Age Air Temp A/C and Furnace

Specific Inspection Topics Inspecting HVAC Systems
1

Can someone help me with the age of a Air Temp A/C & Furnace.
A/C model 1273-00Q serial number 3F003642. Furnace model 4211-30, serial number 3B962476.

THANKS! IN ADVANCE FOR YOUR HELP.

2

Buck

For the furnace it is between 1966-1974. Need the A.F.U.E to pinpoint the year.

The A/C I need the letters in the model # to determine. I believe it is a RC-A between 1970-1976.

This information is from the preston guide and may not be 100% accurate.

Dave

3

I have a model 4211-30 air temp furnace a/c I need to replace the blower. How do I find the part number for it?