Ductless Mini Split AC FAQ


Ductless mini split AC systems are exploding in popularity! Do you have any questions about these systems, including how they work and whether they are right for you? The answers to some of these questions can be found right here. If you need more information, call our team at Hi-Tech Plumbing & Air and we’d be glad to help you!

What is a mini-split system?

A ductless mini-split air conditioner is a fully-functioning air conditioning system, only in a smaller package. Whereas your central air conditioner consists of two large units, a mini-split system contains everything from the compressor and evaporator into two small boxes, usually no more than a couple of cubic feet in size. They’re sort of like a window-mounted cooling system, only they split the indoor and outdoor sections apart and connect them with specialized refrigerant and electrical lines.

How do mini-split systems work?

The simple answer: exactly like a central air conditioning system would. In fact, their operating principles are exactly the same: they use refrigerant to move heat from inside your home to the outdoor environment. However, because they are at a much smaller scale compared to a central cooling system, they cost less and fit into much smaller spaces. This also makes them much quieter and more energy-efficient too. 

What are ductless mini split air conditioners for?

Ductless mini split air conditioning systems serve a variety of purposes. They can add additional cooling power to an area of your home that struggles to stay cool during certain hours of the day (or even throughout the day). They can provide cooling to an area of your home that was not constructed with cooling in mind, such as a garage, guesthouse, or workshop. They can even provide precise temperature control for new additions to your home such as new bedrooms or extended living spaces. Want to finish your attic? Add cooling with a ductless system!

However, modern ductless mini split systems go beyond just single-area use and can even be used to cool entire homes. For example, if you live in an older home that was not built with air conditioning in mind, then a ductless mini split can allow you to air condition your home without the cost and frustration of building air ducts. 

How many rooms can a mini-split cool?

In short, we wouldn’t recommend cooling more than one room with a mini-split air conditioner. However, Modern mini-split systems are actually designed to work together to cool multiple zones through the use of several different systems. 

Several systems can typically be connected to one compressor for optimal energy efficiency and space-saving, and adding these systems offers great temperature control and flexibility by only requiring you to use your cooling system in rooms you are actually using.

A single unit does not have the cooling capacity of a typical central AC system, but by combining several units together in unique, individual zones, your entire home can be more comfortable and cooler while you could save tremendously on your energy bills!

What size mini-split system do I need?

This answer will vary depending on what it is you want to do. If you’re just trying to cool an office space or bedroom, then you probably won’t need a big one. If you’re trying to cool a large living area, you will need a large unit or even multiple units to work together. Because your situation is as unique as you are, we recommend talking to one of our AC installation pros for an assessment.

How long do mini-splits last?

A mini-split system will last around the same amount of time a central cooling system will if you take good care of it: as long as 20 or 25 years. Because these systems are smaller, they are typically less prone to problems than their full-size central cooling counterparts. However, we do recommend maintaining your mini-splits with annual AC maintenance services. Doing so will improve longevity.

What is needed to install a ductless AC system?

Ductless mini split systems generally have much lower installation requirements than a full central air conditioning system. Most of the time, all you really need is a nearby 120-volt electrical connection that can be tapped into and an exterior-facing wall that can be drilled through. For your electrical system, you will need at least 15 amps but a 20-amp circuit is often the better choice if available. 

Your technician will need to put a hole in your exterior facing wall to allow power and refrigerant lines to travel out to your outdoor compressor unit. This hole will be sealed to prevent energy loss and pest intrusion, and in most cases, this hole is no bigger than a tennis ball. Likewise, this hole can often be hidden by mounting your air conditioner’s indoor unit on the exterior facing wall. 

How much is a ductless air conditioner?

Ductless air conditioners vary in price based on a number of factors. A single unit is substantially more affordable than a full-size central cooling system. However, keep in mind that they serve a different purpose. If you’re looking to cool your entire home with a ductless mini split air conditioner, then you will need to purchase and install multiple systems. With that being said, however, many contractors offer discounts to those who purchase and install multiple systems at the same time. 

Also, combining installations where you connect multiple indoor units to the same outdoor unit can cut down on costs even further. When all is said and done, a whole-home ductless mini split setup can have a very comparable price tag to installing a new central cooling system. This is one of the reasons why ductless mini split air conditioners are becoming so competitive in the marketplace.

Do Ductless Systems Heat?

The short answer? It depends. Some systems are heat pumps that can reverse refrigerant flow and provide heating in colder months. However, these are more expensive systems. The majority of ductless AC systems are for cooling only. However, for homes and structures that already have an alternative heating system installed, such as a boiler and radiator system, this lack of a heating function isn’t a problem at all.


They did great work and did not leave until the…

-Dusko Rauzan

Punctual at the appointment, clean with a nice job done.

