HVAC Services in Mount Prospect, IL
McNally’s Heating and Cooling is proud to serve Mount Prospect homeowners and businesses with a full range of HVAC services built around comfort, reliability, and honest workmanship. Whether you’re preparing for another frigid Illinois winter or bracing for the heat and humidity that settles over the northwest suburbs each summer, our team is here to help.
Comprehensive HVAC Services for Mount Prospect, IL Homes and Businesses
Mount Prospect is a community where neighbors know each other, local pride runs deep, and homes are well cared for. That same attention to quality is what we bring to every HVAC job we take on here. From routine maintenance to full system replacements, McNally’s offers the kind of dependable service that homeowners in this area have come to count on year after year.
Our heating services cover everything from furnace repair and installation to boiler service and installation, making sure your home stays warm no matter how cold it gets along the I-90 corridor. On the cooling side, our AC service, repair, and installation keeps your system running efficiently through the hottest stretches of summer.
We also work with commercial clients throughout Mount Prospect, offering the same level of care and responsiveness that residential customers receive. Whether you manage a small office or a larger commercial space, we can design a service plan that fits your needs and your schedule.
All the HVAC Services Mount Prospect, IL Residents Need
One of the things that sets McNally’s apart is the breadth of what we offer under one roof. Mount Prospect homeowners do not need to call multiple companies for different systems. We handle it all, and we handle it with the expertise that comes from years of serving communities across Cook County and the surrounding northwest suburbs.
Here is a look at the services we provide in Mount Prospect:
- AC Service, Repair, and Installation
- Heating Service, Furnace Repair and Installation
- Boiler Service and Installation
- Heat Pump Service, Repair, and Installation
- Ductless Mini-Split Systems
- Air Duct Cleaning
- Air Purification
Each of these services is backed by the reputation McNally’s has built across the northwest suburbs, including neighboring communities like Des Plaines, Arlington Heights, and Elk Grove Village. We are voted the best heating and air conditioning company multiple times over, and we take that recognition seriously every time we show up at a door in Mount Prospect.
Why Mount Prospect Trusts McNally's Heating and Cooling
Residents who visit Randhurst Village or spend time at the Mount Prospect Historical Society know this is a community that values both tradition and quality. That is the same standard we hold ourselves to. McNally’s has earned trust across this area by being straightforward with our customers, transparent about pricing, and focused on long-term comfort rather than short-term fixes.
Indoor air quality is something more Mount Prospect families are paying attention to, and for good reason. Sealed homes in the winter months can trap airborne particles and allergens, which is why our air purification solutions and air duct cleaning services are so popular here. A cleaner system means cleaner air, and that matters for families of every size.
If you are ready to schedule service or just want to explore your options, we make it easy to book an appointment online. You can also check out our current promotions to see if there is an offer that fits your situation. Whatever your HVAC needs are in Mount Prospect, McNally’s is ready to help.
Frequently Asked Questions
Does McNally's service both homes and businesses in Mount Prospect?
Yes, McNally’s Heating and Cooling works with both residential homeowners and commercial businesses throughout Mount Prospect. Whether you need a furnace serviced in a single-family home or a full HVAC assessment for a commercial property, we have the experience and equipment to help.
What should I do if my furnace stops working in the middle of a Mount Prospect winter?
When temperatures drop sharply in the northwest suburbs, a heating failure is not something you want to wait on. McNally’s offers emergency HVAC services to help when you need it most. You can learn more about our emergency services and get the process started quickly.
Is a ductless mini-split system a good fit for my Mount Prospect home?
Ductless systems are an excellent option for older Mount Prospect homes that do not have existing ductwork, as well as for room additions or spaces that are difficult to heat and cool evenly. Our team can assess your home and help you decide if a ductless mini-split system makes sense for your situation.
How often should I have my air ducts cleaned in Mount Prospect?
Most HVAC professionals recommend having your ducts inspected and cleaned every three to five years, though homes with pets, allergy sufferers, or recent renovation work may benefit from more frequent service. You can learn more about what to expect from our air duct cleaning service in Mount Prospect.
Does McNally's offer any promotions for HVAC service in Mount Prospect?
Yes, McNally’s periodically offers promotions on select HVAC services and equipment. We recommend checking our promotions page to see what is currently available before scheduling your next appointment.
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.


