Water heater replacement in Attleboro typically ranges from $1,900 to $4,500, depending on the unit type and installation complexity. A standard 40-50 gallon gas unit averages $2,000-$2,800 installed, while electric units run $1,900-$2,500.Tankless units cost more upfront ($2,500-$4,500) but often pay for themselves through energy savings. We provide upfront pricing before any work begins, so you know exactly what to expect.Massachusetts residents can also take advantage of Mass Save rebates and 0% financing, which can significantly reduce your out-of-pocket costs for energy-efficient models.