- CF-6R-MECH – 02 – Solar Domestic Hot Water Systems (SDHW)
- CF-6R-MECH – 03 – Pool and Spa Heating Systems
- CF-6R-MECH – 04 – Space Conditioning Systems, Ducts, and Fans
- CF-6R-MECH – 05 – Indoor Air Quality and Mechanical Ventilation
- CF-6R-MECH – 06 – Evaporatively Cooled condensing Units
- CF-6R-MECH – 07 – Evaporative Coolers
- CF-6R-MECH – 08 – Ice Storage Air Conditioning (ISAC) Units