The most common and most likely answer to this crossword clue is the 7 letter word BRAZIER
I've seen this crossword clue in The Times
B
R
A
Z
I
E
R
More clues leading to the result BRAZIER
- Charcoal burner's bizarre working
- Heater pipe filled with gauze regularly losing fragments
- Builder's outside, less inclined to work deprived of large heater
- . Adapt bizarre container for burning coals
- Bizarre to find a barbecue in America
- Fire-holder is less rational, caught going for book
- Country’s short queen gets portable heater
- One makes nut roast using bizarre cooking
- British Caucasian bringing up one metalworker
- Metalworker’s fireplace
Buddy explains!

The straight part
We know that "heater" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case heater = brazier.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BRAZIER mean?
BRAZIER noun- An upright standing or hanging metal bowl used for holding burning coal for a source of light or heat.
- A worker in brass.