THE SHORT VERSION
- Homeowners insurance usually pays for the water damage, not the heater. The standard HO-3 policy form covers sudden, accidental discharge from an appliance but not “the system or appliance from which this water or steam escaped,” and it excludes wear and tear, corrosion and mechanical breakdown.
- A slow leak you ignored is usually not covered at all. Insurers treat long-term seepage as a maintenance problem.
- A home warranty is a service contract, not insurance. It may repair or replace a worn-out heater, but you pay a fee per visit ($0–$350 in the sample contracts we read), payouts are limited, and permits, code fixes and venting are often excluded or capped at $250.
- The manufacturer’s warranty covers a leaking tank or a failed part, not the labor. Labor coverage is short (1–3 years on A.O. Smith tanks) and water damage is excluded.
- After a failure: photograph everything, call your insurer for the damage, keep the old heater until the claim is settled, and call the home warranty company before hiring anyone yourself.
The short answer: insurance for the damage, warranties for the heater
When a tank splits and floods a basement, two bills arrive: cleaning up and repairing the house, and replacing the heater. Homeowners insurance is built for the first. A home warranty and the manufacturer’s warranty are built for the second, each with its own limits. Nobody covers a heater that simply wore out and leaked slowly for months.
| What happened | Homeowners insurance | Home warranty | Manufacturer warranty |
|---|---|---|---|
| Tank bursts, water soaks drywall and carpet | Damage to the house and belongings, minus deductible | The heater, within plan limits | The tank, if within the tank term |
| Slow drip from the tank for weeks, now rot and mold | Usually not; seepage is a maintenance issue | The heater, if not a known pre-existing problem | The tank, if within term |
| Gas valve or element fails; no leak | Not covered (mechanical breakdown) | Repair, within plan limits | The part, if within term |
| New heater needs an expansion tank, pan or new vent to pass code | Not covered | Often excluded or capped at $250 | Not covered |
| Fire, lightning or a falling tree destroys the heater | Covered as part of the house | Usually excluded | Excluded |
Sources: ISO HO 00 03 homeowners form (sample hosted by the Insurance Information Institute); Triple-I; Travelers; sample contracts from Assurant, American Home Shield, First American and 2-10; A.O. Smith and Navien warranties. Policies and contracts vary by company and state.
Homeowners insurance pays for sudden water damage, not the heater
The Insurance Information Institute (Triple-I) calls the HO-3 “the most common homeowners policy in the United States.” The standard HO-3 form written by Insurance Services Office (ISO), in the sample edition Triple-I hosts, shows how a water heater is treated:
- Covered: loss from “accidental discharge or overflow of water or steam from within a plumbing, heating, air conditioning or automatic fire protective sprinkler system or from within a household appliance.” It even pays to tear out and replace part of the building when that’s necessary to repair the leaking system.
- Not covered: “loss to the system or appliance from which this water or steam escaped.” The heater itself is yours to replace.
- Excluded causes: “wear and tear, marring, deterioration,” “mechanical breakdown,” and “smog, rust or other corrosion.” A tank that rusts through is the classic example, though the water damage it causes can still be covered.
- Freezing: leaks caused by frozen plumbing or appliances are covered only if you used reasonable care to keep the heat on, or shut off the water and drained the system.
Timing matters. Travelers explains that a sudden appliance leak is typically covered, “but if you ignore a known leak or other long-standing problem, there may not be coverage for your claim.” Triple-I calls seepage “a maintenance issue” that insurance doesn’t cover. If you notice a drip, fixing it promptly protects both the floor and the claim; see water heater leaking.
Source: Triple-I, Facts + Statistics: Homeowners and renters insurance, from ISO data for HO-2, HO-3 and HO-5 policies. All causes of water damage, not only water heaters.
Compare that average with your deductible and with the heater’s price: Home Depot’s published range for an installed tank is $1,600–$2,400. A burst tank in a finished basement can easily exceed a $1,000 deductible; a puddle on a garage floor probably won’t. Ask your agent whether a small claim would affect your premium before you file.
Equipment breakdown coverage: an add-on some insurers sell
Some insurers sell an endorsement that covers the heater itself when it fails suddenly. Massachusetts insurer Safety lists “conventional and solar water heaters” among the systems in its Home Systems Protection coverage, with a $100,000 limit and a $1,000 deductible, and notes that “traditional homeowners policies exclude mechanical breakdown.”
