Cooling

Front Range summers are hot by day, cool by night and dry most of the time, which is why rooftop evaporative coolers still sit on so many brick ranches from the 1950s to the 1970s. These features weigh coolers against central air and heat pumps, walk through a cooler's spring start-up and fall shutdown, deal with hail on the outdoor unit, the second floor that won't cool, and older houses with no ducts at all.