Why does my cat hide when the furnace turns on?

Your cat likely hides because the furnace start-up is loud, sudden, and unfamiliar.

Why it happens:

• Noise: Clicking, rumbling, blower sounds, and duct pops can be startling.
• Vibrations: Cats feel floor and wall vibrations more intensely than people do.
• Smells and air blasts: Warm air, dust, or a faint burning smell can feel intrusive.

What helps:

• Give your cat a quiet, high-up safe spot like a cat tree or shelf.
• Reward calm behavior with treats when the furnace first kicks on.
• Use white noise or soft music to mask the sudden sound.
• Keep the system clean and serviced so it runs more quietly.

If the furnace suddenly sounds much louder than usual, check it and replace the filter or schedule maintenance.