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Ductless Mini-Split Heat Pumps in North Myrtle Beach
Almost every house has one room that never feels right. It's the bonus room over the garage that's ten degrees hotter than downstairs, the sunroom you can't sit in on an August afternoon, the converted garage or the addition the original system was never sized for. A ductless mini-split heat pump heats and cools that space on its own, with its own thermostat and no ductwork to build. Coastline installs, repairs and services mini-splits throughout North Myrtle Beach, Little River and the Brunswick County beach towns.
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How a Ductless Mini-Split Works
A mini-split is a heat pump, just like the one beside your house, only smaller and without ducts. A compact outdoor unit connects to one or more indoor units, usually called heads, mounted high on a wall or in the ceiling. Instead of pushing air through ducts, each head heats or cools the room it's in directly. The connection between inside and outside is a small bundle of two copper refrigerant lines, a power cable and a drain line, which passes through a hole about three inches across. That's why a mini-split can go into a finished room with very little mess.
Most mini-splits use inverter compressors, which means they speed up and slow down to match the room instead of switching fully on and off. They run quietly, hold the temperature steady and use less electricity than a window unit or space heater doing the same job.
Single-Zone and Multi-Zone Systems
Each indoor head is sized for the room it serves, and that sizing matters just as much as it does on a central system. Heads commonly come in sizes like 9,000 and 12,000 BTUs, with larger ones for big open rooms. A head that's too big for a small bedroom will short-cycle and leave the room clammy; one that's too small will run all day in August and never catch up. We size each head to the room's square footage, windows, sun exposure and how it's used.
Single-Zone
One outdoor unit paired with one indoor head. This is the usual choice for a single problem room like a bonus room, garage or sunroom.
Multi-Zone
One outdoor unit running two or more indoor heads, each with its own temperature control. Multi-zone systems work well for several rooms that need help, or for a whole house that has no ductwork.
Indoor Unit Styles
Wall-mounted heads are the most common and the most affordable. If you'd rather not see the equipment, ceiling cassettes sit flush in the ceiling, and slim ducted units hide in a closet or attic and feed a room through short duct runs.
Where the Water Goes
Every indoor head pulls moisture out of the air, and that water needs to drain. On an outside wall, it usually drains by gravity. On an interior wall, a small condensate pump carries it away. Planning the drain is one of the details that separates a clean installation from a stained wall a year later.
Where Mini-Splits Make Sense
Rooms the Main System Can't Reach
Bonus Rooms and Additions
Rooms over garages usually sit at the very end of the longest duct run, under a hot roof, with the least airflow in the house. Adding a mini-split fixes the room without making your main system work harder.
Garages, Workshops and Sunrooms
Spaces that were never meant to be heated and cooled, like a garage workshop, a golf cart garage or a sunroom with walls of glass, can be comfortable year-round. Sunrooms in particular need careful sizing because of how much heat pours in through the glass.
A golf cart garage or workshop is a good example of why mini-splits work so well here. You can cool it when you're out there working and turn it back when you're not, without changing the temperature anywhere else in the house.
Homes Without Ductwork
Some older beach cottages and homes with wall units or baseboard heat have no ductwork at all. A multi-zone mini-split can heat and cool the whole house without tearing into walls and ceilings to add ducts.
When a Mini-Split Isn't the Best Fit
A house with lots of small, closed-off rooms may need so many heads that a central system makes more sense. We'll tell you plainly which way gets you more comfort for the money.
Keeping a Mini-Split Running Well
Mini-splits are low-maintenance, but not no-maintenance. Each indoor head has a washable filter that should be rinsed regularly, more often in homes with pets. Over time, the indoor coil and the blower wheel inside the head can collect dust and mildew, especially in our humidity, which leads to musty smells and weaker airflow; that calls for a professional deep cleaning. Outdoors, keep plants and debris clear of the unit so it can breathe. Our maintenance plans cover mini-splits along with central systems. For everything else we do as North Myrtle Beach heat pump specialists, start on our home page.
A few settings help too. Using the remote's "auto" fan speed lets the unit balance comfort and humidity on its own, and on muggy days the "dry" mode focuses on pulling moisture out of the room. If the indoor unit starts dripping water down the wall, turn it off and call; that usually means the drain line or condensate pump needs attention.
Mini-Split Questions
Can a mini-split heat as well as cool?
Yes. A mini-split is a heat pump, so it heats in winter and cools in summer. Many also have a "dry" mode that focuses on removing humidity.
Do you repair mini-splits you didn't install?
Yes. We diagnose and repair mini-splits from the major brands, including drain problems, sensor and board faults, and refrigerant leaks. Error codes on the indoor unit's display often point us in the right direction, so let us know what it shows when you call.
Can a mini-split replace my central system?
In some homes, a multi-zone system can. In others, a central heat pump is the better choice. We'll look at your layout and tell you honestly.
Heat pump, AC and heating repair for North Myrtle Beach, Little River, Calabash and the north end of the Grand Strand. Licensed in South Carolina and North Carolina.
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