First Co. HVAC Age Lookup by Serial Number
Decode your First Co. serial number to find the manufacturing date, system age, and maintenance recommendations. Free and instant. No account needed.
Finding Your First Co. Serial Number
Check these four spots on your HVAC system
Common Locations
What to Look For
- White or metallic manufacturer sticker
- Labeled "Serial No." or "S/N"
- Typically 8–12 characters long
- Usually near the model number
Can't find it? Try the electrical access panel on the front of the outdoor unit or inside the air handler cabinet.
Serial Number Examples
Don't worry if yours looks different — each brand has multiple formats and our system can decode most variations.
About First Co. HVAC Systems
First Co. (First Company) is a Dallas-based manufacturer specializing in multi-family HVAC systems including water-source heat pumps, air handlers, and fan coils. Enter your serial number above. The first letter encodes the year and the next two digits encode the month.
Supported Brands
Share this tool with friends!
The free HVAC age checker
Need an HVAC pro? Get free quotes from trusted local HVAC contractors
Are you an HVAC contractor? Learn about our partner programShare this tool with friends!
The free HVAC age checker