HVAC Temperature and Humidity Guidelines in St. Charles, MO

The ideal temperatures and humidity levels for a healthy residential home can vary depending  on a number of factors, including geographic location, time of year, and personal preferences.  However, the following are general guidelines to consider in climates such as St.Charles, MO: 


During the winter months, it’s generally recommended to keep the thermostat set to between  68 and 72 degrees Fahrenheit (20-22 degrees Celsius) during the day when people are at home.  At night or when the house is empty, the temperature can be set a few degrees lower to save  on energy costs. It’s also a good idea to avoid setting the temperature too high, as this can lead  to dry air, higher energy bills, and increased wear and tear on your heating system in St Charles. 

During the summer, the ideal temperature is between 72 and 78 degrees Fahrenheit (22-26 degrees Celsius). It’s a good idea to use a programmable or Wi-Fi thermostat to adjust the temperature based on when people are at home, which can help save on energy costs. Consider using ceiling fans or other ventilation systems to help keep the air circulating and reduce the need for air conditioning. An air conditioner tune up in St Charles is also a great way to ensure your unit is working as it should be and not running up your energy costs.  


The ideal indoor humidity level is generally between 35% and 55%.  

During the winter months, when the air is typically drier, you may need to use a whole-house  humidifier to maintain the ideal humidity level. This can help to prevent issues such as dry skin,  respiratory problems, and static electricity. It’s essential to use a hygrometer to monitor the  humidity level, as too high levels can lead to mold growth and other issues. Both humidity levels, too low and humidity levels too high, can negatively impact your comfort.  

During the summer months, when the air is typically more humid, you may need to use a  dehumidifier in St Charles to maintain the ideal humidity level. This can help to prevent issues such as mold growth, musty odors, and respiratory problems. It’s important to clean and maintain your dehumidifier regularly to prevent the growth of bacteria and mold. New technology in high-efficiency air conditioning will also allow more control over your home’s humidity levels and  leave your home feeling as cool as the Swiss Air Alps.  

Overall, maintaining consistent temperature and humidity levels in your home is important for  your health and comfort. It can also help prevent mold growth, respiratory problems, and unwanted energy waste. If you’re unsure about your home’s ideal temperature and humidity levels, it’s a good idea to consult a qualified St Charles HVAC technician or expert for guidance. 

For anything heating and air conditioning, Stay Cool Climate Control would love to be your trusted comfort advisor in the St. Charles area! 

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