Ductless Mini Splits in Mount Pleasant, SC

Ductless Mini Split System Repair and Installation!

Duct-Free Heating and Cooling Systems

The result is higher utility bills and difficulty keeping the house comfortable, no matter how the thermostat is set. A well-designed, properly sealed ductless split system can make your home more comfortable, energy efficient, and safer. Contact us for a quote to seal your home's ducts and improve the performance of your heating and cooling systems.

Reach out to schedule ductless system installation or repair services with Dunes Heating and Air Conditioning, LLC.

Providing energy efficient single zone cooling systems
Installing floor mounted Mitsubishi ductless systems

Konnect Series Floor Mounted Heat Pumps Indoor Unit

Model Family: NTXFKS Purpose: Heat & Cool Zone Capability: Single Efficiency SEER: Up to 28.2 SEER Efficiency EER: N/A Efficiency HSPF: Up to 13 HSPF Matching Outdoor Unit: Single-Zone: NTXFKS Matching Outdoor Unit: Multi-Zone: NTXMMX – NTXMPH Energy Star Rated: ENERGY STAR® certified Refrigerant Type: R410A Number of Fan Speeds: 5 fan speeds Sound Level: Quiet Operation Wireless Remote: Yes Factory Warranty Parts: 10-year parts limited warranty to the original purchasing owner upon timely registration; one (1) year parts limited warranty without registration. Manufacturer’s Stated Benefits:

  • Available capacities in kBtu/h: 9, 12, 15, 18
  • 21.0–28.2 SEER
  • Rapid heating
  • Operates with 25% less power than other models
  • Recessing optional

Providing single zone ductless cooling solutions

ST Series Air Condition

Model Family: NTYWST Purpose: Cooling Zone Capability: Single & Multi-Zone Efficiency SEER: Up to 24.6 SEER Efficiency EER: N/A Efficiency HSPF: N/A Matching Outdoor Unit: Single-Zone: NTYSST Matching Outdoor Unit: Multi-Zone: N/A Energy Star Rated: ENERGY STAR® certified Refrigerant Type: R410A Number of Fan Speeds: 5 fan speeds Sound Level: As low as 19 dB(A) Wireless Remote: Yes Factory Warranty Parts: 10-year parts limited warranty to the original purchasing owner upon timely registration; one (1) year parts limited warranty without registration. Manufacturer’s Stated Benefits:

  • Available capacities in kBtu/h: 09, 12, 15, 18, 24, 30, 36
  • Smart Set
  • On/Off Timer
  • Auto Cooling/Heating Changeover
  • Auto Restart
  • Offers a wide vane for a wider angle of airflow, 150° from left to right
  • Motorized vertical vanes on GL24/D30/D36 models

Installing wall mounted Mitsubishi ductless mini split systems

T Series Wall-Mounted Heat Pumps

Model Family: NTXWST Purpose: Heat & Cool Zone Capability: Single & Multi-Zone Efficiency SEER: Up to 24.6 SEER Efficiency EER: N/A Efficiency HSPF: Up to 12.8 HSPF Matching Outdoor Unit: Single-Zone: NTXSST Matching Outdoor Unit: Multi-Zone: NTXMMX – NTXMPH Energy Star Rated: ENERGY STAR® certified Refrigerant Type: R410A Number of Fan Speeds: Vertical Air Swing Sound Level: Quiet Operation Wireless Remote: Yes Factory Warranty Parts: 10-year parts limited warranty to the original purchasing owner upon timely registration; one (1) year parts limited warranty without registration. Manufacturer’s Stated Benefits:

  • Available capacities in kBtu/h: 09, 12, 15, 18, 24, 30, 36
  • Smart Set
  • On/Off Timer
  • Auto Cooling/Heating Changeover
  • Auto Restart
  • Compatible with kumo cloud® control app and Thermostat Interface

Ductless Mini Split FAQ

A ductless mini split is a heating and cooling system that provides climate control without traditional ductwork. It consists of an outdoor compressor/condenser and one or more indoor air-handling units. These units deliver conditioned air directly into individual zones or rooms.

A ductless mini split is a heating and cooling system that provides climate control without traditional ductwork. It consists of an outdoor compressor/condenser and one or more indoor air-handling units. These units deliver conditioned air directly into individual zones or rooms.

Mini splits use refrigerant to transfer heat between the indoor unit(s) and the outdoor compressor. In cooling mode, they remove heat from inside and release it outside, and in heating mode, they extract heat from outdoor air and bring it indoors.

Ductless mini splits offer several advantages, including:

  • Energy efficiency: No energy loss due to leaky or poorly insulated ducts means lower utility bills.
  • Zoned comfort: You can set different temperatures in different rooms or zones.
  • Easy installation: They require only a small wall opening and minimal construction work.
  • Improved air quality: Without ducts, less dust and fewer allergens are circulating.
  • Quiet operation: Indoor units are designed to be low-noise, ideal for bedrooms or living spaces.
  • Versatility: Great for additions, garages, sunrooms, and spaces where traditional HVAC isn’t practical.

Most mini splits function as heat pumps, providing both heating and cooling from a single system. This makes them a year-round solution for indoor comfort.

Ductless systems can heat or cool whole homes using multiple indoor units connected to a single outdoor compressor. For larger homes, multiple units may be needed to ensure consistent comfort.

Costs depend on system size, number of zones, and installation complexity. While upfront installation costs are typically higher than for a window unit or portable AC, the long-term energy savings and comfort improvements often justify the investment.

Regular maintenance—like cleaning or replacing filters and annual check-ups by an HVAC professional—keeps the system efficient, prolongs lifespan, and maintains warranty requirements.

Some common considerations include:

  • Aesthetic impact: Indoor units are wall-mounted and visible.
  • Limited coverage per unit: Larger homes may need multiple indoor units.
  • Upfront cost: Installation costs can be higher than those of some traditional systems, but energy savings often offset them over time.

Choosing the right system depends on the size of your room(s), insulation levels, and how many zones you want. A professional assessment from the Dunes Heating and Air Conditioning, LLC team can help determine the ideal model and layout for your home or business.

What Lowcountry Locals Have to Say

Daniel Slack
The best! Prompt, educated, kind, considerate. Great company. Damien is always great.
Susan Harris
I highly recommend Nick and his crew with Dunes. Prompt, professional, and fair pricing. All of my prior experiences with my home and rental home, and Dunes left no question that I would use them for my new system installed today.
Paul Jessey
Damian was very polite, gave great information and detailed analysis, and seemed genuinely concerned about my HVAC units and their operational success. He is extremely knowledgeable and really knows his stuff. I highly recommend this company. It is a company of Integrity and Honesty.

Values We Stand Behind

Why Dunes Heating and Air Conditioning?

Trained and Certified Technicians
Trained and Certified Technicians
Licensed, Bonded, and Insured
Licensed, Bonded, and Insured
Financing & Specials Available
Financing & Specials Available
Available for Emergency Services
Available for Emergency Services
Honest and Upfront Pricing
Honest and Upfront Pricing
In Business Since 1998
In Business Since 1998

Reach out to schedule ductless system installation or repair services with Dunes Heating and Air Conditioning.

We serve Mount Pleasant residents as well as the surrounding communities.

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