Unless you have a gas stove, in which case prolonged boiling could lead to indoor air quality issues (unless you turn your fan on - but then you're drawing in c

Unless you have a gas stove, in which case prolonged boiling could lead to indoor air quality issues (unless you turn your fan on - but then you're drawing in cold air. If you have an electric stove, boiling water will be less efficient than evaporating water and letting your heating system make up for the loss in sensible heat unless you have an electric furnace.