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Pioneer system has an Auto mode (maybe they all do). Is there a downside to letting these units run in Auto mode to maintain a set point? The units are in my house, which is a well sealed, insulated concrete form build. The ICF build helps keep the house from rapidly change temperature, so I...

I'm going to move to mini splits, the question is: Do I do it now and use R410 units or wait until next year for the R454B units. Maybe some of you guys have seen performance numbers, etc. I know the new stuff is 'slightly' flammable, so there's that. I'm also willing to bet the new units...

Only reason is that the smallest mini is plenty for one room and a small room next door would probably be great for the duct take-off. Wondering how the cassettes perform compared to the wall units.

Considering a DiamondAir unit. The manual states that refrigerant capacities and condenser pre-charge are all based upon 25' of line set. They have a table for the extra R410a needed per length of extra line. Now, this unit is also offered with a 16' line set. The manual says nothing about...