In Demand Plumbing Heating & Air is a locally owned and operated company proudly serving Contra Costa County with professional plumbing, heating, ventilation, and air conditioning services. Since 2010, we have provided homeowners and businesses with reliable repairs, system replacements, maintenance, and energy-efficient upgrades focused on long-term comfort and performance.Our licensed and insured team specializes in plumbing repair, drain cleaning, sewer repair and replacement, hydro jetting, leak detection, water heater installation, tankless water heaters, repiping, heating and cooling repair, HVAC system replacement, mini split installation, heat pumps, duct