What Does a Home Warranty Cover? (And What It Doesn't)

A home warranty is a service contract that pays to repair or replace home systems and appliances when they break down from normal wear and tear. It is not insurance, and it does not cover everything in your house. The gap between what buyers assume is covered and what the contract actually says is the single biggest source of frustration with these plans. This guide walks through what a typical plan covers, what it excludes, and how to check the fine print before you sign.

First, what a home warranty actually is

A home warranty is an annual service contract with a warranty company. You pay a yearly or monthly premium, and when a covered item fails, you file a claim, pay a service call fee (typically $75 to $150 per visit), and the company sends a contracted technician to repair or replace the item, subject to the terms and dollar limits in your contract.

It is worth repeating: this is not an insurance policy. Homeowners insurance covers sudden, accidental damage to your home and belongings from events like fire, storms, or theft. A home warranty covers mechanical breakdown from age and normal use, which insurance specifically excludes. The two products cover different risks and are regulated differently. If you are unclear on the distinction, read our guide on home warranties vs. homeowners insurance before going further.

Systems a home warranty typically covers

Most plans cover the core mechanical systems that keep a house running. Exact coverage varies by company and plan tier, but the usual list includes:

• Heating and air conditioning (HVAC): furnaces, heat pumps, and central air conditioning units. This is the coverage most people buy a warranty for, since HVAC replacements are among the most expensive repairs a homeowner faces.
• Electrical system: interior wiring, panels, breakers, outlets, and switches. Usually not light fixtures themselves.
• Plumbing system: interior water, drain, and gas lines, plus stoppages within the home's perimeter. Faucets and toilet mechanisms are sometimes included, sometimes an upgrade.
• Water heater: standard tank units are widely covered; tankless units are often covered but sometimes carry lower caps or require an upgraded plan.

Note the pattern: coverage generally applies to components located inside the home's foundation and walls. Lines running outside the perimeter, such as the water main to the street or the sewer lateral, are commonly excluded or sold as separate add-ons.

Appliances a home warranty typically covers

Appliance coverage centers on the major kitchen and laundry units:

• Refrigerator: the primary kitchen unit. Ice makers and water dispensers may be excluded or limited. A second fridge in the garage usually requires an add-on.
• Oven, range, and cooktop: built-in and freestanding units are typically covered.
• Dishwasher: almost always on the covered list.
• Washer and dryer: covered on most combo plans, though some companies sell laundry coverage as an optional pairing.

Built-in microwaves and garbage disposals commonly appear on appliance plans as well. Countertop appliances, small electrics, and anything portable are not covered by any standard plan.

Plan tiers: systems, appliances, or combo

Most companies structure their offerings in three tiers, and knowing which tier you are looking at prevents a lot of confusion:

Combo plans cost more but close the gap where a systems-only plan leaves your fifteen-year-old refrigerator exposed, or vice versa. Match the tier to the age of what you actually own, not to the marketing page.

Optional add-ons

Standard plans stop at the common equipment list. Anything unusual about your property typically requires a rider at extra cost:

• Pool and spa equipment: pumps, heaters, and motors. Structural elements like the pool shell and liner are excluded even with the rider.
• Well pump: essential if your water comes from a well, since no base plan includes it.
• Septic system: usually the pump and sometimes a pumping service, not the tank or leach field.
• Roof-leak coverage: a limited rider for patching leaks over living areas. It is repair-only with low caps, not roof replacement, and often excludes flat roofs, patios, and pre-existing leaks.

Other common riders include second refrigerators, stand-alone freezers, sump pumps, and water softeners. Price each add-on against the realistic repair cost of that item before bundling it in.

What a home warranty does not cover

This is where most disputes happen. The exclusions below appear in nearly every contract, and they are the most common reasons claims get denied:

• Pre-existing conditions: if the item was already failing before your coverage started, it is not covered. Some companies define this as any condition a visual inspection or simple test would have detected, which gives the technician wide latitude on older equipment.
• Improper installation or modification: equipment that was not installed to manufacturer specifications, was sized wrong, or was modified can be denied even if the current failure seems unrelated.
• Lack of maintenance: a furnace with a clogged filter or an AC unit that has never been serviced can be denied for neglect. The burden of showing maintenance usually falls on you.
• Code violations and permits: if a repair requires bringing the system up to current code, the cost of the code upgrade is typically on you, and some contracts deny coverage entirely when the existing installation violates code.
• Cosmetic damage: dents, scratches, discoloration, knobs, handles, racks, and shelves. If it does not affect function, it is not covered.
• Commercial-grade equipment: professional-style ranges, oversized water heaters, and other commercial or semi-commercial units are excluded from most residential contracts or capped at a fraction of their value.
• Secondary damage: the warranty covers the failed component, not the drywall the leak ruined or the food that spoiled. Consequential damage is an insurance question, not a warranty one.

Coverage caps: the exclusion hiding in plain sight

Even a fully approved claim has a ceiling. Contracts set dollar limits per item and per contract term, and they matter more than the covered-items list. Appliance caps often run $1,500 to $3,000 per item, and system caps vary widely, with HVAC caps sometimes well below the real cost of a full replacement. If your air conditioner replacement runs $8,000 and your cap is $2,500, the warranty pays its cap and you pay the rest. Caps on add-ons like roof leaks tend to be lower still. Always find the limits-of-liability table in the sample contract and compare it against real replacement costs in your area.

How to protect yourself before you buy

1. Read the sample contract, not the brochure. Every reputable company posts a sample contract online. The covered-items list, the exclusions, and the caps all live there. If a company will not show you the full contract before purchase, walk away.
2. Check the caps against your actual equipment. Price a replacement for your specific HVAC system and water heater, then compare those numbers to the contract limits. A plan with generous-sounding coverage and low caps can be worth less than a cheaper plan with higher limits.
3. Document your maintenance. Keep receipts for HVAC tune-ups, filter purchases, and water heater flushes. Dated photos of equipment in working order when coverage starts also help. This paper trail is your best defense against a lack-of-maintenance or pre-existing-condition denial.
4. Understand the claims process before you need it. Know the service fee, how contractors are assigned, and the timeline for approvals. Our guide on how home warranty claims work covers the process step by step.

A home warranty can be a reasonable way to convert unpredictable repair bills into a predictable annual cost, but only if the contract you buy actually matches your home. For help comparing contracts on caps, exclusions, and service terms, see our guide on choosing a home warranty company.

Frequently asked questions

Does a home warranty cover the roof?

Not in a standard plan. Some companies offer a limited roof-leak rider that pays for patching leaks over occupied living space, usually with a low cap and exclusions for flat roofs, gutters, and pre-existing leaks. No home warranty pays for roof replacement.

Does a home warranty cover pre-existing conditions?

No. Every standard contract excludes conditions that existed before coverage began. Definitions vary, and some contracts count anything a visual inspection would have caught. A recent home inspection report showing the item in working order is useful evidence if a claim is questioned.

Will a home warranty replace my old air conditioner?

Only if it fails from normal wear during the coverage term, the failure is not excluded, and the cost falls within your contract's cap. If replacement exceeds the cap, the company pays up to the limit and you cover the difference. Age alone does not disqualify a unit, but poor maintenance records can.

Is a home warranty the same as homeowners insurance?

No. A home warranty is a service contract covering mechanical breakdown of systems and appliances from normal use. Homeowners insurance covers damage to your home and belongings from events like fire, wind, and theft, and is required by most mortgage lenders. Most homeowners who carry a warranty carry both, because neither product covers the other's territory.