How Does Ventilation Work?
Ventilation is defined as the act of supplying fresh air into a room or building. It’s one of the most important parts of the HVAC process – without ventilation, your heating and air conditioning couldn’t get the job done. Your home wouldn’t be as comfortable as you’d like it to be. More importantly, it might not be as safe.
According to the EPA, most Americans spend, on average, 90 percent of their time indoors. They move from home to office, and back again, breathing in the air supply within closed spaces. Studies show this air supply is often 2 to 5 times more polluted than outside air.
The job of your home’s ventilation system isn’t just to bring clean air in, it’s also to mix the existing air that resides in each room with a fresh air supply. The fresh air is meant to displace the existing air that already resides in the room. If that isn’t performed properly, that’s when your home’s air supply is compromised.
How home ventilation works
Your home needs to breathe. Using a series of vents, it should take in fresh air while exhausting stale air. Some experts recommend that a home should exchange air supply by almost one-half a home’s air volume each hour.
In the spring and fall, you can help the process by opening up doors and windows. That doesn’t make much sense in the winter and summer when you’re paying good money to condition your air supply with your furnace and air conditioner.
Your house accomplishes this through a series of vents and fans that exist throughout your home. It’s important to have the right equipment in every room, your attic, basement, and crawl space.
Exhaust fans help push warm air flow out through roof vents.
Intake vents draw cooler air in through the eaves or soffits.
Vents and ducts help lead conditioned air throughout your home.
If any of these pieces don’t work the way they should, your air supply is compromised. The best way to ensure it’s working its best is to schedule maintenance visits at the start of each season.