System type
Furnace & Heating Systems
A furnace heats air using a burner or heating element and pushes it through ductwork to registers throughout the home. Gas furnaces are the most common in areas with natural gas service, with electric and oil furnaces used elsewhere depending on regional availability and cost.
Good fit for
- Homes in colder climates that need consistent, whole-home heat
- Households with existing ductwork already in place
- Replacing an older furnace nearing the end of its typical lifespan
- Pairing with central air conditioning on a shared duct system
Worth considering
- Efficiency is rated by AFUE — the percentage of fuel converted to usable heat
- Fuel type availability and local pricing affect long-term operating cost
- Proper venting is a safety requirement, not an optional detail
- Correct sizing avoids short-cycling and uneven heat distribution
Questions to ask a company
- What AFUE rating and fuel type make sense for this home and area?
- How was the furnace sized for my home?
- What does proper venting look like for the model you're proposing?
- What's the expected lifespan and maintenance schedule for this equipment?
Related services
Furnace Repair
Furnace not heating, cycling on and off, or making unfamiliar noises? Get connected with a company that handles furnace calls.
Learn moreFurnace Installation & Replacement
Replacing an aging furnace, or installing a new heating system? Talk through sizing and options with a local company.
Learn moreHeating Maintenance
A pre-season furnace tune-up helps catch small problems before the coldest weeks of the year.
Learn more