Frostline installs and services ductless mini-split AC across coastal Palm Beach County. Mini-splits cool rooms a central system can't reach, with no ductwork, and they're sized to pull Florida humidity. We put in single-zone and multi-zone systems, and we repair them too. A mini split gives a room its own thermostat without adding ducts. A single head often covers the part of the home central air never reached.
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A mini-split cools a space without ductwork, on its own thermostat. These are the spots where it's usually the right call. Mini split systems suit rooms that were never on the original plan. Running HVAC ducting out to a garage rarely pays back.
When you add a room, central AC often can't keep up, and extending ductwork gets expensive. A mini-split conditions the new space on its own, with its own thermostat. Extending the duct run to one room is usually the more expensive answer. Two mini split heads cost less than reworking the HVAC layout.
Garages and sunrooms run hot and usually aren't on the central system. A single-zone mini-split makes them usable year round and pulls the humidity these rooms collect. Garages hold heat all day. Units rated for the room's BTU load handle it, and the heating side covers the few cold mornings we get.
Older homes without ducts are hard to cool evenly. A mini-split, or a multi-zone system, cools the house without the cost of adding ducts or a full central AC installation. Older homes without ducts are where mini split systems earn their keep. One outdoor unit can carry several indoor heads across the home.
If one bedroom or office never cools like the rest of the house, a mini-split fixes just that room, on its own control, instead of oversizing the whole system. One warm bedroom rarely justifies resizing the whole HVAC system. A single indoor head fixes it for a fraction of that.
Window units are loud, block the view, and leak air around the frame. A wall-mounted mini-split is quieter, more efficient, and seals the opening for good. Window air conditioners are the thing most people replace. Modern units are quieter, more efficient, and do not block the glass.
We handle the whole job, from sizing the system to the final startup, so it runs efficiently and quietly from day one. That covers sizing, mounting, the line set, and startup. HVAC work on a mini split is finer than on a central system, and the heating side is set up at the same visit.
Bigger is the most common mini-split mistake here. An oversized head cools the room fast, then shuts off before it pulls any humidity, so the space feels cold and clammy. We size the unit to the room and bump it up for Florida heat, so it runs in long, low cycles that actually dehumidify. Capacity is chosen from the room's heat load, not its floor area. Getting the BTU figure right is what makes the difference in this climate.
A single-zone system pairs one outdoor unit with one indoor head, ideal for a single room or addition. A multi-zone system runs several heads off one outdoor unit, which keeps the side yard clear when you're cooling a whole house. We help you pick the setup, and we install and service all the major ductless brands. Multi-head setups keep the yard clear. We size each indoor head to its own room so the split systems run in balance rather than fighting each other.
The indoor head and the outdoor unit connect through a small refrigerant line set, a control wire, and a condensate drain, run through one neat wall penetration. We keep the line set as short as the layout allows, since long runs cost efficiency, and we seal and secure everything so it holds up to coastal weather. Shorter line sets keep the units efficient. Coastal mounting hardware matters more here than the badge on the box.
We don't just install mini-splits, we fix them. Low refrigerant, a head that won't start, weak airflow, water dripping from the indoor unit, or a blinking error code on the remote, we find it and repair it. Regular AC maintenance keeps the filters and coil clean so the system holds its efficiency. Repair work on mini-split systems is its own skill. HVAC technicians who only handle central air often will not touch them.
Mini-splits run on inverter compressors that ramp up and down instead of slamming on and off, which is why they sip power and control humidity so well. Most have a dry mode that pulls moisture without overcooling, which is ideal for Florida's spring and fall. We set it all up and show you how to run it. Inverter units hold a steady output rather than cycling hard. That is why humidity control beats anything window air conditioners manage.
Our Process
We come out, look at the space, and size the system. You get a written quote with the layout, the zones, and the price. The visit takes under an hour. You get the BTU sizing and the indoor head positions in writing.
