. Visitors to this site use the information provided and/or requested AT THEIR OWN RISK.
  • This web site and/or provided assistance should not be relied upon for commercial or legal use or interpretations. Accuracy and reliability of the information provided is believed accurate but is not guaranteed. The burden for fitness of information provided relies solely and completely with the user. 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 the use of or reliance on the information provided within.
  • The Building Intelligence Center and its administrators are NOT in any way affiliated with the manufacturers, trademarks, or brands represented on this site.
  • The Building Intelligence Center does NOT sell, manufacture, install, repair, provide, diagnose, OR distribute ANY related equipment, parts, manuals, sizing charts, cost estimates, ratings, unit weights, or recommendations related to HVAC units or water heaters.
  • The Building Intelligence Center is NOT affiliated with and DOES NOT recommend any specific agencies, tradesmen, companies, businesses, or individuals for repairs, diagnostics, or installations.
  • By submitting your request for age determination assistance, users acknowledge that the administrators quite likely may not be able to provide full or timely assistance.
  • To account for our time in researching your assistance request, users must make a non-refundable minimum contribution of $15.00 US dollars. NO REFUNDS!!
  • Individuals providing us with new information to make this data base better, please use THIS FORM.
  • If the requested data provided by you is incomplete or incorrect in ANY way, we CANNOT assist you.


Please provide a CLEAR photo of the date plate!!!  If you don't have one, go back and get it! Get several of the full data plate, unit, and anything else that may help us to help you!

It is highly likely (and very common) that the serial numbers were incorrectly transposed or the wrong number provided to us when you submit the information. We cannot be responsible for incorrect information provided to us by you. Photos help us with additional clues. If you have no photos, we may not be able to assist you.


Please ensure that you have included accurate and correct information in the form. We cannot be responsible for missing, incomplete, or improperly transposed information. Complete model and serial numbers are required in order to provide accurate assistance.

  • We do NOT sell or distribute parts!!!
  • We do NOT diagnose problems!!!
  • We do NOT provide wiring schematics!!!
  • We do NOT perform repairs!!!
  • We do NOT provide repair or replacement opinions!!!
  • We do NOT determine system size, ratings, or adequacy!!!

Utilizing this service DOES NOT guarantee we can provide assistance to you or precisely date a system or component.

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