Free HVAC Tool
HVAC Serial Number Lookup
Pick your brand to instantly decode the age and size of any furnace, air conditioner, or heat pump — then see what it costs to replace it factory-direct and save 40–60%.
21 manufacturers · updated for 2026
Choose your manufacturer
Every brand codes its serial number differently — and many “different” brands are actually the same company. Tap yours to decode it.
Carrier Global
Carrier (ICP)
Trane Technologies
Lennox International
Rheem Manufacturing
Johnson Controls
Daikin
Nortek (MRCOOL/Nortek Global)
Mitsubishi Electric
Fujitsu General
Bosch Home Comfort
Why the age & size matter
If your system is past ~12–15 years and facing a big repair, replacing usually wins. Knowing the tonnage means you can price an exact replacement in minutes. Furnace Direct ships the same equipment the pros install — factory-direct, no markup. Call (888) 762-1334 and we'll read your nameplate with you.
Know your unit? Get a factory-direct price.
No appointment, no salesperson — just the number.
Call (888) 762-1334Serial/age estimates are provided as a convenience; the manufacturer's rating-plate date governs. All brand names are the property of their respective owners and are used for identification only.