What you can do here
HVAC Judge began as an independent HVAC reference site in 2020. Look up supported serial-number patterns, estimate equipment age, compare planning costs and explore equipment guides. Each tool explains its inputs and limitations alongside its result.
What you cannot do here
We are not an equipment manufacturer, an official brand support channel or your HVAC contractor. A calculator result is not a diagnosis, a load calculation, a warranty determination or a quote. Serial-number formats can change by factory and production period, so verify important decisions with the manufacturer or a qualified professional.
How we work
Lookups show the supported serial format and calculators explain their assumptions. If a serial format cannot be identified, verify its date with the manufacturer.
Found something unclear or incorrect? See the contact page to report a problem.