Floor vent filters offer short-term benefits but are generally not advisable as a long-term solution because they can disrupt airflow balance, energy use, and system performance. High-quality central filters and routine HVAC maintenance are more effective solutions for improving air quality.
So, should return vents have filters? While return vents don't always require filters, adding them provides additional filtration, improving indoor air quality and keeping dirt and debris out of your system.
Putting filters in air return vents is generally not recommended for several reasons: Airflow Restriction: Return vents are designed to allow air to flow back to the HVAC system. Adding filters can restrict airflow, leading to reduced efficiency and potential strain on the system.
Air registers are essential mechanical components to a building's HVAC (heating, ventilation, air cooling) system. They cover a hole in the wall, floor or ceiling where the air duct enters the room.
In the HVAC industry, filters with MERV-13 or higher ratings are typically recommended (MERV ratings go up to 20). Higher-rated filters trap smaller particles. Some are fine enough to capture viruses.
Air Filter Replacement: One of the simplest and most effective ways to get rid of bad smells is to replace the air filter.
Pleated filters with MERV ratings from 5 to 8 are classified as medium filters and are the most common in residential HVAC systems.
The wrong register can reduce the air flow, resulting in uncomfortable temperatures and building code violations.
Symptoms include weak airflow and uneven cooling or heating throughout your home, with some rooms feeling much cooler or warmer than others. Homeowners should regularly check vents for consistent airflow. If you notice a significant drop in air pressure or uneven temperatures, it could indicate return air issues.
The supply vent (meaning the vent from which the hot or cold air is coming into your home) of your HVAC system is covered by a register. A register has a damper and this is what sets it apart from other vent covers and grills.
How Often Do I Need to Change Out My Air Filter? Generally, most air filter manufacturers and HVAC companies recommend changing your air filter every 90 days, or 3 months. That can change based on where your home is located (ex. dusty, dry climates), if you have any pets, and the age of your system and equipment.
Use your vacuum cleaner's hose attachment to clean the return's interior and surrounding areas. Then use a soft-bristled brush to clean the grille thoroughly. Wipe down the grille with your microfiber cloth and cleaning solution before reinstalling.
Yes, you need to have properly sized air filters in your return vents. Not only does this help clean the air circulating throughout your home, but it also helps your central air unit run efficiently.
Duct booster fans are a good option when some rooms are too hot or cold compared to others. If your heating or cooling system struggles to distribute air evenly, a duct booster fan can help improve airflow throughout the system and your home.
Remember How Air Flows
If it's hot outside and your vents are located near the floor, then you should adjust the vents so that the cold air will flow upward. If it's cold outside and your vents are located near the ceiling, then you need to point the vents downward.
Can You Have Too Much Return Air? Too much return air coming through your system isn't much of an issue because the fans and ductwork working to get that air back into the system only pull with so much force to make the HVAC system work correctly.
Due in large part to the short cycling issues mentioned above, components on an oversized heating and/or air conditioning systems are more likely to fail sooner than those on a properly sized system. As a result, you may end up having to replace your HVAC system sooner than expected.
In conclusion, installing filters on AC vents is a practical and effective way to enhance indoor air quality, improve HVAC efficiency, and promote better health. By choosing the right filter type and maintaining it regularly, you can enjoy cleaner, fresher air in your living spaces.
So, does closing your vents save energy? Our experts say no — it does not save energy, and you are better off keeping vents open.
If you get vent filters with too high of an MERV rating, they restrict airflow into your air handler and cause your HVAC system to work harder. This leads to more wear and tear and a higher chance of a breakdown. If you're worried about this and want clean air, consider a separate air filtration system.
In most cases, a MERV 11 air filter isn't too high for residential use. Generally speaking, anything under a MERV 13 air filter should provide very efficient air purification in a home without impacting airflow.
Pleated filters can restrict airflow slightly more than non-pleated ones, but they balance filtration and airflow. Choosing the right MERV rating (between 8 and 13) ensures your system gets proper airflow while still effectively filtering the air.