Ustedes - do you Tiene - have or tienen - does it have a direct translation. Calor - hot. Am I right?
It's kind of idiomatic but tener + adjective is used to describe emotions or states of being...
¿tienes calor? - Are you hot?
tengo sueño - I am sleepy.
Explained more here:
That's a word-for-word translation, but not what the question is asking. Your question is asking if someone's residence has a furnace or central heat.
See what spiceyokooko explains above. English speakers ask "Are you hot?", but Spanish speakers ask "Tienes calor?"(you singular ) or "Tienen calor?" (you plural)