What temperature should I keep my house to prevent mold?
Ava Mcdaniel
Updated on March 17, 2026
The ideal temperature is between 77 and 86 degrees Fahrenheit. During the summer months, temperatures are often higher than normal inside the home. Make an effort to keep temperatures inside the home lower during the summer months. Setting the thermostat to the low 70s makes it more difficult for mold to grow.
Can keeping your house cold cause mold?
Can mold grow in cold temperatures? The short answer is yes. Mold requires three things to grow: enough moisture, an adequate food source, and the right temperature.What temperature kills mold in house?
While most mold will grow and thrive in warm to hot temperatures, multiple studies suggest that extreme heat over 140 degrees Fahrenheit and 60 degrees celsius will kill mold on building materials as well as within food. As a matter of fact, extremely high heat can kill most biological contaminants in the home. Dr.What temperature will stop mold?
Set your thermostat to regulate the temperature and keep it around the low 70s. This will help prevent mold from growing, so you can enjoy your time away without worry.What temperature should you keep your house to prevent mold in winter?
Setting your thermostat to 78 degrees Fahrenheit helps you maintain energy efficiency while preventing moisture buildup. When you leave your house or go on vacation, don't set your thermostat above 80 degrees or turn it off completely, this can raise the temperature and humidity levels, putting you at risk for mold.Mold Removal: How To Prevent and Remove Mold at Home
Does turning AC off cause mold?
In addition to cooling down the home, ACs also remove humidity. If your air conditioner is not running for hours, your home can become extremely humid. This is bad for both home furnishings and the house itself. Mold and mildew are more likely to grow, and wood or paper can warp.Does mold prefer warm or cold?
Most types of mold prefer temperatures above 70°F, but some molds will tolerate lower temperatures. While room temperatures may be lower, appliances like dishwashers, dryers, and hot water heaters can generate enough heat to raise the temperature in small areas.How do I keep my house mold free?
To Prevent Mold Growth in Your Home
- Keep humidity levels in your home as low as you can—no higher than 50%–all day long. ...
- Be sure the air in your home flows freely. ...
- Fix any leaks in your home's roof, walls, or plumbing so mold does not have moisture to grow.
Does a dehumidifier keep mold away?
Reduce Mold and MildewA dehumidifier is designed to reduce the moisture level in the air by extracting the excess water. By doing so, dehumidifiers can help prevent the growth of mold and mildew and improves the indoor air quality of your space.
Does keeping AC on prevent mold?
Your air conditioner can control the temperature and humidity in your home, which can prevent mold growth. During the hot, humid summer months, set your air conditioner to between 68 and 72 degrees Fahrenheit. The relative humidity in your house should not exceed 50 percent.Is mold worse in summer or winter?
Mold grows faster in the summer months. However, winter doesn't always mean we are in the clear. Mold loves the dark spaces in our homes. Although it does not grow at temperatures below freezing, mold can survive in dormancy and await the coming spring.Does a heater help with mold?
Heaters aid in the removal of mold by drying out humid and otherwise moist surfaces. Since mold spores cannot germinate without moisture, heat can return the spores to a neutral and non-harmful state.How do you prevent mold in the winter?
How to Prevent Mold Growth
- Take cooler showers.
- Don't leave wet clothes and towels sitting in laundry baskets.
- Avoid laying fabric mats in areas often exposed to moisture, such as bathrooms and basements.
- Move houseplants to a well-ventilated area.
- Invest in a dehumidifier.