Heat Controller Inc.

Specific Inspection Topics Inspecting HVAC Systems
1

Need help with the age.

MN - QCH36-1
SN - 28903 160610

Thanks.

2

Anyone?

3

For the record, the first # is the plant, the 2nd and 3rd are the year, and the following two are the month.

So in this case, it was manufactured in March of 1989.

BTW, I apologize to those of you who knew or informed me in one of the many replies received, I didn’t have time to read through them all.:mrgreen: