Three rooms, three temperatures, one system.
A homeowner in Wake Forest called us about three rooms the central system never quite handled, an upstairs bonus room that ran 8 degrees warmer than the rest of the house in July, a sunroom off the kitchen that was unusable in either July or January, and a finished space above the garage that the previous owner had given up on heating altogether.
Running new ducts wasn't practical, the framing path didn't exist, and a single new central system zone wouldn't have helped the sunroom anyway because of the glass load.
We measured each space, ran a Manual J load calc on each room individually, and quoted a three-head multi-zone Daikin mini split sized to the actual loads, not three identical heads that would have overshot some rooms and undershot others.
The install went in over two days. Each room now sits at its own setpoint. The sunroom is finally usable year-round, the bonus room actually matches the rest of the house in July, and the space above the garage is a working office now instead of storage.
That's why we measure each zone separately.
Mini splits only work when the sizing actually fits the room.
Anything else is a guess in expensive equipment.
