A native to St. Charles, Brian McNally started his award-winning business out of his garage in 2013 by helping his community. Through a strong work ethic, word of mouth and positive referrals, Brian has been able to grow from a one-man business to a company with 65+ employees, including an additional location in Crystal Lake.
No matter where the job is located, the McNally team treats their customers like neighbors.
Under his leadership, McNally’s is a company that focuses on honesty, hard work, reliability and service. The team is known not just for technical expertise, but for building trust with their customers. They provide comprehensive residential HVAC and indoor air quality services, including heating system installation and repair, air conditioning installation and repair, furnace and AC maintenance, indoor air quality solutions (air purifiers, humidifiers and filtration systems), emergency HVAC services, smart thermostat installation and ductwork and system optimization. All services are done with a focus on energy-efficient solutions and modern indoor air quality technologies to help families breathe easier and live more comfortably.
The Tri-Cities are special to Brian, he believes they offer something rare: strong community values combined with growth, opportunity and deep-rooted traditions. Alongside serving St. Charles, Geneva and Batavia, McNally’s serves many other communities, including Glen Ellyn, Wheaton, Crystal Lake, Hampshire and beyond.
In addition to services provided by McNally’s, they are actively involved in all areas that they serve. The McNally’s team proudly supports a wide range of local nonprofits, schools, churches, youth programs and community organizations, believing that local involvement isn’t a side effort at McNally’s — it’s part of who they are.
A 2025 Chicago Titan 100 Honoree, as well as a 2025 Charlemagne Award nominee, Brian’s motto is simple: Do the right thing. Treat people well. Show up when it matters.
McNally’s Heating & Cooling
3491 Swenson Ave., St. Charles, IL 60174
630.363.9067 | mcnallyhvac.com
