Jump to content

Update to Furnace Age Chart

Recommended Posts

Look at the last paragraph i.e. 1970 and later, a letter followed...

It's back to 'First four digits of serial...'. at least since 1998.


I see.

Actually, that section is missing several other iterations of Carrier serial number from older units, though they're probably getting pretty rare these days.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...