We tend to spend more time indoors than we do outdoors. Subsequently, it is important to make sure the air we are breathing is as clean as possible and free of pollutants. Modern society is guilty of not airing out our houses and businesses as we used to. We are more inclined to run our HVAC systems instead of utilizing fresh air. At times, indoor air can be more polluted than outside air due to HVAC units recycling old air and because of what we track inside!First line of defense is using a vacuum with a HEPA filter and capable of really strong suction. This will prevent dust, dirt, pet dander and dust mites from being recirculated through the house via the HVAC system. Follow with mopping to capture what is left behind. Try to keep the humidity level in your house around the 30% rate. Mold and dust mites thrive in moisture, using a dehumidifier can keep both at bay. If you have allergy sufferers in your family this can really help them. Scented candles and plugins may smell nice, but a recent study showed that plugins can give off up to 20 different compounds and toxins. There have been few long-term studies done to research the true damage these petroleum based scented products can do to our health. A houseplant may not have the same smell of your favorite candle, but they act like a natural air purifier. Be sure to not allow cigarette smoking in your house. Secondhand smoke can cause cancer, asthma and respiratory issues. Clean your air filters. This is one of the most important things you can do for your HVAC system. It will make it work longer using less energy, and prevent dust, dander and mites from being released into your home. Be sure to change them minimally every 3 months. This allows your HVAC system to work for you better and assist in maintaining a high level of air quality.