With unparalleled customer service, we take pride in providing the highest standards possible for air conditioning and heating services. Sigwald Service Co. services the Coastal Bend region, including Portland, TX, Rockport, TX, Aransas Pass, TX, Ingleside, TX and the surrounding areas. Our team of highly trained technicians serve residential and commercial. We work with all HVAC makes and models and handle new installations, equipment replacements, system repairs and maintenance.