# AC and furnace age replacement checker

Compare a known equipment age with published lifespan ranges. This is a prompt to review condition and repair options, not a failure prediction or a replacement instruction.

Use the tool on the [web page](https://hvacpros.fyi/tools/hvac-age-checker). It works without JavaScript.

## How to use it

1. Choose equipment type.
2. Enter known equipment age in years.
3. Read the result.

## How it works

HomeGuide, AC Repair Cost, fetched 2026-11-10: https://homeguide.com/costs/ac-repair-cost . The page gives a maintained air conditioner lifespan of 12 to 15 years.

HomeGuide, New Furnace Replacement Cost, fetched 2026-11-10: https://homeguide.com/costs/new-furnace-replacement-cost . The page gives gas and oil furnaces 15 to 25 years, electric furnaces 20 to 30 years, propane furnaces 15 to 20 years, and a general furnace range of 15 to 30 years with proper maintenance.

The first matching rule applies. An age above the upper value is above the range. An age equal to the lower or upper value is within it. A lower age is below it. No repair-price ratio, efficiency assumption or remaining-life calculation is used.

These are general editorial lifespan estimates, not equipment warranties. The input limit of 100 years is a form limit, not a claim about service life. The tool does not apply a legal replacement rule or assess safety.

> General information only. Published lifespans are not failure deadlines. This tool does not inspect equipment, assess safety or predict remaining service life.

## Questions

### Does the result mean I must replace the system?

No. Ask for a diagnosis and compare condition, repair history and written options. Age alone cannot decide.

### What if I do not know the age?

Check the installation invoice or ask the manufacturer or contractor for help. Do not enter a guessed age.