Ductless Mini-Split Systems in Las Vegas, NV
A ductless mini-split heats and cools a room without tying into your ductwork. We install, repair and maintain them for additions, garages, casitas and rooms the central system never quite reaches.
- 24/7 emergency service
- Licensed technicians
- All makes and models
What a mini-split is and where it makes sense
A mini-split has two main parts: an outdoor unit that holds the compressor, and an indoor unit mounted high on a wall, in the ceiling or near the floor. A bundle of refrigerant lines, a drain line and control wiring joins them through a hole about three inches across. No ductwork is involved. Nearly all mini-splits are heat pumps, so the same equipment cools in summer and heats in winter.
Ductless is usually the right call where running new ducts would be awkward, or where the extra space would overload the system you already have:
- A room addition, enclosed patio or sunroom
- A garage workshop or home gym
- A casita or detached office
- An upstairs or west-facing bedroom that runs hot every afternoon
- An older home that never had ducts
If the whole house is uncomfortable, the answer is more likely in the central air conditioning or the ductwork than in adding a mini-split.
Sizing a mini-split for Las Vegas heat
Sizing decides whether a ductless system works well. We measure the room and look at insulation, window area, which direction the glass faces and how you use the space. A garage with an uninsulated door and a west wall needs far more capacity than a bedroom of the same size, and a casita with its own kitchen is different again.
Bigger is not safer. Most mini-splits use an inverter compressor that speeds up and slows down to match the load, but an oversized unit cannot turn down far enough on a mild day. It starts and stops more than it should, the room temperature swings and parts wear sooner. An undersized unit runs flat out on a 110°F afternoon and never catches up. One outdoor unit can serve a single room or several indoor units, each with its own controller and set temperature.
How we install a ductless system
- Place the indoor unit. It needs a clear throw across the room, a spot that does not blow straight at a bed or desk, and a path for the drain line to run downhill.
- Set the outdoor unit. It goes on a pad or wall bracket with open space around it for airflow and for servicing.
- Run the lines. Refrigerant lines, drain and wiring pass through the wall and are covered outside, because desert sun breaks down exposed pipe insulation quickly.
- Handle the electrical. Most systems need their own circuit and an outdoor disconnect.
- Test and start up. We pressure-test the lines for leaks, pull a deep vacuum to remove air and moisture, set the refrigerant charge for the line length, and run the system in both cooling and heating.
Poorly made flare connections and a skipped vacuum are common causes of early refrigerant leaks, so that last step is where we slow down.
Mini-split cleaning, maintenance and repair
The indoor unit has washable filters behind the front panel. In our dust, check them every two to four weeks through summer: slide them out, rinse them, let them dry and put them back. Keep weeds and stored items away from the outdoor unit, and rinse its coil gently with a garden hose with the power off. Do not use a pressure washer, which flattens the fins.
Filters do not catch everything, and over time dust builds up on the indoor coil and blower wheel. A professional cleaning washes both, clears the drain and checks refrigerant pressures and electrical connections. A maintenance plan keeps that on the calendar. Call for a repair if you see:
- Water dripping from the indoor unit
- Weak airflow or a musty smell
- Ice on the coil or the refrigerant lines
- Blinking lights or an error code on the display
- The unit running without cooling or heating the room
Refrigerant is not used up in normal operation. If the charge is low there is a leak, and it should be found and repaired, not just topped off.
Getting a ductless quote or repair
A mini-split cannot be sized properly over the phone, so an installation starts with a visit. We look at the room, the electrical panel and the possible locations for both units, then go over the options with you. For repairs, our licensed technicians work on all makes and models, and emergency service is available 24/7 when a casita or bedroom has no cooling. Financing is available, subject to approved credit. Call 702-497-0888 to set up a visit.
Frequently asked questions
Still have a question? Call 702-497-0888.
How many rooms can one mini-split cool?
One indoor unit cools the room it is in, and little of that air reaches other rooms through doorways. To cover several rooms you need an indoor unit in each, or a concealed indoor unit that feeds a few short duct runs. A single outdoor unit can typically serve several indoor units, depending on the model, with each room set to its own temperature.
Will a mini-split heat my garage or casita in winter?
Yes, as long as it is a heat pump model, which nearly all are. Las Vegas winters are mild, so a mini-split heats comfortably within its normal operating range here, even on cold desert nights. In a garage, how well it holds temperature depends heavily on the door: an insulated, weather-stripped garage door makes a big difference in both seasons.
How often should I clean mini-split filters?
Check them every two to four weeks during the cooling season and wash them whenever you see a gray layer of dust. Las Vegas dust loads these small filters quickly, especially in a garage or workshop. A clogged filter cuts airflow, which reduces cooling and can make the indoor coil ice over. A deeper cleaning of the coil and blower wheel is typically done once a year.
Does a mini-split need its own electrical circuit?
In most cases, yes. Mini-splits are generally installed on a dedicated circuit sized to the manufacturer's requirements, with a disconnect switch near the outdoor unit. Some small units run on 120 volts, while most larger and multi-room systems need 240 volts. We check your panel for capacity during the visit and tell you if any electrical work is needed first.
Can I install a mini-split myself?
We do not recommend it for most systems. A standard installation involves making leak-tight refrigerant connections, pulling a vacuum with specialized equipment, adjusting the refrigerant charge and wiring a new circuit. Handling refrigerant also requires federal certification. Mistakes at this stage tend to show up later as leaks, poor cooling or compressor damage.
Schedule service
Tell us what is going on and we will call you back to set a time. For anything urgent, the phone is fastest.
702-497-0888- 24/7 emergency service
- 3200 Kings Way, Las Vegas, NV 89102
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