1. Heating systems
   • Gravity hot air furnace
     • Coal
     • Stoker coal
   • Forced air furnace
     • Gas fired
   • Coal
   • Electric
   • Heat pump
     • Air source
     • Ground source
   • Hot water
     • Gas fired boiler
     • Electrical boiler
   • Steam
     • Gas fired boiler
     • Oil fired boiler
       
       
2. Fireplaces
   • Parts - hearth, firebox, smoke shelf, damper, chimney
   • Types
     • Wood burning
     • Gas
       • Vented
       • Ventless
     • Combination
     • Electric
       
       
3. Ventilating systems
   • Attic ("whole-house") ventilation
   • Bathroom exhaust
   • Kitchen exhaust
   • Heat exchanger system
     
     
4. Air conditioning systems
   • Condensing unit
   • Line set
   • A-frame
   • Space Pac (high velocity, small duct)
     
     
5. Energy conservation
   • Tight house
     • Vapor retarders
     • Vapor retarder paint
     • Air tight drywall
       
   • Super insulated house
     • 2x6 studs
     • insulating sheathing
     • strapping
       
   • Energy Conservation Codes
     • Chicago
     • Suburbs (ICC)
       
   • Payback formulae
   • Cogeneration
     • gas
     • electric
       • PV
       • Wind
   • Ground source (Geothermal)
     
   • Ice making at night for cooling