Commercial HVAC Services
D&K is a full-service commercial HVAC contractor with over 25 years serving businesses across Chicagoland. We understand that equipment downtime costs you money — our goal is fast, reliable service that gets you back up and running.
What We Do for Your Business
New Installations
Full HVAC system design and installation for new construction, build-outs, and expansions.
System Replacements
Upgrade aging rooftop units, split systems, and packaged equipment with modern, efficient alternatives.
Emergency Repairs
Rapid-response emergency service around the clock — we know your business can't wait.
Preventative Maintenance
Scheduled maintenance programs that extend equipment life and prevent costly breakdowns.
Filter Programs
Replacement filter programs customized to your building's schedule and specifications.
Indoor Air Quality
Commercial air filtration, ventilation upgrades, and IAQ solutions for healthier work environments.
Benefits of a D&K Commercial Maintenance Agreement
- Maximum efficiency — tuned equipment runs cleaner and costs less to operate
- Extended equipment lifespan through scheduled care and early issue detection
- Consistent comfort levels for your employees and customers
- Fewer emergency calls and large unexpected repair bills
- Priority response status — we service contract customers first
- Increased employee productivity in a reliably comfortable environment
- Customized plans tailored to your facility's specific needs
24/7 Emergency Repairs: D&K maintains a fleet of professional service technicians serving Chicago and the surrounding suburbs — available 24 hours a day, 7 days a week for emergency heating and cooling repairs.
Clients We've Served
D&K has installed and maintained HVAC systems in thousands of commercial locations throughout Chicagoland, including:
Restaurants & Hospitality
- White Castle
- Burger King
- Longhorn Steakhouse
- Panera Bread
- California Pizza Kitchen
- Starbucks
- Subway
- Dunkin'
- TGI Fridays
- Chili's
- Dave & Buster's
- Houlihan's
Retail & Specialty
- Ross Dress for Less
- Best Buy Mobile
- ZARA
- Savers
- Great Clips
- Affordable Dentures
- Extreme Trampoline
- Edgewood Country Club