Temperature rise calculations?
I'm trying to figure out if the hot water heating system installed in a house is adequate to heat the house in the winter. I tested the heat production by turning the furnace on for an hour and seeing how much the temperature rose. (Outside temperature was about 70.)
It went from 71 degress to 78 degress in one hour, which seems to me woefully inadequate for a 2,500 square foot house just outside of New York.
Does anyone know what a decent heating system should produce, not in BTUs but in temperature rise, for an older house in NY (built in 1940), with mediocre insulation, single-pane windows, etc.? Not looking for pinpoint accuracy here, just a rough estimate.