Our genius-plumbers are certified to set up a variety of Water Heater systems, from various brands to domestic or industrial. Setting up a water heater costs $703 and also $1,750+, or approximately $1,000+, consisting of the system and also labor. Tankless heaters cost about $900 to $3,500. Water heaters cost $350 to $3,000+ for the system alone while plumber labor runs $40 to $200 per hr. The National Average is $1,150. The typical Range: $700 - $1,680. Low End - High End: $337 - $9,890.