Among other energy saving recommendations, Florida Power and Light asks that its residential customers set thermostats two degrees higher (for AC) and leave the air handler fan on ON, not AUTO. I have no problem with doing that. However, FPL can't/hasn't given me a straight answer on the average/hypothetical/potential energy savings or possible benefit in avoiding surges in use.
Does anyone have an idea what, generally, the energy consumption trade-off might be for setting thermostat two degrees higher with fan on ON?
(3300 sf house is in south Florida, using AC nine months of the year, heat pump maybe three weeks a year. System is well-preforming, five-year-old SpacePak HV, one two-ton and one three-ton, retrofit in single-story flat-(insulated)roof, CBS house with large low-e impact windows, half of them on the southern elevation. Total average FPL bill is $200/month; judging from last three years' bills in no-AC/no-heat months, average energy cost to AC/heat is about $130 of that $200.)