Tips for Improving Airflow in Your Home

February 24, 2023

Source: Studio Romantic/

Airflow is one of the most overlooked aspects of home comfort and a healthy indoor environment. Poor airflow can lead to stuffy air, increased pollutants, and discomfort. Adequate airflow is essential for cooling a home efficiently, as stagnant air cannot redistribute heat. Signs of poor airflow include hot or cold spots in certain rooms or high energy bills because of inefficient cooling systems. Certain rooms in your home may be more prone to poor airflow, such as the bathroom or kitchen. Simple upgrades like switching to energy-efficient kitchen appliances can improve your home’s airflow by reducing the amount of smoke, moisture, and cooking odors in the air. Fortunately, there are several other ways to improve airflow and ventilation in your home. Achieve optimal airflow in your home with these handy tips.

Replace Outdated or Damaged HVAC Equipment

An outdated or damaged HVAC system can reduce airflow in your home and make it difficult to keep temperatures comfortable. To improve airflow, consider replacing your old equipment with a modern, energy-efficient solution like a MRCOOL DIY mini split system or a 2-zone mini split system. Mini split systems provide precise temperature control and allow you to heat and cool separate zones in your house, helping you reduce energy costs while enjoying superior air circulation. With a MRCOOL product, the refrigerant line is pre-loaded, so installation is simple and requires no ductwork, making it an ideal choice for DIYers.

Source: Serenethos/

Clean Air Ducts and Vents

Cleaning air ducts and vents is integral to maintaining proper airflow in your home. Air ducts and vents can become clogged with dust, debris, and other pollutants over time, obstructing airflow and leading to poor indoor air quality. Fluctuations in inside and outside temperatures can also cause condensation inside the ducts, leading to mold growth, which is detrimental to your health. Cleaning air ducts and vents can help improve the efficiency of your heating and cooling system, reduce energy costs, and create a more comfortable living environment.

To clean your air ducts and vents, start by turning off your HVAC system and removing any vent covers. Use a vacuum or brush to remove any dust, dirt, or debris from the interior of the ducts and vents. For a deeper clean, you can hire a professional air duct cleaning service that uses specialized equipment to thoroughly clean your ducts and vents. It is recommended to clean your air ducts and vents at least once a year, especially if you have allergies, pets, or live in a dusty area.

Using Ceiling Fans

Ceiling fans can also be a great way to improve the airflow in your home. By creating a breeze and circulating the air, ceiling fans can help keep rooms at a comfortable temperature and reduce your reliance on air conditioning systems. To get the most out of your ceiling fan, turn it on counterclockwise during warm weather so that air is pushed down from the ceiling. This creates an updraft and helps cool the room. In cold weather, switch the fan to clockwise so that it pulls air up toward the ceiling instead. This redistributes the warm air that rises, ensuring that every corner of the room stays warm.

Use Exhaust Fans in Bathrooms and Kitchen

Exhaust fans are a simple and effective solution for improving airflow in high-moisture areas such as bathrooms and kitchens. These fans help to remove excess moisture, odors, and pollutants from the air, preventing mold growth and improving indoor air quality.Choose an exhaust fan with the appropriate CFM (cubic feet per minute) rating for your room size. A general rule is to have one CFM for every square foot of space. This estimate is based on the fan completing approximately eight air changes per hour (ACH).

In addition to running the exhaust fan while showering or cooking, you also need to leave the fan operating for a short period afterward. The Home Ventilating Institute recommends leaving the exhaust fan in your bathroom running for around 20 minutes after your shower to ensure all moisture has been removed from the space.

Source: Deliris/

Open Doors and Windows

Opening doors and windows can help improve airflow through convection. However, it is best to use this method only when the weather is dry, and the pollen counts are low to avoid contaminating your home. Opening two windows across from each other can form a cross-breeze, allowing cool air to be pulled in while warm air is expelled. You can help regulate the temperature by using box fans mounted in opposite windows. Have one box fan facing into the room to draw in the fresh air and the other box fan facing outside to expel warm air. If possible, place the second fan in a higher window because hot air rises.

Remove Obstacles

Removing obstacles that block or restrict airflow is a simple and effective way to improve air circulation in your home. This can be as simple as rearranging furniture or removing clutter or as complex as removing a wall or installing new windows. Start by assessing the flow of air in each room, paying attention to areas where air seems to be blocked or stagnant. Moving furniture away from vents and windows can help to increase airflow and circulation. If you have heavy drapes or curtains, consider replacing them with lighter, sheer options that won't obstruct airflow.

Evaluate Your Attic Space

Evaluating your attic space can also help improve airflow in your home. Attic vents should be properly installed and maintained to ensure optimal air circulation throughout the home. If you need to replace your insulation, opt for a material with a high R-value that keeps cool air inside during warmer months and warm air in during colder months. Check if there are any air leaks in the attic and ensure they are adequately sealed to prevent further energy loss and reduce drafts. Proper attic ventilation helps with airflow and reduces the risk of moisture buildup, which can lead to mold growth and other costly repairs down the line.

Improve Your Indoor Air Quality

Maintaining quality indoor air is beneficial for your comfort and health. Taking proactive steps to install proper ventilation systems can help create a cleaner living space, so you can breathe easy knowing everyone in the house is breathing clean, high-quality air.


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