| Type | Unit Cost | Install Labor | Total Installed | Lifespan |
|---|---|---|---|---|
| Tank — Electric (40–50 gal) | $400–$800 | $300–$600 | $700–$1,400 | 8–12 yrs |
| Tank — Gas (40–50 gal) | $450–$900 | $350–$700 | $800–$1,600 | 8–12 yrs |
| Tank — Large (75–80 gal) | $700–$1,400 | $400–$800 | $1,100–$2,200 | 8–12 yrs |
| Tankless — Electric | $500–$1,000 | $500–$900 | $1,000–$1,900 | 15–25 yrs |
| Tankless — Gas | $700–$1,500 | $700–$1,500 | $1,400–$3,000 | 15–25 yrs |
| Heat Pump (hybrid) | $800–$1,500 | $400–$800 | $1,200–$2,300 | 10–15 yrs |
| Solar Water Heater | $2,000–$4,000 | $1,000–$2,000 | $3,000–$6,000 | 20+ yrs |
Most jurisdictions require a permit for water heater replacement. Permits cost $50–$150 and may require a plumbing inspection. Licensed plumbers typically include permit handling in their quotes.
Switching from electric to gas (or adding a tankless gas unit) may require a new gas line — add $500–$2,000. Tankless electric units often need a 200-amp panel upgrade or new dedicated circuits — add $800–$3,000.
Many local codes now require a thermal expansion tank ($50–$200 installed) when replacing a tank water heater in a closed plumbing system.
Tankless heaters use 20–30% less energy, last twice as long, and never run out of hot water. The $700–$1,500 premium over a tank unit typically pays back in 7–10 years through energy savings. Best for households with high or unpredictable hot water demand.
For tank heaters: 40 gallons for 1–3 people, 50 gallons for 3–4 people, 75–80 gallons for 5+ people. For tankless: size by flow rate (GPM) — a 9–10 GPM unit handles most whole-home needs.
Yes. Heat pump water heaters qualify for a 30% federal tax credit (up to $600) under the Inflation Reduction Act through 2032. Many utility companies also offer rebates of $100–$400 for efficient models. Ask your contractor or check your utility's website.
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