The average HVAC replacement runs $5,000 to $12,000. That number is probably why you're reading this. A home warranty promises to blunt exactly that kind of gut-punch, and roughly 6 million American households buy one every year. But the claims-denied rate at some of the largest providers runs above 30 percent, according to complaints filed with state insurance regulators and consumer advocacy groups—which means a lot of people are paying annual premiums and still writing the big check themselves when something breaks.
The gap between what a home warranty sounds like it covers and what it actually covers comes down to a few pages of contract language most buyers never read until the repairman is already in the driveway. This article works through those pages for you: what a standard plan includes, where the coverage stops, which add-ons are worth considering, and how to spot a weak contract before you sign it.
The Core Coverage: Systems and Appliances, Defined Narrowly
Every home warranty plan divides coverage into two buckets: home systems and home appliances. You can usually buy one, the other, or a combined plan. Understanding what each bucket actually contains—at the component level—is where most buyers go wrong.
Home Systems Coverage
A systems plan typically covers the mechanical and electrical infrastructure that runs through the house. The usual inclusions are:
- Heating: Forced-air furnaces, heat pumps, ductwork (sometimes). Boilers and radiant systems are often excluded from base plans or require an add-on.
- Cooling: Central air conditioning, including the compressor, fan motors, and refrigerant recharge—though some contracts cap refrigerant costs at a fixed dollar amount, say $10 per pound, while actual R-410A can run $25–$50 per pound at current market prices.
- Plumbing: Leaks and breaks in supply lines, drain lines, and interior valves. Stoppages are usually covered. Outdoor lines and the main sewer lateral often are not.
- Electrical: Wiring, panels, outlets, switches. Fixtures (ceiling fans, light fixtures) are hit or miss depending on the plan.
- Water heater: Both tank and tankless units, though tankless heaters sometimes require an upgrade rider.
Appliance Coverage
Appliance plans cover the machines in the kitchen and laundry room. Standard inclusions:
- Refrigerator (compressor, ice maker sometimes excluded)
- Dishwasher
- Oven, range, and cooktop
- Built-in microwave
- Washer and dryer
- Garbage disposal
Portable appliances—window AC units, freestanding freezers, standalone dehumidifiers—are almost never included without a specific rider. Neither is a wine cooler, no matter how much you spent on it.
What a Home Warranty Will Not Cover: The Exclusions That Actually Matter
The exclusions section of a home warranty contract is where the real policy lives. These are not obscure legal technicalities; they're the reasons most claims get denied. Read them before you sign, not after.
Pre-existing Conditions
If the system or appliance was already malfunctioning when your coverage started, the claim will be denied. Some providers send an inspector at the start of coverage. Others rely on technician reports at the time of the claim—if the technician notes rust, corrosion, or visible wear consistent with long-term neglect, the provider can use that report to deny coverage as a pre-existing condition. This is the single most common source of disputes.
Improper Installation or Modification
If a previous owner installed a non-standard water heater, ran ductwork incorrectly, or added a room addition with amateur electrical work, any failure in those systems is typically excluded. The contract covers systems installed and maintained to manufacturer specifications and local code. A flip house with DIY plumbing is a liability minefield for warranty claims.
Code Upgrades
This one surprises people. If your HVAC fails and the replacement requires bringing the installation up to current building code—new refrigerant lines, a larger return air duct, an updated electrical disconnect—those upgrade costs are usually your responsibility even if the unit itself is covered. Some providers offer a code-compliance add-on for an extra fee. It's often worth it on older homes.
Known Maintenance Failures
Contracts require that you maintain covered systems. Skipping annual furnace tune-ups, never changing HVAC filters, or ignoring a slow drain until it becomes a full blockage can all give the provider grounds to deny a claim. Keep records: receipts from HVAC service appointments, notes from plumbers, even photos of replaced filters with dates written on them.
Cosmetic Damage and Aesthetics
A dishwasher that runs perfectly but has a dented door is not covered. Neither is a refrigerator with a cracked ice tray, a stove with a chipped enamel surface, or a bathroom faucet that drips but otherwise functions. The contract covers functional failure, not appearance.
Structural Components
Foundations, walls, windows, roofs (usually), and flooring are not home warranty territory—those belong to homeowners insurance or a separate structural warranty. Some providers offer a roof-leak add-on, but read it carefully: most cover only the leak repair itself, not the underlying cause, and many cap the benefit at $500 to $1,500 per incident.
