Champion AC installed ventilation for my nail salon. I had inquired with multiple AC companies and could not find one that was knowledgeable and experienced, until I found Champions AC. Charles and Mark knew exactly what my nail salon required by code. Their professionalism and ability to meet my timeline was beyond my expectation. Champion AC completed the job in one day and had also sent out a professional carpenter to patch and paint a wall, where the ventilation was installed. We plan on a second location, in the future, and will definitely return to Champion AC for our ventilation needs. We highly recommend Champion AC for residential/commercial HVAC services.