What is "toplo"

Toplo ( Bulgarian language: Топло, English language: Warmth) is a comedy film released in Bulgaria in 1978. It was written and directed by Vladimir Yanchev. The film satirizes the eternal fear of all Bulgarians to have contractors fixing problems in their houses. The story develops at the end of the seventies, the time of the vast expansion of the centralized system for heat- and warm water supply, in Sofia.