In Demand Plumbing Heating & Air is a trusted, family-owned company serving Antioch, Brentwood, Oakley, Pittsburg, and Concord since 2010. We specialize in plumbing, drain, sewer, and HVAC services, including water heater repair and installation, tankless systems, leak detection, drain cleaning, sewer repair, repiping, AC repair, heat pumps, and system replacements. Our trained technicians focus on quality workmanship and long-term solutions, not quick fixes. We take time to explain your options so you can make the best decision for your home. With reliable service, financing options, and a maintenance program, we help keep your home comfortable year-round.