Ductless Mini-Splits

Ductless Mini-Split Services in Durham

Hourly-Paid, NATE-Certified Technicians. Honest Mini-Split Advice Since Day One.

If your home doesn’t have existing ductwork, or if you want efficient, targeted comfort in a specific area, a ductless mini-split system may be exactly what you need. These systems deliver powerful heating and cooling without the cost or disruption of installing traditional ductwork, making them a popular choice for Durham homeowners looking to expand or upgrade their comfort setup.

At CWJ Heating & Air Conditioning, we’ve been matching Durham families with the right HVAC equipment for over 50 years. Our technicians are hourly-paid, not commission-based, which means our recommendations reflect what your home actually needs rather than what earns the highest ticket. Senior technicians are NATE-certified, and we offer free estimates for mini-split installation so you can make an informed decision before committing to anything.

Because Durham homes range from historic houses with no existing ductwork to newer additions and finished attics, we take time to understand how you actually use each room before recommending a system. We consider sun exposure, insulation levels, and occupancy patterns so the new system is sized correctly and placed where it can deliver even, reliable comfort. That tailored approach can help you avoid hot and cold spots while keeping energy use under control.

Interested in a ductless mini-split for your Durham County home? Call CWJ Heating & Air Conditioning at (919) 296-4999 or contact us online to request your free estimate today!

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Our Ductless Mini-Split Installation Process in Durham

We know that having someone work in your home is a big deal, which is why we treat every installation as if it were for our own family. The process starts with a thorough assessment of your space. We’ll evaluate the layout, any existing system you may have, and your specific comfort goals to determine the right size and configuration. Getting this step right is the difference between a system that can perform well for years and one that underdelivers from day one.

Planning & Pre-Installation Review

During the planning visit, we also work through practical details that matter in Durham homes: where to place the outdoor unit so it has proper clearance, drainage, and future service access without conflicting with local setback or noise requirements. We review your electrical panel to confirm it can support the additional load and outline any upgrades needed before installation starts. Resolving these details in advance keeps the job on track and reduces the chance of surprises on installation day.

Installation, Testing, & Walkthrough

Once we’ve identified the right solution, our installation team gets to work. We handle everything from mounting the indoor and outdoor units to running the refrigerant lines and making all necessary electrical connections. Refrigerant lines and wiring are routed through small wall penetrations to keep runs discreet and surfaces protected. Before we leave, we pressure test, evacuate, and charge the system, then walk you through the controls, modes, fan speeds, timers, and zone management so you can use it confidently from day one. We’re familiar with local code requirements, so you can count on a clean, compliant installation.

Our mini-split installation steps typically include:

  • In-home consultation and sizing. We measure rooms, review insulation, and discuss how you use the space so we can recommend the right capacity and layout.
  • Indoor unit placement planning. We determine wall or ceiling locations that support good airflow while fitting the way your furniture and windows are arranged.
  • Outdoor unit siting. We choose a level, well-drained location that meets Durham and North Carolina code requirements and allows for future service access.
  • Line-set and electrical routing. We run refrigerant lines and wiring through small wall penetrations, protecting surfaces and keeping runs as discreet as possible.
  • System startup and walkthrough. We pressure test, evacuate, and charge the system as needed, then show you how to use the controls, modes, fan speeds, timers, zone management, and maintenance features.

To make the process easier on your household, we protect floors and furnishings, coordinate any temporary power shutoffs with you in advance, and clean up our work areas before we leave.

Where Ductless Mini-Splits Work Best in Durham Homes

Ductless systems are especially useful when you need to make a hard-to-condition space more comfortable without a major renovation. In Durham, we commonly install them in finished attics, sunrooms, garage apartments, and additions that were never tied into the original ductwork. Because each indoor unit has its own controls, you can keep these areas comfortable when they’re in use without overheating or overcooling the rest of the home.

Older homes in Durham and nearby communities like Chapel Hill and Hillsborough are also strong candidates for ductless equipment, particularly when adding new ductwork would disturb plaster, trim, or other original features. A ductless system can let you improve comfort and efficiency while keeping the character of the house intact. We plan line-set routes and unit placement to blend in as much as possible so the finished result suits the way your home looks and functions.

Mini-splits can also pair well with an existing central system when there’s one problem area that never feels right, such as a room over the garage or a home office that picks up heavy afternoon sun. Rather than oversizing a replacement furnace or air conditioner to handle that one space, a targeted ductless unit can manage the load where you need it most. That kind of focused solution can deliver better comfort with less energy use, especially during the hottest and coldest stretches of the year.

Don’t Miss Out on These Savings!

  • $300 Planned Service Contracts

    Flat low rate for 2 service trips per year for up to (2) systems per home. Price includes tax.

  • 15% OFF Whole-House Dehumidifier

    Get 15% off a whole-house dehumidifier system. Equipment only.

  • 10% OFF On Demand Services

    HVAC broken? Get 10% off the service call labor.

