Furnace arched roof and air conditioner: what they have in common

1. Step 1. Furnace arched roof — is part of — Oven. The dome holds and reflects the heat.
2. Step 2. Oven — works like — Air fryer. An air fryer is a small oven where a fan drives the hot air.
3. Step 3. Air fryer — has part — Electric fan. A fan.
4. Step 4. Electric fan — has part — Impeller. A fan's blades are an impeller that pushes the air.
5. Step 5. Impeller — is part of — Compressor. A centrifugal compressor is an impeller.
6. Step 6. Compressor — is part of — Air conditioner. A compressor.

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