HVAC Guides for Homeowners

How a home HVAC system works

Most homes move conditioned air through a loop. Air is pulled in through return vents, passes through a filter, is heated or cooled, and is pushed back into rooms through supply vents. Keeping that loop clear is the foundation of comfort.

• Return vents pull air back to the system.
• The filter catches dust before it reaches equipment.
• Supply vents deliver conditioned air to each room.

Thermostat basics

Your thermostat tells the system when to run. Small, steady adjustments tend to feel more comfortable than large swings. Many homeowners set a slightly lower temperature in winter and a slightly higher one in summer when the home is empty or overnight.

A simple seasonal checklist

Twice a year, before heating and cooling seasons, a quick walk-through helps you notice issues early.

• Check or replace the air filter.
• Make sure vents are open and not blocked by furniture.
• Clear leaves and debris around any outdoor unit.
• Test the thermostat in heating and cooling modes.
• Note unusual sounds or smells to mention to a qualified professional.