Traditional tank water heater installation costs $900-$3,500 installed in 2026 for most homes. A 40-gallon gas unit runs $1,200-$2,200 installed; 50-gallon gas $1,400-$2,600; 40-gal electric $900-$1,700; 80-gal XL $2,000-$3,500. Heat pump water heaters (HPWH) run $3,000-$5,500 installed before any HEEHRA state rebate. Relocation or line-size upgrades add $500-$1,500 on top (Angi, HomeGuide 2026).
- 40-gallon gas: $1,200–$2,200 installed
- 50-gallon gas: $1,400–$2,600 installed
- 40-gallon electric: $900–$1,700 installed
- 80-gallon XL: $2,000–$3,500 installed
- Heat pump water heater: $3,000–$5,500 installed
| Size / Fuel | Typical Install | Notes |
|---|---|---|
| 40-gal electric | $900–$1,700 | Simplest swap, no venting |
| 40-gal gas (natural) | $1,200–$2,200 | Venting + gas line + permit |
| 50-gal gas standard | $1,400–$2,600 | Most common family size |
| 75-gal gas | $2,000–$3,200 | Large household / high demand |
| 80-gal+ XL | $2,200–$3,500 | Multi-bath homes |
| Heat pump water heater | $3,000–$5,500 | Hybrid electric, needs 700+ cu ft space |



