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Incidentally, drag race aficionados have a well-bred desire for the antiquities with their considerable curiosity about vintage and classic cars. Old fashioned and strange because they may seem on the outside of, these cars are highly esteemed for sturdy body built and fit streamlining which is way beyond some of our modern car?s durability in time of collisions and bumps. The popular programme, which has been running since 2011, and regularly draws audiences in excess of 4m, sees a team of home improvement experts led by Alan Titchmarsh transform properties for deserving families in difficult circumstances. 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.