Electricity heats about six in ten Marshall owner homes, and propane and wood most of the rest; natural gas lines barely reach 20115. Most of that electric heat comes from a heat pump, so the same outdoor unit handles August and January. A capacitor or contactor that’s starting to go will quit in the next season that leans on it, and a summer visit can catch it first.
In a propane house, about one owner home in five here, the cooling is either an air conditioner on top of the propane furnace, sharing its blower, or a heat pump with the furnace as backup. Either way one fan moves the cooled and the heated air, so a tired blower gets noticed in summer and winter alike.
The village’s oldest houses were never built for central air. The County’s plan describes I-houses on Main Street, two stories tall and one room deep, story-and-a-half frame houses on Anderson Avenue from the 1920s to the mid 1940s, and Cape Cods among its Colonial Revival houses. Ducts in houses like those went in later, often with long runs upstairs and one small return, and a starved return is a common way a coil freezes. Where there’s nowhere to hide ductwork, ductless heads on the wall are often the better fix, and we repair those too.
North of Main Street the plan dates many houses to the 1960s through the 1990s, and the median owner home in 20115 is from 1986, so most have gone through two or three systems by now. If the outdoor unit predates 2010 it probably holds R-22, and since nobody makes that refrigerant anymore, a leak turns into a choice between repair and replacement. You’d see both prices.