Mini-splits for the Palm Coast rooms the ductwork never reached

What a July FPL bill is usually saying

When a Palm Coast homeowner opens a July FPL bill that’s a hundred-odd dollars above last year’s, the house has usually changed, not the habits. The common culprit is a room that got added to the living space without being added to the system: a lanai enclosed with glass, a garage turned into an office, a bonus room nobody used until someone started working from home. That room runs a window unit or a portable AC, both of which are among the least efficient ways to cool anything, and the central system works overtime trying to condition a space it was never ducted to reach.

A mini-split gives that room its own efficient, quiet heat pump. The window unit goes to the curb, and the central system goes back to doing the job it was sized for.

Retrofit in a 1980s Woodlands ranch versus new construction in Sawmill Creek

Retrofit. In an ITT-era home in the Woodlands or Palm Harbor, the ductwork was squeezed into a low attic and the far bedroom has never cooled well. A ductless head in that room, fed by a small outdoor unit, fixes it without touching the attic. The same approach handles an enclosed lanai, a detached workshop, or a mother-in-law suite. We run the line set through an exterior wall or a soffit, so the job is usually done in a day.

New construction. Builders in Sawmill Creek, Town Center and the newer Seminole Woods streets sometimes design a house around ductless from the start, or combine a central system for the main floor with heads in the bonus room and primary suite. Tight new homes with low loads suit ductless well; the trick is not oversizing the heads.

Ductwork realities: why the garage conversion never cooled

Garage conversions across Quail Hollow and Lehigh Woods share a problem: someone tapped a supply run into the nearest duct and hoped. The result is a room that’s three degrees warmer than the rest of the house and a central system that now has one more register pulling from a blower that was already at its limit. The conversion also typically has no return, so the air that gets in has nowhere to go. A ductless head solves both: dedicated capacity, and nothing taken from the rest of the house.

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Sizing a mini-split for a Florida room

An enclosed lanai is the hardest room in a Palm Coast house to cool. Three walls of glass, a west exposure over the pool, a roof that was designed for shade rather than insulation. We size it from the glass area and orientation, not the square footage, and we size for humidity control first. A head that’s too big will cool the room in minutes and leave it damp; one sized right will run most of the afternoon at low speed and keep it dry. Ceiling cassettes and slim ducted units are options where a wall head doesn’t fit the room.

Where the heads and the condenser go

Indoor heads mount high on an exterior wall, with the condensate drained outside or to a small pump. Outdoor units sit on a wall bracket or a small pad, ideally shaded and away from the pool cage so the screen doesn’t trap their exhaust. Near the Intracoastal, the canals or anything east of the Hammock Dunes Bridge, we spec coated coils and keep the unit off the ground where salt spray settles. A surge protector goes on every outdoor unit, since the inverter boards that make mini-splits efficient are also the parts a Flagler County lightning storm likes to take out.