gas-furnace

Definition

1. Noun:
   • A furnace that uses gas as fuel: A "gas-furnace" is a heating appliance that burns natural gas or propane to generate heat, typically used for warming buildings or for industrial processes.

Usage Examples

• (A furnace that burns gas for home heating.)
• (An industrial furnace using gas fuel.)

Advanced Usage

• "to fire up the gas-furnace": to start or activate a gas-furnace.

  • He fired up the gas-furnace on the first cold day of autumn. (He turned on the gas heating system.)

• "gas-furnace efficiency": a measure of how effectively a gas-furnace converts fuel into heat.

  • A high-efficiency gas-furnace can save you money on energy bills. (The furnace uses less fuel for the same heat output.)

Variants and Related Words

• Gas furnace (noun phrase): alternative spelling (often written as two words).

  • The gas furnace needs annual maintenance. (The same appliance, written without a hyphen.)

• Gas-fired furnace (noun phrase): a furnace that is powered by gas combustion.

  • A gas-fired furnace is common in many homes. (Another term for a gas-furnace.)

Synonyms

• Gas heater: a device that heats air or water using gas, but usually smaller and less powerful than a furnace.
• Gas boiler: a device that heats water using gas, often for central heating systems.

Related Idioms

• No direct idioms: The word "gas-furnace" is a technical term and does not appear in common idiomatic expressions. However, it may appear in metaphorical contexts:
  • The debate turned into a gas-furnace of anger. (A figurative use meaning an intense, heated situation.)