You're turning your garage into a usable room.
A home office, gym, or workshop needs more than a fan in August. A mini-split gives that space dedicated heating and cooling without extending your home's ductwork.
When One Room Has Other Plans
You can have a perfectly good air conditioner and still have one room that refuses to cool down. Maybe the garage became a home office, the patio is now a sunroom, or that bonus room upstairs has always been too hot. The problem isn't necessarily your AC. It's that the ductwork was never designed to handle that extra space.
That's where CityLine Air Conditioning can help. Instead of extending ductwork and potentially affecting airflow elsewhere, we can install a ductless mini-split to heat and cool that room independently. An indoor unit connects to outdoor equipment through refrigerant lines, giving the space its own temperature control without changing how the rest of your home is cooled.
- 1 outdoor unitcan support multiple indoor heads, giving several rooms independent heating and cooling without extending your existing ductwork.
- 2-in-1 Comfortheating and air conditioning from the same system, so your new space stays comfortable through North Texas summers and winters.
- 0 New Duct Runsneeded for a ductless installation. Refrigerant lines connect the indoor and outdoor equipment without adding bulky ductwork.
- $0 Installation Estimateto discuss system sizing, equipment options, and unit placement before you decide to move forward.
When Should You Install a Ductless Mini-Split?
Not every room needs to be connected to your central air conditioning. Sometimes, giving a space its own heating and cooling system makes more sense. Here are six situations where installing a ductless mini-split is worth considering.
Your upstairs bonus room never feels comfortable.
If the rest of the house cools nicely but one room stays hot, a mini-split can handle that space independently. No need to keep lowering the thermostat downstairs.
You're building a sunroom or enclosed patio.
These spaces often have large windows and very different heating and cooling needs. A properly sized mini-split can make the room comfortable without adding demand to your central system.
You're tired of window AC units and space heaters.
If you're switching between the two every season, a ductless heat pump can handle both jobs. You'll also get more precise temperature control without a window unit taking up space.
You're adding bedrooms or living space.
Whether it's a home extension or a finished attic, new square footage needs its own heating and cooling plan. Installing a mini-split can avoid major changes to existing ductwork.
You want different temperatures in different rooms.
Maybe someone likes a cooler bedroom while another prefers a warmer office. A multi-zone mini-split system gives individual rooms their own temperature settings without making everyone compromise.
Not sure whether ductless is the right fit? If the entire house needs better cooling, compare your options for AC installation and replacement. If you already own a mini-split that's having trouble, ductless mini-split repair may be all you need. HVAC financing is also available to explore for a new installation.
What Does Mini-Split Installation Cost in DFW?
Mini-split installation costs depend on how many rooms you're conditioning, the equipment you choose, and where everything goes. Longer refrigerant lines, tricky placement, or electrical work can raise the price. That's why we offer free installation estimates, so you know what your setup will cost.
We offer four installation packages: Essential, Silver, Gold, and Platinum. You'll see pictures, pricing, and what's included in each, making it easier to compare your options without guessing. Once you've found the right fit, we'll email everything for you to review before signing. HVAC financing is also available, subject to approval, if you'd prefer monthly payments. You choose what works for your home and budget.
- $0
to discuss system sizing, equipment options, and unit placement before you decide to move forward.
- 4
Essential, Silver, Gold, and Platinum. You'll see pictures, pricing, and what's included in each.
Mini-Split, New Ducts or Window Unit?
Three Ways to Fix a Room the AC Misses
A duct extension is sometimes the right answer, and where your system has capacity to spare we will tell you that instead of selling you equipment. Where it does not, the choice is usually between a ductless head and a window unit, and they are not close on anything except the first invoice.
| What you're comparing | Ductless mini-split | Extending the ducts | Window unit |
|---|---|---|---|
| How the room gets conditioned | A wall head fed by its own outdoor unit | More air from the central system already in place | A self-contained box in the window frame |
| Heating | Yes, from the identical equipment | Yes, from the central furnace | Rarely |
| Effect on the rest of the house | None, it runs independently | Can starve the rooms already on that run | None |
| Noise in the room | Low, the compressor is outside | Whatever the central system already does | High, the compressor is in the window |
| Where it belongs | A room the ducts cannot reach or keep up with | A system with spare capacity and a short run | A short-term fix |
What Makes a Good Mini-Split Installation?
The Details That Matter Long After Installation
The Right Size for the Room
Bigger isn't automatically better with ductless equipment. An oversized mini-split may struggle with humidity control, while an undersized one can spend the hottest afternoons trying to catch up. We consider the room's square footage, insulation, windows, and sun exposure before recommending a system that fits the space.
A Location That Actually Works
Nobody wants an indoor unit blowing straight at their desk or an outdoor condenser sitting outside their favorite window. Placement affects comfort, noise, drainage, and future maintenance access. We look for locations that work with how you use the room, not simply the easiest spots to install equipment.
