Strange smells, banging noises, rising bills — here’s how to know when furnace replacement is unavoidable.
Furnaces don’t fail without warning. Watch for these 7 signs.
1. Age: 15+ years old. Replace before you have a failure during a cold snap.
2. Rising gas or electric bills with no other explanation.
3. Yellow flame instead of blue (gas) — this is a combustion problem and a safety issue.
4. Banging, popping, or rattling at startup.
5. Uneven heating across rooms.
6. Frequent repairs — if you’ve replaced the gas valve, ignitor, and inducer in the last 3 years, you’re throwing good money after bad.
7. Visible rust or cracking on the heat exchanger — stop using immediately and call us. This is a CO risk.
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