: an enclosed structure in which heat is produced (as for heating a house or for reducing ore)
Examples of furnace in a Sentence
Recent Examples on the Web
The South Coast Air Quality Management District — responsible for regulating industrial plants and products that pollute the LA basin’s air — recently rejected rules phasing in zero-emission water heaters and furnaces.
—
Calmatters, Mercury News, 8 July 2025
Carbon monoxide poisoning Extremely cold weather can create power outages and cause people to turn to alternative measures of heat, such as generators, furnaces and stoves, to warm their homes.
—Elizabeth B. Kim, The Enquirer, 2 July 2025
At Kellogg’s home, work included new gutters, a new furnace and water heater, repainting six rooms and replacing a concrete patio in the backyard.
—Mike Nolan, Chicago Tribune, 24 June 2025
The state is working to implement electrification initiatives, and officials at CARB also are moving toward a statewide ban on gas furnaces and water heaters by 2030.
—Hayley Smith, Los Angeles Times, 4 June 2025
See All Example Sentences for furnace
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Calmatters, Mercury News, 8 July 2025
Carbon monoxide poisoning Extremely cold weather can create power outages and cause people to turn to alternative measures of heat, such as generators, furnaces and stoves, to warm their homes.
—Elizabeth B. Kim, The Enquirer, 2 July 2025
At Kellogg’s home, work included new gutters, a new furnace and water heater, repainting six rooms and replacing a concrete patio in the backyard.
—Mike Nolan, Chicago Tribune, 24 June 2025
The state is working to implement electrification initiatives, and officials at CARB also are moving toward a statewide ban on gas furnaces and water heaters by 2030.
—Hayley Smith, Los Angeles Times, 4 June 2025
See All Example Sentences for furnace
Cite this Entry
“Furnace.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/furnace. Accessed 6 Aug. 2025.
Copy CitationKids Definition
furnace
noun
fur·nace
ˈfər-nəs 
: an enclosed structure in which heat is produced (as for heating a house or melting metals)
Love words? Need even more definitions?
Merriam-Webster unabridged
Share