She had a blanket over her knees at two in the afternoon, and the thermostat four steps down the hall said seventy-two.

First real cold snap of October, the kind where the wind comes down out of Kansas and finds every gap a house has. Brick ranch from the early nineties, north of town, long and low, with the living room on the north end: three outside walls and a run of windows looking out at drilled wheat. A retired couple, both of them home all day now. He called me. He said the furnace was fine, he just needed somebody to tell his wife that.

That is how he put it on the phone, and I have heard that sentence, one way or another, more times than I can count in 47 years.

She was in the living room when I got there. Fleece pullover, blanket, both hands around a coffee mug she was not drinking. He met me in the hallway in a T-shirt and pointed at the thermostat. Seventy-two. Set at seventy-two, holding seventy-two. "You tell me," he said.

Another company had been out the week before. They checked the furnace, checked the gas pressure, checked the temperature rise, and wrote on the ticket that the system was operating normally. Then they told her to turn it up if she was cold. She had tried that. At seventy-six he was sweating in the hallway and she still had the blanket.

So I did not start at the furnace. I asked her where she sits and when she feels it and where on her body. The couch, she said, from about three in the afternoon on, and it was her feet and her face more than anything. Her feet never warmed up. Her face felt like somebody had a window cracked.

Then I went and sat where she sits.

Core line: "He had people lie in a scanner and hold a small cooled metal probe in one hand while he stepped the temperature down a few degrees at a time, nothing painful, just cool to cold."

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