5 signs your furnace needs replacing

A furnace usually lasts 15–20 years. Here is how to tell it is time for a new one.

1. Age over 15 years

Older units lose efficiency every season, and parts get harder to find.

2. Rising energy bills

If your bills climb while your usage stays the same, the system is working harder than it should.

3. Frequent repairs

When a repair costs more than half the price of a new unit, replacement is usually the smarter choice.

4. Uneven heating

Cold rooms and hot spots point to a worn blower or failing components.

5. Strange noises or smells

Banging, rattling or a burning smell is a reason to call a technician right away.