HVAC Services in West Dundee, IL
From the historic blocks above the Fox River to the businesses along Randall Road, McNally’s Heating and Cooling serves all of West Dundee. We are licensed, insured, and have been voted the best heating and air conditioning company multiple times.
Heating and Cooling for West Dundee Homes and Businesses
West Dundee's oldest homes date to the 1800s, and keeping century-old walls comfortable without wrecking their character is a skill our technicians practice constantly. Meanwhile the Randall Road corridor runs on modern rooftop units and commercial systems that cannot afford downtime. We service both worlds daily.
The full range of residential and commercial work is available on one call. Here is what we offer in West Dundee:
From Victorian Homes to Modern Storefronts
Older village homes often heat with boilers and radiators, and we service, repair, and replace them rather than talking owners into abandoning them. When central air is the goal in a house that never had ductwork, high-efficiency mini-split systems reach rooms duct runs never could. The house keeps its character and gains its comfort.
On the commercial side, we keep storefronts, restaurants, and offices along the corridor running with scheduled maintenance and fast repair response. Comfortable customers stay longer, and business owners here know it.
Why West Dundee Trusts McNally’s
We work throughout West Dundee and its neighbors East Dundee, Carpentersville, and Sleepy Hollow, so the Fox Valley is home turf rather than a destination. Homeowners have voted McNally’s the best heating and air conditioning company multiple times.
Licensed and insured, we put prices in writing before work begins and explain every finding in plain terms. Check the current promotions, or read our heating and air conditioning pages for the complete picture.
Frequently Asked Questions
How quickly can you reach West Dundee?
Fast, in most cases, since the Fox Valley towns anchor our daily routes. Urgent no-heat and no-cool calls come first, and we quote arrival windows we can genuinely hit.
Do you service boilers and radiators in older homes?
Yes, regularly. Many of West Dundee's historic homes still heat beautifully with boilers, and we maintain, repair, and replace them without pushing owners toward forced air. If the system suits the house, we keep it running.
Can I add air conditioning to a house with no ductwork?
Almost always, most cleanly with a ductless mini-split system that cools each zone from compact wall units. Installation is far less invasive than retrofitting ducts through century-old walls, and efficiency is excellent.
Are you licensed and insured for work in Kane County?
Fully. Permits, inspections, and code compliance are handled by us on every installation, and the documentation ends up in your hands.
Do you offer commercial HVAC service along Randall Road?
Yes. Retail, restaurant, and office spaces are part of our regular West Dundee work, including rooftop units. Scheduled maintenance keeps systems reliable during business hours, which is when reliability actually counts.
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.


