Home / Costs / Water Heater Replacement Cost
How much does water heater replacement cost?
Cost insights
$1,200 to $4,500- A standard tank replacement, installed, typically costs $1,200 to $2,500 for a 40 to 50 gallon unit.
- Tankless runs $2,000 to $4,500 installed. The unit is only part of it. Gas and venting upgrades fill the gap.
- Heat pump water heaters cost $1,800 to $3,500 installed and cut energy use hard, but need space and air volume.
- Same-size, same-fuel swaps are the cheap path. Changing fuel or location is where quotes jump.
Water heaters rarely fail on a convenient schedule, which is exactly why the prices vary so much. An emergency weekend swap costs more than a planned one, and a like-for-like tank swap costs a fraction of a tankless conversion. This guide separates the three, so you can judge the quote you are handed while standing in a puddle.
Water heater calculator
Pick the type and household size. Capacity changes price less than type and fuel do.
Water heater cost by type and size
Installed prices, like-for-like replacement in the same location.
| Type and size | Installed cost |
|---|---|
| Tank, 40 gallon | $1,100 to $2,200 |
| Tank, 50 gallon | $1,200 to $2,500 |
| Tank, 75 gallon | $1,700 to $3,200 |
| Tankless, whole house | $2,000 to $4,500 |
| Heat pump, 50 gallon | $1,800 to $3,500 |
Tank vs tankless vs heat pump
| Type | Lifespan | Running cost | Good to know |
|---|---|---|---|
| Tank | 10 to 12 years | Standard | Cheapest install, hot water runs out and reheats on standby |
| Tankless | 20 years or more | Lower | Endless hot water, higher install and maintenance for scale |
| Heat pump | 13 to 15 years | Lowest | Needs a room with air volume, cools and dehumidifies its space |
What determines the price?
Fuel and venting
Gas to gas is simple. Electric to gas, or any move that needs new venting, adds a gas line, flue work and permits. That conversion work, not the heater, explains most high tankless quotes.
Location and access
A heater in an open garage swaps fast. One in a tight attic or crawl space adds labor, pans, drains and sometimes a second pair of hands for the whole job.
Code add-ons
Expansion tanks, drain pans, seismic strapping in the West and updated shutoffs are code in many cities now. They add $150 to $500 and are not optional padding.
Timing
Emergency and weekend replacements carry premiums everywhere. If your tank is 10 years old and rumbling, a planned weekday swap is the cheapest version of this job.
Cost breakdown
| Item | Share of a typical job |
|---|---|
| Heater unit | About 40 to 50% |
| Labor | About 35 to 45% |
| Parts, permits and disposal | About 10 to 15% |
DIY vs hiring a pro
DIY
Handy homeowners do swap like-for-like electric tanks, but the job mixes 240-volt power, heavy water weight and scald risk. If any of those give you pause, this is a pro job and a cheap one as pro jobs go.
Hiring a pro
Gas work, venting changes and tankless installs belong with licensed plumbers. Ask for the expansion tank and pan in the quote, in writing, not as day-of extras.
Repair or replace: a tank over 10 years old that leaks from the tank itself is done, and no repair changes that. Younger heaters with a bad element, thermostat or valve are usually worth repairing once.
Ways to reduce the cost
- Photograph the label on your current heater. Every quote gets faster and more accurate.
- Replace proactively at 10 to 12 years instead of after the leak.
- Ask for the anode rod check at install and note the date. A $30 rod can double tank life.
- Check energy rebates for heat pump models before choosing. They are often the largest.
How we get this cost data
Our ranges are built from published US material pricing, labor rate data including US Bureau of Labor Statistics figures, and homeowner project reports. We update this page when prices move, and we show the updated date at the top. Ranges are national planning numbers. Your city and project condition will move your quote inside, or occasionally outside, the range.
Questions homeowners ask
How long does replacement take?
Two to four hours for a like-for-like tank swap. Tankless conversions take most of a day.
What size tank does a family of four need?
A 50 gallon tank is the standard answer. Heavy simultaneous use, like showers plus laundry, pushes some homes to 75 gallons or tankless.
Why is my new heater quote higher than my neighbor's?
Fuel changes, venting, location and code items, in that order, explain almost every gap between two quotes for the same heater.