Key takeaways:
- Stuffy indoor air is common during hot and humid Middle Tennessee summers.
- If running your AC doesn’t help, you may be dealing with an indoor air quality issue.
- Possible fixes include HVAC upgrades, ductwork cleaning, or installing an IAQ solution like a whole-home dehumidifier or whole-home air filtration product.
The thermostat says your house is cool, but your indoor air still feels heavy and humid. During hot Middle Tennessee summers, HVAC systems can struggle to remove indoor humidity, which can make your indoor air feel stuffy and hard to breathe.
However, persistent stuffiness could indicate an air quality issue in your home.
Read on to learn more about air quality, why your HVAC system alone might not be enough, and what your options are for better indoor air.
What Does Stuffy Air Feel Like?
Stuffy air feels warm and humid. You may also feel that the air is stagnant and notice unpleasant odors that don’t go away even when you run your AC.
Your indoor air can also contain small particles that make this sensation of stuffiness even more noticeable. Things like dust, pet dander, pollen, mold spores, and other allergens make your indoor air harder to breathe. When combined with humidity, these particles make your air feel heavy and uncomfortable.
Heavy and humid indoor air is unpleasant to breathe, but it can also become a problem for mold growth. Ideally, your indoor humidity should be somewhere between 30% and 50%. Anything above 60% can create ideal conditions for mold to grow and spread.
If your indoor air contains pollutants and allergens, you need to take steps to improve filtration to prevent long-term exposure to particles that could hurt your respiratory health.
Common Indoor Air Quality Issues During Middle Tennessee Summers
What causes your indoor air to feel stuffy even when the AC is running? There can be different causes:
- Your home is not sealed well. Hot, humid outdoor air can get into your home through small gaps around doors and windows. It can also enter through your attic, crawl space, and other areas that are not properly sealed.
- There is too much moisture inside your home. A slow plumbing leak, water damage, or moisture buildup in areas like bathrooms and basements can increase indoor humidity and make the air feel heavier.
- Your ductwork is dirty. Over time, ducts can collect dust, pet dander, pollen, and other particles. When your AC runs, these particles circulate through your home and contribute to stuffy indoor air. This is often more noticeable in older homes or homes that have not had duct cleaning in a while.
- Your ductwork is damaged or leaking. Leaky ducts can pull warm, humid, and unconditioned air into your HVAC system. This makes it harder for your AC to keep up and introduces more moisture and pollutants into your indoor air.
- There is mold growth somewhere in your home. Mold can grow in damp areas with poor airflow, including bathrooms, basements, crawl spaces, attics, and around hidden leaks. As mold grows, it releases spores that can affect your indoor air quality.
- Your HVAC system is not filtering air effectively. A dirty air filter, the wrong type of filter, or an HVAC system with airflow problems may allow more dust, pollen, pet dander, and other particles to stay in the air. Middle Tennessee has a long pollen season, and homes near busy roads may also be exposed to more outdoor pollutants.
How to Improve Your Indoor Air Quality
There are different options for making your home feel less stuffy and improving indoor air quality during the summer.
Change Your AC Filter
A dirty air filter can restrict airflow and allow more dust, pollen, pet dander, and other particles to circulate through your home. Replacing the filter regularly is one of the simplest ways to support better indoor air.
Try a Higher-MERV Filter
If you’re dealing with stuffy indoor air, you can try using an HVAC filter with a higher MERV rating. However, you should know that high-MERV filters can reduce airflow and make your AC work harder. Ask an HVAC technician for a recommendation before swapping your filter.
Schedule an HVAC Tune-Up
Routine maintenance can catch issues with airflow, filtration, coils, drainage, and ductwork. Your HVAC technician can also recommend solutions based on your home’s humidity levels and air quality concerns.
Get Your Ductwork Cleaned
Middle TN HVAC companies can use specialized equipment to remove buildup inside your air ducts. This can help reduce the dust, pet dander, pollen, and other particles that may circulate through your indoor air.
Have Damaged Ductwork Fixed
Small gaps, holes, and disconnected ducts can pull hot, humid, unfiltered air into your HVAC system. An HVAC professional can inspect your ductwork and seal or repair problem areas.
Install a Whole-Home Dehumidifier
If your indoor air is too humid, a whole-home dehumidifier can work alongside your AC system to remove excess moisture. This can make your home feel more comfortable while helping you maintain healthier indoor humidity levels.
Add Whole-Home Air Filtration
A whole-home air filtration system can capture more airborne particles than a standard HVAC filter alone. This may be a good option for homes with pets, allergies, frequent dust buildup, or ongoing indoor air quality concerns.
Improve Your Indoor Air Quality With Airstream Services HVAC, Electrical & Plumbing
As a local HVAC company, Airstream Services HVAC, Electrical & Plumbing offers indoor air quality solutions uniquely adapted to the air quality issues that are most common in Middle Tennessee.
If you’re dealing with stuffy and humid indoor air, we can help diagnose where the issue is coming from and recommend HVAC fixes or look into whole-home dehumidifiers and filtration systems.
Give us a call at 616-216-5979 or book your service online if you need help with your indoor air quality.
FAQ
Why does my house feel stuffy even when the AC is running?
Your AC may be cooling the air without removing enough humidity. Stuffy air can also be caused by a dirty filter, poor airflow, leaky ductwork, dirty ducts, indoor moisture, or an air quality issue such as dust, pollen, pet dander, or mold spores.
What’s a good humidity level inside my house in the summer?
Indoor humidity should ideally stay between 30% and 50%. If humidity gets above 60%, your home may feel clammy and uncomfortable, and excess moisture can create conditions that allow mold to grow.
Will a higher-MERV filter improve indoor air quality?
A higher-MERV filter can capture smaller particles, including some dust, pollen, and allergens. However, some high-MERV filters can restrict airflow if they are not compatible with your system. Ask an HVAC technician which filter is best for your home and equipment.
Can leaky ducts make my home humid?
Yes, damaged or disconnected ducts can pull warm air and humidity from attics, crawl spaces, and other unconditioned areas into your HVAC system. This can make rooms feel stuffy and force your AC to work harder.
Do I need a whole-home dehumidifier?
A whole-home dehumidifier may be a good option if your home stays humid even when your AC is working properly. It works with your HVAC system to remove excess moisture and can help make your home feel cooler and more comfortable.
