For more information on topics discussed in Lesson 5, see these selected references:
Links
[1] http://www.aceee.org/consumerguide/topfurn.htm
[2] http://www.eere.energy.gov/consumerinfo/factsheets/ea3.html
[3] http://www.eere.energy.gov/consumerinfo/factsheets/ed3.html
[4] http://www.eere.energy.gov/consumerinfo/factsheets/eb9.html
[5] http://www.eere.energy.gov/consumerinfo/factsheets/ec1.html
[6] http://www.naima.org/pages/resources/library/pdf/BI403.PDF
[7] http://www.naima.org/pages/resources/library/pdf/BI409.PDF
[8] http://www.eere.energy.gov/consumerinfo/energy_savers/insulation.html