Family-owned and operated since 2012. Serving Posen, IL and 25+ Chicago south suburbs with honest, expert HVAC service — residential and commercial.
At Erwin Heating & Cooling, our mission is simple: deliver reliable, high-quality HVAC solutions for homes and businesses at a fair price. Owner Erwin Mendez personally handles every job — from minor repairs to full installations — with the commitment to excellence and customer satisfaction that has earned us an A+ BBB rating since 2013.
Years of experience
Satisfaction rate
Hours response time
We're a local, family-owned business with over 13 years serving the Chicago south suburbs. Every job gets personal attention from Erwin himself — no subcontractors, no runaround. We're available 24/7, speak English and Spanish, and we stand behind every repair and installation we do.

Meet the skilled professionals who drive our success.






Contact us via phone or online to schedule your AC service.
Our certified technicians will arrive on time to inspect your system.
Follow-up & support
We provide follow-up support and ongoing maintenance options.
No hesitation, we can help you with a free Consultation