National cost guides put a tank water heater replacement at about $600–$3,100 installed and a tankless one at about $1,400–$5,600 (HomeGuide, updated Jan 2, 2026). HomeAdvisor (updated Jun 17, 2026) reports most homeowners pay $882–$1,826. Nashville-specific prices are UNKNOWN; get written quotes.
Nashville Plumbers › Water Heater Replacement Cost (2026)
Tank and tankless water heater replacement costs, with sources
All figures are national ranges published by each source on the date shown, checked 2026-10-21. They are not quotes and not Nashville data.
Tank vs. tankless
- Tank: lower upfront cost; HomeGuide lists an 8–12 year lifespan.
- Tankless: higher upfront cost, often needs gas line, venting or electrical upgrades; HomeGuide lists 15–20 years.
- Switching from tank to tankless costs more than a like-for-like swap because of that extra work.
What changes the price
- Fuel type (gas, electric, propane) and whether you switch fuel.
- Tank size or tankless flow rate.
- Venting, expansion tank, permits, relocation and disposal of the old unit.
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Frequently Asked Questions
- How much does water heater replacement cost in Nashville?
- Local prices are UNKNOWN. National guides show $600–$3,100 for a tank unit installed and $1,400–$5,600 for tankless (HomeGuide, "Water heater installation cost", updated Jan 2, 2026).
- Is tankless more expensive to install?
- Yes. HomeAdvisor lists $1,400–$3,900 for tankless versus $600–$2,500 for tank (HomeAdvisor, "Water heater replacement cost", updated Jun 17, 2026).
- Do I need a permit?
- Often yes. HomeAdvisor lists $25–$300 nationally. The Nashville fee is UNKNOWN; ask Metro Codes or your plumber.
- How long does a water heater last?
- HomeGuide lists 8–12 years for tank units and 15–20 years for tankless.