Homeowners insurance vs a home warranty: what each one pays for

Homeowners insurance pays for sudden, accidental damage to your house and belongings from covered causes such as fire, wind, hail and theft, and it covers your liability to other people. A home warranty is a service contract that pays to repair or replace appliances and home systems when they break down from ordinary use. Neither one substitutes for the other: a warranty will not rebuild a house after a fire, and your insurer will not pay for a furnace that died of old age.

The confusion is understandable, because both are sold as protection for the home, both charge a fee when you use them, and real estate listings often bundle a warranty into a sale. The Federal Trade Commission is blunt about the category. In a 2023 consumer alert it calls home warranties "really service contracts" that you pay extra for, unlike a builder's or manufacturer's warranty that comes with the product.

The core difference

Insurance is built around risk: rare, costly events you cannot predict. A warranty is built around wear: breakdowns that are likely to happen eventually and cost a few hundred to a few thousand dollars each. That difference shapes everything else.

What homeowners insurance excludes about breakdowns

The standard ISO HO-3 (HO 00 03 05 11) insures the dwelling against "direct physical loss" unless the loss is excluded. The exclusions that matter here are written into the Perils Insured Against section: wear and tear, marring and deterioration; mechanical breakdown, latent defect and inherent vice; rust and other corrosion; and rot. That language is why a failed compressor, a worn-out dishwasher pump or a corroded water heater tank is not a covered loss.

The form draws a careful line, though, because a breakdown often causes damage. If the failure is sudden and releases water, the form covers the resulting damage to the building from accidental discharge or overflow of water from a plumbing, heating, air conditioning or household appliance system on the premises. It also pays to tear out and replace parts of the building when necessary to reach and repair the system. What it does not cover is "the system or appliance from which this water or steam escaped." The pipe or water heater itself is your problem; the soaked drywall and flooring around it generally is the insurer's, less your deductible.

What a home warranty covers, and the fine print

A warranty plan lists the systems and appliances it covers, with higher-priced tiers adding more items. The FTC tells shoppers to compare the up-front price against hidden costs such as per-visit service fees, and to check reimbursement caps, whether accidental damage is covered, which appliances or systems are excluded, and any cancellation restrictions. It also warns that a slow or hard-to-use claims process can defeat the purpose, and that some contracts duplicate existing coverage or cover only part of a product.

In practice, the exclusions that decide whether a warranty claim is paid are:

• Pre-existing conditions. An item that was already failing when the contract started is often excluded, which matters most for a warranty bought at a home sale.
• Maintenance. Many contracts deny a claim if the breakdown is traced to a lack of maintenance, such as a clogged condensate line or an unserviced furnace. Keep service records.
• Code and permit upgrades. If a repair triggers a requirement to bring the system to current code, the plan may not pay for the upgrade.
• Caps. A plan may pay up to a set amount for replacing an air conditioner, and you pay the balance.
• Contractor choice. Most plans send their own approved technician. You may not be allowed to hire your own.

Read the contract itself, not the brochure, and look for the dispute process and the cancellation terms. State rules differ, so if you have a problem, a complaint to your state attorney general or insurance department is a normal next step.

Where they overlap

Three overlaps cause most of the questions.

The service agreement clause. The ISO homeowners form has a condition headed "Other Insurance And Service Agreement." It says that if a covered loss is also covered by a service agreement, defined to include a "home warranty or other similar service warranty agreement, even if it is characterized as insurance," then the homeowners policy is excess over any amount payable under that agreement. In plain terms, if both could pay, the warranty goes first.

Endorsements that look like warranties. Many insurers sell equipment breakdown coverage and service line coverage as add-ons to a homeowners policy. These cover specific mechanical and electrical failures or underground lines. They fill a slice of the gap a warranty would, but they have their own limits and exclusions, so compare them rather than assuming one replaces the other. See equipment breakdown coverage: what it pays and who needs it.

Appliance damage from an outside event. If lightning or a power surge ruins your HVAC control board, that is a damage event, and insurance may respond subject to your deductible. A plain age-related failure is a warranty event. When it is unclear which it was, the technician's written diagnosis often decides the claim.

Five events, two contracts

These outcomes are typical under the standard wording; your own policy and warranty contract control. They are examples, not guarantees.

Do you need one

There is an honest case on each side, and the FTC leans toward caution.

The case for buying: you own an older home with original systems, you would struggle to pay a $3,000 replacement on short notice, and a plan with reasonable caps and a good complaint record turns an unpredictable bill into a predictable one. A seller-paid plan for the first year of ownership costs you little, though pre-existing conditions are often excluded, so read what it leaves out.

The case against: you pay for coverage whether or not anything breaks, service fees apply every time, exclusions and caps can leave you paying much of the bill, and many readers who commented on the FTC's alert described denied or delayed claims, accounts the agency did not verify. The FTC's article on new-home warranties adds that if repairs are cheap, the extra cost may not be worthwhile. A dedicated repair fund, a manufacturer's warranty on newer items and, for a newly built home, the builder's warranty may do the same job. The FTC describes builder coverage as typically running one year on most components, two years on HVAC, plumbing and electrical systems, and up to ten years for major structural defects.

Before you buy a warranty

1. List what you actually want covered and the age of each item. A plan that excludes your oldest system does little for you.
2. Get the full contract and read the exclusions, caps, service fee, and the part that says what happens if you do not maintain the items.
3. Check whether you already have equipment breakdown coverage or service line coverage on your homeowners policy. Your declarations page lists endorsements.
4. Search the company name with "complaint" and check your state regulator's complaint records.
5. Do not pay for a warranty and skip maintenance. Under both contracts, a loss traced to poor maintenance can be denied. See home maintenance that keeps you insurable.

Key takeaways

• Homeowners insurance covers sudden, accidental damage and liability; a home warranty is a service contract for breakdowns from ordinary wear.
• The standard HO-3 excludes wear and tear and mechanical breakdown, but pays for resulting water damage to the building, not the failed appliance itself.
• The ISO form treats a home warranty as a service agreement and makes your homeowners policy excess over it where both apply.
• Warranty value depends on the contract's exclusions, caps, service fees and claims record, so read the whole contract before paying.
• A mortgage lender requires insurance but not a warranty. Whether to buy one is your call, and an equipment breakdown endorsement is a related option.