In Demand Plumbing Heating & Air is a trusted, family-owned company serving Antioch, Brentwood, Oakley, Pittsburg, and Concord. Since 2010, we’ve provided expert plumbing, drain, sewer, and HVAC services with a focus on quality workmanship and long-term solutions. We specialize in water heaters, tankless systems, leak detection, repiping, AC repair, heat pumps, and system replacements. Our trained technicians take the time to explain your options so you can make the best decision for your home. With flexible scheduling, financing options, and a maintenance plan, we make it easy to keep your home comfortable and efficient year-round.