Tank Level
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The pads are on a switch nobody checks
Holding tanks freeze slower than water lines and cost more when they go. The reading that matters is not the tank temperature – it is the difference between the tank and the bay around it.
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Fresh going down, gray coming up
A tank that will be a problem on Thursday is already saying so on Tuesday. How to read fresh, gray and black, and why the two directions together catch a leak that neither number catches alone.
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A door is a moment. Water is an afternoon.
A bay can be opened, emptied and shut again between two polls, and the door sensor will honestly show nothing. What a person cannot do is put back the water they used or the propane they burned.