Compare 2 Verified HVAC Companies in Saint John, IN

Tech One Heating & Air Conditioning is a locally owned HVAC contractor serving Northwest Indiana and Chicago's South Suburbs. With over 20 years of experience, we specialize in heating, air conditioning, and ventilation services for residential and commercial clients. Our commitment to quality, efficiency, and customer-centric solutions ensures optimal comfort and system performance for every client.

Naughton Mechanical provides residential and commercial HVAC services including installation, repair, and maintenance of heating, cooling, and air quality systems. Established in 1989, we serve Northwest Indiana and Chicagoland with Trane-certified expertise and 24/7 emergency support. Our family-owned business combines technical proficiency with personalized service to ensure customer comfort and satisfaction.