Whirlpool ($WHR) shares collapsed 20% Thursday after the world's largest home appliance maker said the Iran war triggered a "recession-level industry decline" in the United States, with consumer confidence cratering in late February and March as fuel costs surged.

"War in Iran resulted in recession-level industry decline in the U.S. as consumer confidence collapsed in late February and March," Whirlpool stated in its earnings release. The blunt language marks one of the starkest corporate assessments yet of how the 69-day Iran conflict — which has disrupted Strait of Hormuz shipping and pushed national diesel prices to $5.67 a gallon — is flowing through to household spending on large-ticket items.

The appliance sector is acutely sensitive to consumer confidence: refrigerators, washers, and dishwashers are discretionary purchases that households defer under financial stress. Whirlpool's warning is likely to reverberate across competitors including Electrolux and LG Electronics, which will report their own quarterly results in coming weeks.

The result reveals a transmission mechanism the market had underpriced: energy price spikes that begin as supply-chain costs can quickly translate into demand destruction for consumer durables. Whirlpool's -20% single-day decline reflects this repricing of durable-goods earnings sector-wide. The Iran war's consumer-confidence channel may prove more damaging than the commodity-cost channel for domestically-focused manufacturers.

Watch for the April non-farm payrolls report due Friday, peer appliance-maker earnings over the next two weeks, and any Federal Reserve commentary on the breadth of consumer spending weakness. Source: CNBC.

Not investment advice. Verify all figures with primary sources before acting.

#whirlpool

$WHR plunges 20% as Whirlpool cites Iran war for 'recession-level' U.S. appliance decline