ɐ blˈoʊɚ fˈoːɹsᵻz kˈoʊld ˈɛɹ θɹuː ɐ hˈiːt ɛkstʃˈeɪndʒɚ ænd ðˈɛn θɹuː dˈʌktwˈɜːk ðæt dˈɪstɹɪbjˌuːts ðə hˈɑːt ˈɛɹ θɹuː ðə bˈɪldɪŋ.
A blower forces cold air through a heat exchanger and then through duct-work that distributes the hot air through the building.