As much as half of the energy used in the average home goes to heating and cooling, so making smart decisions about your HVAC systems can have a measureable effect on both your comfort and utility bills. To increase the efficiency of your heating or air conditioning system, consider the following tips:

Annual tune-up
Just like a car, your HVAC system needs to be professionally maintained at least once a year in order to operate as efficiently as possible. Have an HVAC contractor conduct a maintenance test before the peak heating and cooling seasons begin. If you don’t know which elements to address, Energy Star’s website has a “HVAC Maintenance Checklist” that offers many useful suggestions. Read more

By Matt Solis, Senior Editor

The best way to prevent mold growth is to keep all materials in your home as clean and dry as possible. Make sure your house is well ventilated with a relative humidity between 30 and 50 percent. To reduce indoor humidity, vent bathrooms, dryers and other moisture-generating sources to the outside; use air conditioners and dehumidifiers; increase ventilation; and use exhaust fans whenever cooking, dishwashing or cleaning. To further protect your home from mold growth, consider the following tips:

• Standing water sources promote mold and bacterial growth, so it’s important to cover sump pumps, enclose fish tanks and ensure basement drains (for air conditioning hoses,

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