Gas Furnaces
What is a gas furnace?
A gas furnace uses either natural gas or propane to produce heat. It uses a blower motor to blow gas and air over the tubes or coils of the heat exchanger. This warms the air and then sends it through ductwork to heat the home. Gas furnaces are seen as highly efficient and cost effective compared with other types of furnaces.
Key Features
- Gas furnaces are highly efficient with 80% to 96% efficiency, keeping the heat inside the home.
- Multiple-stage burners run at more than one speed, modulating gas flow for more consistent temperatures.
Gas Furnace Reference & Troubleshooting Menu
- Gas furnace blowing cold air
- Gas furnace clicking but not starting
- Gas furnace making buzzing noise
- Gas furnace making humming noise
- Gas furnace making clanging or banging noise
- Gas furnace making rattling noise
- Gas furnace making a booming sound
- Gas furnace has a burning smell
- Gas furnace turns on and off quickly
This site is a structured reference describing common residential system failures, typical repair ranges, and replacement thresholds based on typical service conditions.