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Children having Obsessive and Compulsive Disorder and therefore are having Behavioral Therapy are taught concerning how to deal and manage their obsessions and compulsions without performing some actions or rituals into it. Children may initially still find it hard to go away on their own recurring and persistent thoughts and actions but since the behavior therapy continues they eventually learn concerning how to manage their disorder. Behavior therapy also gives children the bravery and strength to address their symptoms. A tighter built home means less outside air infiltrating in the home, which means less oxygen to use for combustion within the furnace. As the furnace burns fuel and oxygen for combustion, it "eats up" surrounding air, which has to be "made up" with fresh air. If air cannot type in the home as easily anymore, this can cause serious issues. As the surrounding air is utilized for combustion, rather than substituted with oxygen, a negative pressure inside the space can happen. This could create combustion problems for the furnace, plus burn up fresh air for anybody inside the home.