Water heater installation costs in Fair Oaks typically range from $1,200-$3,500, depending on the type and complexity of the job. Basic tank replacements start around $1,200-$1,800, while tankless installations usually run $2,500-$3,500.The final price depends on your specific water heater choice, any necessary upgrades to gas lines or electrical systems, and permit requirements. We provide upfront pricing in writing so you know exactly what you’re paying before we start.Many Fair Oaks homeowners are surprised when our final bill comes in lower than our estimate – we don’t pad our quotes or add hidden fees.