Ductless Mini-Split Systems in Arlington Heights, IL
If you have a home addition, a sunroom, or rooms that never seem to stay comfortable no matter what you do, a ductless mini-split system could be exactly what you need. McNally’s Heating and Cooling brings trusted, locally-rooted expertise to mini-split installation, service, and repair throughout Arlington Heights and the surrounding communities.
The Smart Choice for Arlington Heights Homes
Arlington Heights is home to a wide variety of residences, from charming older bungalows and Cape Cods to newer additions and finished basements where extending existing ductwork simply is not practical. Ductless mini-split systems solve that problem elegantly, delivering efficient heating and cooling exactly where you need it without tearing into walls or ceilings. They are a particularly good fit for homes that were built before central air conditioning was standard.
Our Illinois winters are no joke, and our summers bring that heavy, humid heat that makes a well-functioning comfort system feel like a necessity rather than a luxury. Mini-splits handle both seasons well, operating efficiently across a wide range of temperatures and giving homeowners precise control over individual zones. For many Arlington Heights residents, installing a mini-split is one of the most practical home comfort upgrades they can make.
What We Offer: Installation, Service, and Repair
McNally’s has been voted the Best Heating and Air Conditioning Company multiple times, and that recognition reflects a genuine commitment to doing this work well. From your initial consultation through final installation and beyond, our team takes the time to understand your home, your goals, and your budget before recommending a system. We work with quality equipment and take pride in clean, professional installations that are built to last.
Our mini-split services include:
- Full system installation for new additions, converted spaces, and homes without existing ductwork
- Multi-zone system design for whole-home comfort solutions
- Seasonal tune-ups and preventative maintenance
- Repair services for existing mini-split systems of all makes and models
- Expert guidance on energy-efficient equipment options
We also serve commercial businesses throughout the area, so whether you are managing a small office, a retail space, or a rental property in Arlington Heights, we can help you find the right solution. Check out our current promotions to see if there are any opportunities to save on your next mini-split project.
Serving Arlington Heights and Nearby Communities in Cook County
Our service area is centered in Arlington Heights and extends throughout Cook County, including neighboring communities like Palatine, Rolling Meadows, and Mount Prospect. Many homes across this area share similar characteristics, older construction, rooms added over the decades, and layouts that were never designed with modern HVAC efficiency in mind. We understand these homes because we have worked in them for years.
Ductless mini-splits are not a one-size-fits-all solution, and the right setup depends on your specific home and comfort needs. Our team will assess your space honestly and explain your options clearly, so you can make a confident, informed decision. Schedule a consultation today and find out whether a ductless system is the right fit for your home.
Frequently Asked Questions
Is a ductless mini-split system a good option for an older home in Arlington Heights?
It is often an excellent option. Many older homes in Arlington Heights were built without central ductwork, and adding it can be expensive and disruptive. A ductless mini-split lets you add efficient heating and cooling without major renovation. It is one of the most practical upgrades available for homes of that type.
Can a mini-split handle both heating and cooling in the Arlington Heights climate?
Yes. Modern mini-split systems are heat pumps, meaning they provide both heating and cooling from a single unit. They perform well even during cold Illinois winters, though homes in particularly harsh cold snaps may benefit from a supplemental heating source. We can walk you through your options when we assess your home. You can also explore our full heating services if you want to compare approaches.
How long does a ductless mini-split installation typically take?
For a single-zone system, installation is often completed within a day. Multi-zone systems covering several rooms may take a bit longer depending on the layout and complexity of your home. We will give you a clear timeline during your consultation so you know what to expect.
Do you service mini-split systems that were installed by someone else?
Absolutely. We service and repair ductless mini-split systems of all major makes and models, regardless of who originally installed them. If your system is underperforming or needs attention, we are happy to take a look. You can schedule a service visit at your convenience.
Are there any promotions available for mini-split installation in Arlington Heights?
We periodically offer promotions on equipment and services. Visit our promotions page to see what is currently available. It is always worth checking before you schedule your installation.
Why McNally's?
- Competitive Pricing
- Honest, competitive pricing, with no hidden costs.
- Peace Of Mind
- 10 year limited labor warranty - installs, 2 year limited warranty on repairs.
- Knowledgable Technicians
- Professional, punctual and courteous service technicians.
- Quality Control
- All of the work we complete is thoroughly tested.
- Award Winning
- Recognized multiple times for our exceptional service.


