Water heater installation costs in Rowlett, TX typically range from $1,200 to $3,500 for a standard tank unit, including the water heater, labor, permits, and disposal of the old unit. A 40 to 50-gallon gas or electric tank installation usually runs $1,200 to $2,000, while high-efficiency or larger capacity models cost $2,000 to $3,500. Tankless water heater installations range from $3,000 to $5,500 depending on the model and any gas line or venting modifications required. For a detailed breakdown, see our guide on tankless vs tank comparison.





