Can wait / Replace it now or Wait for it to fail
Replace the water heater now or wait for it to fail?
When to replace a water heater is partly a question of who sets the schedule. Replace it now if age or location worries you and you want time for quotes. Wait for it to fail if a failure would do little harm.
Updated . Sources are listed at the foot of this page.
Find your line
- If it sits where a leak would soak finished roomsReplace it nowWater damage restoration runs $1,000 to $5,000 in a 2023 survey summary, far above installation.
- If it is over 10 years old and you have time to shopReplace it nowAn ENERGY STAR sheet from 2018 suggests replacing before failure. It is promotional, so weigh it.
- If it is fairly new and nothing has changedWait for it to failNothing read gives a firm lifespan. Without a symptom, no date forces this decision.
- If it sits somewhere a leak would do little harm and money is tightWait for it to failKeep some money aside and know who you would call.
- If a plumber says yours is about to go but shows no evidenceWait for it to failAsk what they saw, then get a second opinion before replacing.
What does each timing choice really trade off?
| Replace it now | Wait for it to fail | |
|---|---|---|
| Timing | Your choice of week | Whenever it happens |
| Quotes | Time for several in writing | Possibly one, under pressure |
| 2023 install figure | Standard $850 to $1,650; tankless $1,220 to $3,500 | Same, plus possible emergency charges |
| Emergency add-on | None expected | $100 to $350 extra, or 1.5 to 3 times the rate |
| Damage risk | Removed for now | Depends where the heater sits |
Sources for this table: Install and emergency ranges, ENERGY STAR gas water heater sheet
What would change the timing?
- You smell gas or rotten eggs near it: this stops being a shopping question. Get out first, on foot. Use no switches or phones inside. From a safe spot, contact 911 and the gas utility. The gas page has more.
- It is leaking now: go to shut it off or wait and call a plumber today.
- Water near anything electrical: stay out of it, touch nothing electrical, and from somewhere dry, phone 911 or the power company.
- You hold a home warranty on it: check the terms first. In California, the Department of Insurance says the forms are not standardized.
What does replacing it cost, and what do the dates tell you?
Bob Vila's survey summary of 2023, which uses HomeAdvisor and carries a June update, gives $850 to $1,650 for a standard install and $1,220 to $3,500 for tankless. Emergency work adds a flat $100 to $350 or runs time and a half to triple the usual rate, which is the real cost of waiting if the unit fails at a bad hour. Those figures are national and getting old, and your town may differ. Three written quotes will tell you more.
On age, no official lifespan in years was confirmed. The nearest thing is ENERGY STAR's 2018 sheet on gas water heaters, which raises the question for units over 10 years old and favors replacing before failure. It is a promotional program sheet, so treat it as a prompt to ask a plumber, not a ruling.
To see what types exist before someone names one in a quote, browse the water heater section at Plumbing Supply and More, a catalog run by the same team as this site. Your plumber may prefer other brands, and you need not buy there.
Who is allowed to do the swap where you live?
The rules are local, and these examples do not travel. Boston accepts the water heater permit application only from a contractor with a valid Massachusetts trade license. San Diego lets homeowners, property owners and licensed contractors get a simple permit that covers water heater replacements, except tankless types. Phoenix says a licensed contractor swap of an electric heater needs no permit, while doing it yourself does. So ask, and check permit or no permit and state rules.
Hardness may come up in the sales talk. Ask the plumber what it means for your unit. Penn State Extension says levels below 7 grains per gallon will probably not cause major scaling. To learn your number first, there is a home hardness test guide from SoftPro, a water softener seller run by the same team as this site. A softener is a separate decision, not a condition of a new heater.
Words to use
"How old is this unit, and what do you see that makes you think it is near the end?"
"If it were to fail, what would you expect to get damaged where it sits?"
"Can you quote a like-for-like replacement, along with anything else you recommend, as separate lines?"
"Does this need a permit here, and is it included in your price?"
Also asked
- How long should a water heater last?
- No official figure in years was confirmed, so this site will not give one. ENERGY STAR's 2018 gas heater sheet raises the question at over 10 years, but it is promotional. The useful questions for a plumber are the age on the label, what they can see, and what a failure would damage.
- Is replacing a water heater before it fails a waste of money?
- It can be, since you give up remaining life. It may also spare you emergency charges and damage if the unit sits above finished space. No figure found compares the two over time. Weigh it by location, then see emergency rate or next day for the other side.
- Does a home warranty change the timing?
- It may, so read the exclusions. California's Department of Insurance says forms are not standardized, and Florida requires exclusions in boldface. No regulator figure for a typical service fee was read. See home warranty or savings before relying on one to replace an older unit.
Sources
- Water softening, Penn State Extension hardness below 7 grains and scaling
- ENERGY STAR gas water heater sheet over 10 years; replace before failure; promotional
- How Much Does a Plumber Cost? install, emergency, restoration dollars, 2023
- Boston water heater permit who may apply in Boston
- San Diego simple plumbing permit who may get one in San Diego
- Phoenix residential plan reviews Phoenix permit rule for electric heaters
- Home Protection Contracts California home warranty forms vary
- Florida home warranty overview Florida boldface exclusions