Read the exclusions. GEICO explains that equipment breakdown coverage applies only to sudden mechanical or electrical failures and “does not cover damage that results from neglect, poor upkeep, or normal wear and tear.” A heater whose tank slowly corrodes through is a wear-and-tear failure, so a $1,000 deductible may leave little benefit on a heater that costs $1,600–$2,400 installed. Ask your agent for the endorsement wording before you buy it.
Home warranties: service contracts with fees, limits and exclusions
A home warranty is a service contract, regulated by states rather than as insurance in many places. Texas, for example, licenses “residential service companies” through its Department of Licensing and Regulation and says their contracts cover appliance and system repairs caused by “a defect in materials or workmanship, or damage caused by normal wear.” That is the opposite of homeowners insurance: wear is the point. They are often bundled into a home sale.
We read four current sample contracts. All four cover gas and electric tank heaters and tankless units. The differences are in the fine print:
| Contract | Fee per service request | Permits and code fixes | Sediment, rust and wear | Other catches |
|---|---|---|---|---|
| Assurant (sample plan agreement, 2025) | $75, $100 or $125 | $250 code violations plus $250 permits, first plan term only ($1,000 on Premium) | Excludes failures from scale or mineral deposit build-up | Pays at most the lesser of current replacement value or the item’s original purchase price |
| American Home Shield (California sample, rev. 12/22) | Trade service call fee per request (amount on your agreement) | Up to $1,000 for code fixes, permits and modifications on its top plan; code upgrades otherwise excluded | Covers insufficient maintenance, rust, corrosion and sediment | Excludes flues and venting; no reimbursement without prior approval; may offer cash instead |
| First American (water heater coverage page) | Not stated on the page | $250 code violations and $250 per permit, with its First Class Upgrade | Not stated on the page | Flues and vents not covered; haul-away included with the upgrade |
| 2-10 Home Buyers Warranty (sample, 2025) | $0–$350 | Not covered, “even if required by Applicable Law” | Covers normal wear, insufficient maintenance, rust, corrosion and sediment | 30-day waiting period at the start of a plan |
Sources: each company’s published sample contract or coverage page, read October 5, 2026. Fees and limits are those printed in the samples; your contract’s declarations page sets yours.
The clauses that decide what you pay
- Code upgrades. A replacement heater often needs work the old one didn’t have: an expansion tank, a pan, new venting, earthquake straps. The 2-10 sample excludes all of it; American Home Shield excludes venting and, except on its top plan, code upgrades. See code requirements for what inspectors look for and installation cost factors for what those items cost.
- Cash instead of a heater. American Home Shield may offer cash in lieu of replacement, based on what it would pay, which its contract says is “substantially less than retail cost.” Assurant pays no more than the item’s original purchase price.
- Manufacturer first. American Home Shield won’t repair malfunctions covered by a manufacturer’s warranty, and Assurant excludes defects subject to one. Expect to be sent to the manufacturer for parts on a newer heater.
- Use their contractor. American Home Shield chooses the service contractor and “will not reimburse for services performed without its prior approval.” Hiring your own plumber in a hurry can forfeit the claim.
- No property damage. The American Home Shield and 2-10 samples exclude damage the failure causes to the house or belongings. That part goes to your insurer.
The manufacturer’s warranty: a tank or a part, rarely the labor
Every new heater comes with a limited warranty from its maker. It replaces a tank that leaks, or a part that fails, within its term. Most of what a replacement costs, though, is labor and installation, and that is where these warranties are thin.
- A.O. Smith residential tanks (retailer warranty, 2018 edition): 6 to 12 years on the tank and parts by tier, but 1 to 3 years of labor. Its standard terms make the owner pay for removal, installation, materials, permits and shipping, it isn’t transferable to the next owner, and the maker “shall not be liable for any water damage.”
- Navien NPE-2 tankless units: 15 years on the heat exchanger, 5 on parts and 1 on labor for standard residential use. Labor is paid only with Navien’s prior written approval and under its schedule of labor allowances. The warranty is void if a non-licensed installer put the unit in, or if it was bought online from an unauthorized seller.
Coverage also depends on installation: A.O. Smith voids its warranty if the heater wasn’t installed to local code or its instructions, or sits in a closed system without thermal expansion control. Details by brand, and how to register, are in water heater warranties. To check whether yours is still in term, read the serial number; see how old is my water heater.
A worked example: a 9-year-old tank bursts
Say a 50-gallon gas tank with a 6-year warranty splits on a Sunday and soaks a finished basement. The homeowner has an HO-3 policy with a $1,000 deductible and a home warranty with a $100 service fee. This is a hypothetical; the shares follow the contract language above.