  • FREE Merv Media Filter

    Get a free Merv Media Cabinet & Filter ($225 value) with the purchase of system.

  • $35 OFF Any Smart Stat

    Get a Nest, Ecobee, Honeywell, or any Smart Stat of your choice for $35 Off.

  • $100 OFF Any New System

    Get $100 off the equipment for a completely new HVAC system that is purchased and installed by CWJ Heating & Air.

Areas We Serve

CWJ Heating & Air Conditioning is proud to serve Durham, North Carolina and other surrounding areas

  • Apex
  • Carrboro
  • Cary
  • Chapel Hill
  • Durham
  • Morrisville
  • Orange County
  • Raleigh
  • Wake Forest

Getting the Most Out of Your Mini-Split System

A well-installed mini-split is just the beginning. Keeping it running at its best over the long haul takes a little know-how and regular attention.

Durham’s seasonal swings from humid summers to cool, damp winters mean your mini-split may see use year-round, so small habits can have a meaningful impact on comfort and energy costs. Keeping interior doors open when conditioning multiple rooms, closing blinds on hot afternoons, and not blocking indoor units with tall furniture all help the system move air the way it was designed to. When we commission a new system, we walk through these room-by-room details with you so your daily routines support the equipment instead of working against it.

Ongoing mini-split care includes:

  • Regular filter cleaning. Filters should be cleaned every few weeks during periods of heavy use. Dirty filters restrict airflow, reduce efficiency, and put unnecessary strain on the system over time.
  • Professional maintenance. Regular tune-ups from a trained technician keep refrigerant levels balanced, electrical connections tight, and the system running efficiently.
  • Thermostat and zoning strategy. Mini-splits perform best when used intentionally. Setting temperatures by zone and avoiding unnecessary cycling helps maximize both comfort and energy savings.
  • Prompt attention to warning signs. Unusual noises, reduced airflow, or inconsistent temperatures are early indicators that something may need attention. Catching small issues early can save time and money.

With the right habits and a reliable service partner, a ductless mini-split can deliver efficient, consistent comfort for 15 to 20 years or more. Our maintenance plan covers two service visits per year for up to two systems at a flat rate of $300, and our team is available for repair and support throughout the life of the system.

Frequently Asked Questions

How Long Does Ductless Mini-Split Installation Usually Take?

Most single-zone projects can be completed in a day once any needed electrical work and planning are finished. Multi-zone systems may take an extra day or two depending on how many indoor units you’re adding and how complex the line-set routes are. Before work starts, we walk you through the expected schedule, including when we’ll arrive, when we plan to finish, and how long any temporary power interruptions might last.

Will a Ductless System Work During Hot Durham Summers and Cool Winters?

Modern ductless equipment is designed to handle a wide range of outdoor temperatures, making it a practical year-round option for the Triangle’s humid summers and chilly winters. We select models and sizes based on local design temperatures and your home’s insulation so the system has enough capacity without being oversized. In some cases, we may recommend keeping an existing heating system as a backup for the coldest nights, and we’ll explain that option clearly if it applies to your home.

Do Mini-Splits Require a Lot of Changes to My Home?

Compared to installing new ductwork, ductless systems involve minimal disruption. Refrigerant lines are routed through small wall openings, and we plan equipment locations so indoor units are mounted on appropriate walls, have access to power, and don’t interfere with doors or windows. For outdoor units, we choose locations that respect Durham building and electrical codes while preserving space for landscaping and walkways. We review all of these plans with you before any work begins.

For mini-split installations, replacements, maintenance, or repairs, CWJ Heating & Air Conditioning is Durham’s dependable choice. Call us at (919) 296-4999 to request same-day or emergency services!

Hear From Our Happy Customers

At CWJ Heating & Air Conditioning, your satisfaction is our priority! See for yourself what people have to say about working with us.

    “5-star company!”
    “Excellent people very technical group of people.”
    - Kurt Y.
    “We are so grateful to have heat again!”
    “Brett was responsive and courteous. Jairo was respectful, prompt, understanding and knowledgeable.”
    - Louisa L.
    “Christian was polite and helpful.”
    “He explained everything well. He arrived during the scheduled time.”
    - Tonya
    “I would definitely recommend CWJ to my friends.”
    “Same day service when my heat first went out - on a Saturday - which ultimately got replaced.”
    - Judy S.

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  • 50+ Years of Proven Experience

    Serving the Durham area since 1974, CWJ brings decades of hands-on knowledge and a track record customers can count on.

  • Honest, No-Pressure Service

    You’ll never get a sales pitch—just straightforward recommendations focused on what’s best for your home.

  • Family Owned & Operated Since 1974
    Locally owned and operated since 1974, this HVAC company has never sold out—and doesn’t plan to.
  • Trained Pros Who Do It Right

    Ongoing training and a commitment to quality. Every job is done carefully, professionally, and built to last.