Greystone two-flats and brick bungalows from 1910 to 1940 were built on a basement boiler and a single steam main. Peoples Gas still feeds a lot of those fireboxes. A ductless heat pump can take the parlor and the bedrooms without opening the plaster.
Ask for a heat pump sized to keep your home warm on the coldest usual winter day. The price uses the IL and utility programs your address qualifies for. No sales call, no information sold, no pressure.