Why Does Heat Make You Cough? Insights from TrueTemp HVAC on Managing Indoor Air Quality

Have you ever noticed that you start coughing when it gets too hot? Whether it’s during the sweltering summer months or in a heated indoor environment during winter, heat can sometimes trigger coughing. At TrueTemp HVAC, we understand how crucial it is to maintain not only the temperature inside your home but also the quality of your indoor air. Here’s a closer look at why heat makes you cough and what you can do to alleviate this issue.

The Connection Between Heat and Coughing
  1. Dry Air: Heat often leads to dry indoor air, which can dehydrate the mucous membranes in your throat and respiratory tract. When these membranes dry out, they become irritated, leading to a dry, persistent cough. In heated homes during winter, this issue is especially prevalent due to central heating systems pulling moisture out of the air.
  2. Increased Airborne Irritants: High temperatures can exacerbate the presence of pollutants and allergens. Heat can increase the concentration of ozone, dust mites, and other allergens that irritate your respiratory system. Moreover, in urban areas, hot days can lead to higher levels of smog and air pollution, which are common irritants that can cause coughing.
  3. Air Conditioning and Poor Ventilation: While air conditioning is essential during hot weather, it can contribute to indoor air pollution if not properly maintained. Air conditioners that are dirty or have old filters can circulate dust, mold spores, and other particulates through your home, irritating your lungs and airways.
Tips to Prevent Heat-Induced Coughing

1. Maintain Optimal Humidity Levels: Using a humidifier can help add moisture back into the air, which is particularly helpful during winter when heating systems are in use. The ideal indoor humidity level should be between 30-50%. This balance helps keep your mucous membranes moist and less likely to become irritated.

2. Improve Indoor Air Quality: Regularly replace or clean the air filters in your HVAC system to ensure that you are not circulating dust and allergens throughout your home. Consider investing in a high-quality air purifier, especially if you live in areas prone to high pollution or if you have allergies.

3. Ensure Proper Ventilation: Good ventilation is crucial, particularly in the kitchen, bathrooms, and other high-moisture areas. Use exhaust fans to help circulate and expel stale air, and open windows when the outdoor air quality is good to allow fresh air to circulate.

4. Stay Hydrated: Drink plenty of fluids to stay hydrated. Keeping your throat moist can help alleviate the irritation that leads to coughing.

5. Use Ceiling Fans to Circulate Air: Ceiling fans can help circulate air within your home, preventing it from becoming too stagnant. This circulation helps to distribute the humidity more evenly and can reduce the temperature slightly without necessarily turning up the AC.

6. Regular HVAC Maintenance: Schedule regular maintenance checks with TrueTemp HVAC to ensure that your heating and cooling systems are not only functioning efficiently but are also not contributing to poor indoor air quality. Professional cleaning, routine inspections, and timely repairs can significantly improve the performance and cleanliness of your HVAC system.

TrueTemp HVAC’s Role in Your Comfort and Health

At TrueTemp HVAC, we believe that your comfort and health go hand in hand. By ensuring that your home’s heating and cooling systems are properly maintained, we can help you reduce the occurrence of heat-induced coughing. Our team of experienced technicians is ready to provide you with solutions tailored to your needs, from installing humidifiers and air purifiers to conducting thorough cleanings of your HVAC system.


Heat-induced coughing can be more than just an annoyance; it can be a sign that your indoor air quality needs improvement. By taking proactive steps to manage humidity, ensure clean air circulation, and maintain your HVAC system, you can enjoy a healthier, more comfortable home environment. Contact TrueTemp HVAC today to learn more about how we can help you breathe easier, no matter the season.