A few years back two different friends, at different times, both needed their 240 volt electric motor starting caps(one a HVAC air handler blower, and the other a whole house well pump) replaced as the motors were stalled and humming..
The more recent well pump motor being non-operational was more serious, as the house is very rural, and depended on that pump for the house`s water supply, and also a water to air heat pump for HVAC !!
The middle aged woman didn`t enjoy lugging in muck buckets of water from the water to air HVAC water discharge 150 ft. from the house cistern for the toilet use, and being summertime the water to air heat pump system had to be turned off at the breaker, until the house pump cap was replaced, so not to damage the HVAC compressor !
Of course both of these 2 different motor starting caps failed on a weekend(Sunday), but Ace hardware had the exact ~$5:00 replacements, so both were operational as soon as the owners returned with the new cap while I waited and drank some of their beer !!
They greatly appreciated the substantial labor, service call , and no doubt, the excessive markup tacked on to the replacement cap, savings, by my looking at their situation for them.
yea, they were very happy, and I was treated to G&T`s + a very good dinner at each house afterwards..
I felt pretty good for inexpensively helping out two friends on a very hot NE. FL. summer afternoon, too.