HEIL split sysstem age

Anyone know how to tell the age of HEIL and any other AC manufacturers equipment?

Do you have CarsonDunlap Technical Reference Guide or Prestions Guide? They are very helpful.

I think heil’s serial number is a letter then the next two digits is the age???

Do you have the model number?

Thanks Randy,

I don’t have either of those documents. i guess I need to see about purchasing them.

Here are some: http://theloghomeinspector.com/?D=156

Just saw them on Kentons site and it was easier. :smiley:

Good job kenton