For first-time homeowners or others that are inexperienced with the heating and air conditioning functions provided in a house, there are some things to consider before diving into installations for brand-new heating and A/C equipment. Whether you’re looking to improve the heating or cooling systems for your home, you should first take a look at the insulation throughout the house. Much like a styrofoam cooler, the insulation in the walls and ceiling work to keep cool air inside the house in the summer, and hot air indoors during the winter. With poor insulation in a house, even a top of the line heating and air conditioning system will be hampered as the air leaks out of the house through the roof or cracks in the walls. That’s why insulation should be evaluated first, before even considering a new heating or cooling device. In that same vein comes the importance of knowing whether an attic fan is needed. Made to push hot air in the attic out of the house, attic fans can reduce heat stored inside a house considerably. However, having an attic fan is a fruitless endeavor if the house already has excellent insulation. Plus, attic fan usage can actually cause the cooled air to circulate out of the house faster if the insulation in the roof is poor. Really, an attic fan should only be considered if the insulation in the ceiling is solid, but the insulation in the roof itself needs work.