Heat loss in a home can be caused by a couple of different things. The first being poor insulation. You may not think to check on your insulation or even worry about it until winter weather comes around. It is possible that the insulation was not properly installed allowing heat to escape or that the quality of insulation is poor. Both problems create a likely way for heat to escape. Another way that heat can be lost in a home is through cracks and crevices that are not air sealed. While you might think the heat is only escaping from your unsealed windows or doors, there are many different places where heat can escape your home.