Our Guarantee Doesn't End at Installation
A new mini-split is a big investment, and we want you to feel confident in it. That's why our work comes with a 365-day money-back guarantee. If something isn't right, give us the chance to make it right. If we can't resolve the issue under the guarantee's terms, you may qualify for your money back.
What Happens When We Install a Mini-Split
- We Plan the Layout
We assess the space, confirm installation locations, and work out how the indoor and outdoor equipment will connect. Electrical requirements, drainage, and access for future maintenance all factor into the plan.
- You Approve the Installation
You'll receive a written estimate covering the recommended equipment and installation work. We explain any additional requirements before you commit, so you can make your decision with the full picture in mind.
- We Schedule and Prepare
After approval, we'll arrange an installation date and coordinate the equipment and materials. We'll also address any applicable permit requirements before work begins, based on your municipality and the project's scope.
- We Install and Test Everything
Our crew mounts the equipment, connects the refrigerant lines and electrical components, and commissions the system. Before wrapping up, we'll demonstrate the controls and show you how to use your new mini-split.
Book Now
No cooling or no heat? Call (972) 776-4455, day or night.
That Room Isn't Going to Fix Itself
Your Free Mini-Split Estimate Starts Here
Maybe you've been putting up with a hot upstairs bedroom for years. Or perhaps you're finally ready to turn the garage into a space you can use all year. Whatever the project, you can find out what a ductless system would cost without committing to one. Our installation estimates are free.
Questions Before You Commit?
Wondering how much noise a mini-split makes, what it looks like on the wall, or how much electricity it uses? Ask away. We'd rather answer those questions now than have you second-guessing your choice after installation.
Prefer to Spread Out the Cost?
You don't necessarily have to cover the entire installation upfront. Ask about our HVAC financing options when you contact us. We'll help you explore available payment plans, subject to approval, so you can decide what fits your budget.
4.7stars from 700+ Google reviewsReady to talk mini-splits? Call (972) 776-4455 or request your free estimate online.
Ductless Mini-Split Installation Across DFW
A garage conversion in Richardson, an upstairs bonus room in Plano, or a new home office in Frisco can all benefit from their own heating and cooling. We install ductless systems throughout McKinney, Allen, Carrollton, Irving, Grapevine, and surrounding Dallas-Fort Worth communities, too.
Coverage in parts of North Dallas and Fort Worth depends on the ZIP code. If you're outside our main service area, give us your address when you call. We'll check whether we can take on your installation project.
Our Service Area
- Richardson
- North Dallas (75225, 75229, 75230)
- Carrollton
- Irving
- Hurst
- Euless
- Bedford
- North Richland Hills
- Haltom City
- Fort Worth (76179)
- Grapevine
See all service areas »
Don't see your street? Call (972) 776-4455 and ask.
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The technicians were professional and very knowledgeable. We had our AC serviced, new Gas Furnace installed with air purifier, and also had our air ducts cleaned. I would go to CityLine first before any other company!
Kyle Cooper
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The technician, Alberto, arrived on time, knew the equipment he was working on, was very professional, and was happy and very thorough.
Alann Nevarez
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They contacted us in a timely manner, were on time for the service call and took care of the issues.
Jeffrey N.
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Alberto Nevarez was great. Helped inform us of everything we needed to know plus extra. He went above and beyond to educate us as new home buyers of our systems and needed maintenance. 10 out of 10 would recommend
Tony A.
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CityLine came to my home to check my unit for heating for this winter and were excellent. Technician Jay Jones was superb! He explained in detail everything he reviewed and gave me confidence in the service provided. 10/10! Would recommend to everyone!
Ryan F.
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Travis came by to do a check up on the system. He's very courteous and friendly. All is well with the system.
Adrien C.
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Questions About Mini-Split Installation
Yes, and that is the usual arrangement. It runs on its own equipment and its own circuit, so the central system keeps doing precisely what it does now for the rest of the house.
Yes, and converted garages are among the most common rooms we put one in. An uninsulated garage is a harder space to hold at temperature, so the sizing matters more there, and we will walk through that at the estimate.
Amana and Daikin, and we are a dealer for both. Daikin builds ductless equipment as a core product line rather than a sideline. Fujitsu is the one line we turn away, so mention it early if that was what you had in mind.
A single head in a straightforward room is usually a one-day job. Several heads on one outdoor unit, or a long or awkward line-set route, runs longer. Your estimate carries the expected duration rather than a guess on the day.
Not a federal one, not anymore. The federal energy credit that covered heat pumps ended for systems placed in service from 2026, so older guides quoting a figure are out of date. Utility programs in North Texas change year to year, so ask at the estimate and we will tell you what is actually live.
A room that is always too warm or too cold? Give it a system of its own.
(972) 776-4455Office hours 8 AM to 6 PM, with phones answered around the clock.