Water heater replacement in Westwood typically ranges from $1,900 to $3,500, depending on the unit type and installation complexity. Standard tank replacements start around $1,900, while high-efficiency models cost more upfront but qualify for rebates.Tankless installations generally cost $2,800-$4,500 due to additional labor and potential electrical or gas upgrades. Heat pump units cost more initially but offer substantial Mass Save rebates that reduce your net cost.We provide transparent, upfront pricing that includes the water heater, all installation materials, permits, and removal of your old unit. No hidden fees or surprise charges.