In Demand Plumbing Heating & Air is a trusted plumbing and HVAC company proudly serving homeowners and businesses throughout Contra Costa County since 2010. Based in Antioch, California, we specialize in plumbing repairs, drain cleaning, sewer services, water heater installation, tankless water heaters, hydro jetting, leak detection, repiping, AC repair, heating services, heat pumps, mini split systems, and complete heating and cooling solutions. Our experienced technicians are committed to providing honest recommendations, quality workmanship, fast response times, and reliable customer service. We offer financing options, preventative maintenance plans, and Good, Better, and Best service options