s, a, e, g, n, h, m, t, i, y are letters that make 'heating system'
system, heating, heat, he, ti, te, ting, He, at, em, ng, Ea, in, stem, eating, tin, IN, At, In, Te, Ti, eat are words within 'heating system'
1 possible definitions for 'heating system'
Under this definition, heating system is a noun and has the following properties:
heating plant, heating, heat have the same meaning as 'heating system'
'heating system' can be a type of utility.
central heating, gas heat, panel heating, steam heat, steam heating are types of 'heating system'.
boiler, steam boiler, radiator are parts of 'heating system'.
"the heating system wasn't working", "they have radiant heating"