Experienced HVAC Repair in Saint Louis, MO 63125 - Dunn Heating & Cooling

Our installation process is built on the technical expertise and customer-first approach that has earned us local awards like the Best of Ballwin. We don't just replace units; we ensure your new system is correctly sized and configured for your specific Saint Louis home, promoting efficiency and longevity. Our team holds the highest local certifications, so you can trust the job is done to meet and exceed regional standards.

Yes, evaporator coil freeze-ups are a frequent problem in our Saint Louis climate, often caused by restricted airflow, low refrigerant, or a malfunctioning blower. As technical experts, we diagnose the root cause—not just the symptom. We'll check your filters, ductwork, and refrigerant levels to fix the immediate freeze-up and recommend solutions, like proper maintenance or air sealing, to prevent it from happening again.

We understand a broken system is urgent, especially with our local weather extremes. Our customer-service-focused team prioritizes getting to you quickly. Once on-site, our award-winning technicians use their deep system knowledge to provide clear explanations and efficient, lasting repairs. We stand by our work with a commitment to your satisfaction, ensuring you're not left unhappy with the service or the result.