HVAC for Single Story Homes

Single-story homes generally have the simplest HVAC layout of any home type, one level, one thermostat, and duct runs that don't have to fight gravity or long vertical distances. That simplicity doesn't mean every single-story home is set up correctly, though, undersized ductwork, a poorly placed thermostat, or a system that was never properly sized for the home's actual layout can still cause real comfort problems.

Common Systems in Single Story Homes

• A single central split system (indoor air handler or furnace plus outdoor condenser) is the most common setup
• Packaged units (a single outdoor cabinet housing both heating and cooling) are common in some single-story homes, especially where indoor space is limited
• A single, centrally located thermostat is usually sufficient, though larger single-story homes sometimes benefit from zoning

Key Considerations

• Larger single-story floor plans (especially long, narrow layouts or homes with additions) can still see uneven comfort between rooms far from the system
• Thermostat placement matters, one installed in direct sun, near a kitchen, or near a supply vent can give inaccurate readings for the rest of the home
• A single-story home doesn't need a bigger system just because it's single-story, correct sizing is still about actual square footage, insulation, and layout, not the number of floors