L J Denner & Sons

L J Denner & Sons has served Norwalk area homeowners for decades as a family-owned air conditioning contractor. The business operates under owner Jerry Denner, whose son now works alongside him, carrying forward a multi-generational approach to residential HVAC care. The company maintains standard weekday hours Monday through Friday from 8 AM to 4 PM and maintains a perfect 5-star rating from local customer reviews.

What distinguishes this contractor is Jerry Denner's hands-on leadership style and direct involvement on every job site. The recent installation of a 5-ton HVAC system for a Norwalk homeowner showcased this approach, with the owner present throughout the entire project to ensure quality control. Their experience spans maintenance, emergency repairs, and full system replacements for aging heating and cooling equipment.

Daniel Schlesinger has relied on L J Denner & Sons for three years, calling them during winter emergencies when his older HVAC system failed. He describes the team as consistently responsive and knowledgeable, with each technician clearly communicated about necessary repairs. The recent new system installation was completed cleanly on the first attempt, with all five crew members demonstrating professional knowledge and clear communication.