I was told by my Las Vegas AC system installation manager last week that it is normal that my new 3 ton two-stage Lennox 19 seer condenser will cycle on more frequently, and for less duration than the old replaced system did. It is paired with a variable speed blower. He said that my two-stage condenser unit may run more frequently for less time, but it will typically be at the lower speed, or first stage, 80% of the time. He said it should only be going to second stage(high speed) when it gets very hot outside (100+ degrees), or when the thermostat set-point has just been lowered a few degrees. He also says that at the lower fan speed/first stage, the unit is essentially operating at a lower tonnage equivalent, by almost half the 3 ton rating of the unit. He says that is why the manufacturers have no need for 1/2 tonnage condenser sizes with the high seer, two-stage units. Is this statement true?? Is my system still possibly oversized for 1,165sqft ya think? We have double pane glass, but minimal insulation elsewhere on our single level house. thanks.