For more information on topics discussed in Lesson 8, see these selected references:
Links
[1] http://www.eia.doe.gov/emeu/recs/recs2001/hc_pdf/spheat/hc3-1a_climate2001.pdf
[2] http://www.hometips.com/cs-protected/guides/forcedair.html
[3] http://www.bobvila.com/ArticleLibrary/Task/Building/ForcedAir.html
[4] http://www.hometips.com/images/hyhw/comfort/38.gif
[5] http://www.eere.energy.gov/consumerinfo/
[6] http://www.oru.com/energyandsafety/energyefficiency/homeheatingsystems.html