-Always Fada

Hi-Tech is an outstanding company which provides quality work and…

-Callie Mundell

This company was excellent I found them by mistake in…

-Diana M Stio

From the appointment setter Michael to the technician Ivan, they…

-Tracie Shieler


Keep Your System
Running Year-Round

Our Protection Plans are the perfect way to ensure that your systems remain in optimal condition while saving you time and money.

We Love What We Do


Common AC Repair Problems in West Palm Beach

If your air conditioner wasn’t installed properly or you don’t maintain it regularly, it’ll breakdown sooner than expected. Considering how hot and humid it is in West Palm Beach, a broken air conditioner can become more than a mere inconvenience.

Regardless of the type of AC system you have, there’s always a chance that something will go wrong, leaving you with little or no cool air when you need it most. If you notice any one of the following warning signs, you should contact a professional HVAC contractor immediately for high-quality AC repair in West Palm Beach or the surrounding areas.

Cooling problems that might require AC repair in West Palm Beach include:

  • Your AC is leaking refrigerant – One of the most common problems homeowners face with their AC system is low refrigerant, whether it wasn’t charged properly during installation or it has a leak. If your AC is leaking refrigerant, you’ll need an AC specialists in West Palm Beach to fix it, test it and charge it properly. Remember that the AC’s refrigerant charge should match the manufacturer’s specifications to ensure it operates at peak efficiency. You should also repair a refrigerant leak right away to avoid harming the environment.
  • Your AC’s electric coil has failed – Your AC system has more than 100 components that work together to ensure the unit operates properly. Unfortunately some of those components can wear out if you don’t maintain them, including the compressor and the fan controls. This is especially true if the AC cycles frequently, which is common with an over-sized system. Wires and terminals can also corrode over time. It’s important that a professional inspect them routinely to avoid developing safety hazards.
  • Your AC isn’t draining properly – Because of the high humidity in Florida, it’s especially important for homeowners to check the condensate drain line near their outdoor AC unit. A clogged line can trap water in your air conditioning system, and the evaporator coil will turn it to ice eventually. This can cause your AC to freeze, which will result in either an air conditioning repair or a complete AC replacement.

For reliable air conditioning repairs in West Palm Beach & the surrounding areas, contact us online or at (561) 708-4989 today!

Subtle Signs You Need AC Repair in West Palm Beach

  • Humidity – Especially in these Floridian summers, the heat is particularly brutal when there’s humidity involved. It’s not common knowledge that your AC is supposed to regulate humidity as well so, if you notice an increase in your indoor air’s humidity, call in our experienced specialists for comprehensive AC repair in West Palm Beach.
  • Rising utility bills – If you’re noticing an uptick in your electrical bill in the summer time, there’s a good chance it’s your AC. If something is broken or not working as well as it could, it might mean that your AC needs to do extra work to properly cool and that’ll cost you.
  • Less airflow – If you’re not getting the same amount of air that you’re used to, then you might have a leak in your ductwork that could use the attention of our West Palm Beach air conditioning repair specialists. No air means you have unit on the fritz or perhaps a blower fan that’s malfunctioning.
  • Smells that are off – Something burning like plastic could be coming from your AC while the musky smell of mold or mildew could mean your unit needs to be inspected by a licensed professional.

AC Repair Vs. Replacement

When your AC unit breaks down, you’re left with two options you could either replace the unit outright or hire an experienced specialist for AC repair in West Palm Beach or throughout Palm Beach County. While repair may seem like the more financially prudent maneuver, that’s not always the case. You should consider AC replacement if any of the following apply.

  • Your unit requires R22-Freon – Because of the 2020 Freon Ban while the use of this coolant isn’t regulated, the production of it has stopped. It will become increasingly expensive as time goes on so it’s better to make the switch than repair these units.
  • Your AC is 10 years or older – On average AC units last from 8-12 years so if yours is as old or older then you should reconsider AC repair in West Palm Beach, particularly if it’s an expensive repair, and opt for a new installation.
  • The cost of the repair is high – Usually if the cost of an AC repair comes close to half the cost of a new installation, it’s a better idea to get it replaced. If you have an older unit, even a moderately expensive repair should be reconsidered.
  • The frequency of repairs is substantial – While our AC repair specialists will always be happy to fix your unit, if you’re getting to know them by name because they come by so often, a new installation might be better for you.

Repairing, Maintaining & Upgrading Your Air Handler

Experiencing a lack of cool air? Your air handler may be to blame. Because your air handler does all the heavy lifting and endures daily stress, it is more prone to failure and other issues. Fortunately, Hi-Tech Plumbing & Air offers emergency air handler services.

When you call our helpline, we’ll dispatch an expert technician to get your system working and get you back to being cool and comfortable. We even offer regular AC tune-ups to find and fix problems fast and can upgrade your old air handler to a powerful and more energy efficient model.

Further Reading:

Contact Us


(561) 708-4989

West Palm Beach Florida
Contact Us