""The house was so tight, you’d slam the door and the toilet would flush.” Have you ever heard anyone say that? How about hearing about someone getting Carbon Monoxide poisoning from a backdrafting heating system? Every decision we make in a house has an effect on the system as a whole and knowing how these systems interact can save a life, prevent a lawsuit, or get you the most bang for your buck in conservation upgrades. Paul Jackson and Steve Antonini will explain how the House as a System works. After that, Andrew Webster will discuss some of the pitfalls to guard against when that system has had a Deep Energy Retrofit applied."