We match the right size and number of zones to your home and budget. You see the equipment, the efficiency rating, and the cost before anything is ordered. Capacity, efficiency and head placement all get settled before anything is ordered. Smart controls are optional on most units.
We mount the indoor heads, set the outdoor unit, run the line set, and make the electrical connections. Most single-zone installs are done in a day. Most single-head jobs finish inside a day. Multi-head mini-split work runs into a second.
We pull a vacuum on the lines, charge the system, test each zone, and walk you through the remote and the warranty before we leave. We test each indoor head before leaving and show you the remote. The heating mode gets checked at the same time.
Ductless mini-splits are part of what Frostline does as an AC specialist. The technicians install and service mini-split and central systems every day. Mini-split systems and central HVAC both come off the same van. The technicians work on both every week.
We size every mini-split to the room and to Florida's humidity, install single-zone and multi-zone systems, and handle the permit. Technicians are licensed, insured, and bonded, and the work is backed by a warranty. Sizing to the home rather than the brochure is the part that matters. Units chosen that way hold the humidity down.
Frostline installs and repairs ductless mini-splits across Delray Beach and coastal Palm Beach County, where salt air and humidity are hard on equipment. If your whole house needs cooling instead, we also handle central AC installation and service.
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We diagnose before we quote, at no cost. That covers mini-split work as well.
Sized to the room and Florida's humidity. Units are sized to the room, not to the house.
Most single-zone installs done in a day. Multi-head HVAC work takes longer.
Diagnosis before any quote. No upsells. Efficient equipment still needs the correct capacity.
Answers to the questions homeowners ask most before a ductless mini-split install. These come up on most mini-split enquiries.
It depends on a few things: single-zone versus multi-zone, how many indoor heads, the size and efficiency of the equipment, and how far the line set has to run. One head in a single room is the low end; a multi-zone system for a whole house is more. We give you a written quote after we see the space, with no upsells. Head count drives most of it. Two indoor units cost less than four, and the BTU rating moves the number as well.
A single-zone system cools one room or space with one indoor head. A multi-zone runs several heads off one outdoor unit, which is the move for a whole house or a few rooms, and it keeps you from crowding the yard with multiple condensers. We help you decide based on the rooms you want to cool and your outdoor space. Multi-head split systems suit a whole home; a single head suits one room. Both use the same indoor hardware.
Yes, and they handle humidity better than most central systems, as long as they're sized right. Their inverter compressors run in long, steady cycles that wring out moisture, and most have a dry mode that pulls humidity without overcooling. The catch is sizing: an oversized unit short-cycles and never dehumidifies, which is why we size up for Florida heat instead of guessing. Sizing decides whether the humidity control works at all. Air conditioners chosen too large never run long enough to dry the air.
DIY kits exist, but a permitted install is not a DIY job in Florida. It needs an electrical hookup, refrigerant handling that, under EPA rules, requires a licensed tech, and a permit and inspection. A DIY or unpermitted install also voids most manufacturer warranties. We handle the permit, the install, and the inspection, so it's all covered. Permits and refrigerant handling are the two parts a homeowner cannot do. HVAC licensing exists for the second one.
Two honest ones. The indoor head is visible on the wall, so it's not hidden like a vent, though the units are slim and quiet. And the upfront cost per room can run higher than a window unit. For most homeowners the efficiency, the quiet, and the room-by-room control more than make up for it over the life of the system. The indoor head is visible, which is the honest trade. Efficient running is what people notice after the first bill.
Most ductless mini-splits are heat pumps, so they cool in summer and heat on Florida's cold snaps, all from the same unit. They're efficient at the mild temperatures we get here, which makes them a good fit for a room the central system leaves chilly in January. Heating from a heat pump head is enough for a Florida January. Most units here spend the year cooling and a couple of weeks heating.
Both. We install new ductless systems and we service and repair existing ones, no matter who put them in. Low refrigerant, a head that won't start, weak airflow, water dripping inside, or an error code on the remote, the same team that handles our AC repair works on ductless systems too. We service mini-split systems we did not put in. The same team covers central HVAC.