Northbrook's two kinds of houses and what fails in each
Northbrook uses Lake Michigan water, which is moderately hard and consistent. Scale builds slowly on ice makers and dispenser valves over years, so water is a background factor here rather than the headline. The bigger story is the housing.
In the original ranches and split-levels, the laundry sits in the basement, often near a sump pump and floor drain. Some neighborhoods along the branches of the Chicago River have dealt with water in basements during heavy storms, and any washer, dryer or freezer that sat in water needs careful testing, and we do that before quoting a washer repair. Older kitchens may still run on circuits sized for far fewer appliances.
The rebuilt homes are a different world. Large kitchens hold built-in refrigerators, induction cooktops, steam ovens and Wi-Fi-connected appliances; laundry has moved upstairs. These appliances are efficient and powerful, but their electronics are sensitive to surges, and upstairs laundry means a leak can damage finished ceilings. A failing sensor or board can stop a whole appliance, so diagnosis matters more than ever. That's especially true for induction cooktop repair, where one bad power board can take out several zones at once.