Insurance: the basement
Water cleanup, drywall, carpet and damaged belongings fall under the policy’s accidental-discharge coverage, minus the $1,000 deductible. The heater itself is excluded.
Manufacturer: nothing
The 6-year tank term ended three years ago. Had it been in term, the maker would supply a tank, and the owner would still pay installation.
Home warranty: the heater, within limits
The warranty company sends its contractor, collects the $100 fee and replaces the heater within its limits. If the replacement needs an expansion tank, a drain pan or a vent change to pass inspection, a plan that excludes code upgrades leaves those to the owner.
Without a home warranty
The owner pays for the heater and installation, about $1,600–$2,400 on Home Depot’s published range, plus any code items. See water heater replacement cost.
After a failure: the order that protects every claim
The NAIC says to notify your insurer right away, and that the time allowed to report a claim varies by state. A.O. Smith’s warranty adds a reason to keep the old heater: anyone, including an insurance carrier, who intends to claim against the company for property damage must keep the heater as it was, and failing to do so “may result in denial of a claim.”
Keep these together
- Photos and video from before the cleanup
- The rating plate photo: model, serial number and date code
- Receipts for fans, an emergency plumber and any hotel nights
- Claim numbers, names and dates for the insurer and the home warranty company
- The written quote or work order for the replacement
If the home warranty company’s offer won’t cover the code items your inspector requires, get a written quote for the full job and compare. Our quote comparison guide shows how to read one line by line.
Common questions
Does homeowners insurance cover a water heater replacement?
Usually not. The standard HO-3 form excludes the appliance the water escaped from, and excludes wear and tear and corrosion. It typically pays for the sudden water damage a burst heater causes, minus your deductible.
Does homeowners insurance cover a leaking water heater?
The damage from a sudden leak, usually yes. Damage from a slow leak you knew about or ignored, often no; Travelers and Triple-I both describe long-term seepage as a maintenance issue.
Is a home warranty worth it for a water heater?
It depends on the contract and on your heater’s age. Add the yearly price and the service fee, then compare it with a $1,600–$2,400 installed tank, and check whether permits, code upgrades and venting are excluded. Those are often the costs that surprise owners.
Will a home warranty pay for code upgrades when it replaces my water heater?
Often only partly. The Assurant and First American terms we read pay $250 for code violations and $250 for permits; American Home Shield pays up to $1,000 only on its top plan; the 2-10 sample pays nothing for permits or code corrections.
Does the manufacturer’s warranty pay for installation?
Usually only for a short time. A.O. Smith’s tank warranty covers 1 to 3 years of labor depending on the tier; after that you pay to remove and install the replacement tank it supplies. Navien’s tankless labor term is 1 year.
Should I file an insurance claim for a small water heater leak?
Compare the damage with your deductible first. If repairs are close to the deductible, a claim pays little. Ask your agent how claims affect your premium, and report promptly if you do file, since deadlines vary by state.
Can I hire my own plumber and send the bill to my home warranty?
Check first. American Home Shield’s contract says it won’t reimburse service performed without its prior approval. Assurant waives its service fee only when it arranges with you to use your own licensed technician.
Sources
Sources checked October 5, 2026. Prices, codes and rebates change. Check current details with your installer and local permit office.
- Homeowners 3 special form, HO 00 03 10 00 (sample policy) ↗ · Insurance Services Office, hosted by the Insurance Information Institute
- Am I covered? (homeowners insurance questions) ↗ · Insurance Information Institute (Triple-I)
- Facts + Statistics: Homeowners and renters insurance ↗ · Insurance Information Institute (Triple-I)
- Answers to 5 common insurance questions about home water damage ↗ · Travelers
- What you need to know when filing a homeowners claim (April 2022) ↗ · National Association of Insurance Commissioners
- Home Systems Protection coverage ↗ · Safety Insurance
- Equipment breakdown coverage for homeowners ↗ · GEICO
- What should I know about residential service contracts? (CP Form-211, Oct. 2022) ↗ · Texas Department of Licensing and Regulation
- Sample plan agreement, national (ASHW0001S-0825) ↗ · Assurant Home Warranty
- Consumer home warranty sample contract, California (rev. 12/22) ↗ · American Home Shield
- Water heater coverage details ↗ · First American Home Warranty
- Sample home warranty plan agreement 2DNA25 (2025) ↗ · 2-10 Home Buyers Warranty
- Residential water heater limited warranty 100286376 (retailer copy, 2018) ↗ · A.O. Smith
- NPE-2 user’s information manual, including limited warranty ↗ · Navien
- Cost to replace a water heater (installed ranges) ↗ · Home Depot