Dollar Caps and Trade Call Fees: The Numbers That Shape Your Real Cost
Even when a claim is approved, the payout is not necessarily the full cost of repair or replacement. Two financial mechanics determine how much you actually get: per-item caps and trade call fees.
Per-Item and Per-Year Caps
Most contracts cap how much they'll pay for any single covered system. Common limits in the industry:
- HVAC system: $1,500 to $3,000 (some premium plans go to $5,000)
- Water heater: $500 to $1,000
- Electrical system: $500 to $2,000
- Plumbing: $500 per incident, or $2,000 aggregate per year
A new central air conditioning system in a mid-size American home costs $4,000 to $7,000 installed. If your contract caps AC coverage at $1,500, you're covering the rest out of pocket. That math changes the value proposition significantly.
Some higher-tier plans from providers like American Home Shield's ShieldPlatinum or Choice Home Warranty's Total Plan advertise unlimited caps on select systems—but read the fine print on what qualifies as a covered failure versus a code upgrade or modification exclusion, because those carve-outs can reduce the effective payout even under a nominally uncapped plan.
Trade Call Fees (Service Fees)
Every time you file a claim, you pay a trade call fee—typically $75 to $125 per visit—before the provider will dispatch a technician. This fee is separate from your annual premium and is not refundable if your claim is denied. If the technician comes out, assesses the problem, and the provider decides it's a pre-existing condition or a maintenance failure, you've paid the fee and received nothing.
Some plans let you choose your trade call fee amount when you sign up: a lower fee means a higher annual premium, and vice versa. If you have a new home with little expected trouble, a higher fee and lower premium often saves money. If you're buying an older home with aging systems, the math usually favors the lower fee.
Replacement vs. Repair Decisions
Providers almost always have the right to repair rather than replace, even when replacement would be the more practical solution. If your 18-year-old HVAC can be patched for $400, the provider will patch it—even if you know it will fail again in a year. You can ask for a cash-out settlement instead, but the cash offer is typically lower than actual replacement cost, sometimes significantly so.
Add-Ons Worth Buying and Add-Ons That Aren't
Most home warranty providers sell optional riders that extend coverage to items not included in the base plan. Some of these are genuinely valuable; others are priced to generate profit, not protection.
Add-Ons That Often Make Sense
Pool and spa equipment: Pumps, motors, and heaters are expensive. If you have a pool, this rider is usually worth the $100–$200 annual cost, especially in regions where freeze damage or heavy use accelerates wear. Check whether the contract includes pool plumbing and the heater ignition system, or just the pump motor.
Septic system: If you're not on a municipal sewer, your septic pump and its components can fail expensively. A septic rider typically runs $50–$100 per year and can cover pump failure, the float switch, and the control board. It usually does not cover the drain field itself—that's a five-figure repair that nothing in a home warranty covers.
Well pump: Rural homeowners should look at this. A submersible well pump replacement can run $1,000 to $2,500 including labor. The rider is often $50–$100 per year and covers pump and motor failure but not the well itself or water quality issues.
Second refrigerator or standalone freezer: If your garage refrigerator is more than ten years old and holds $800 worth of frozen meat, a $50 add-on is defensible arithmetic.
Add-Ons That Rarely Pay Off
Roof leak coverage: The caps are too low (usually $500–$1,500) and the exclusions are too many (pre-existing wear, flashing, gutters, skylights) to make this worthwhile for most homeowners. A dedicated roofing maintenance fund is a better use of the same dollars.
Electronics protection: Some providers have added TV, laptop, and appliance coverage riders. These overlap with manufacturer warranties, credit card purchase protection, and renter's or homeowner's insurance—meaning you may already have coverage you're not using. Don't pay twice.
How to Read a Home Warranty Contract Before You Sign
The contract is the policy. The brochure, the sales call, the online comparison chart—none of that is binding. Here's what to look for in the actual document.
The Definitions Section
Every contract defines key terms, and those definitions do real work. Look up how the contract defines "normal wear and tear," "mechanical failure," "proper maintenance," and "pre-existing condition." A contract that defines pre-existing condition as "any condition that a home inspection would have revealed" is far more restrictive than one that defines it as "a condition the homeowner had knowledge of." The difference is significant for anyone buying a house without a perfect inspection report.
The Covered Components List
Don't rely on section headings like "Plumbing System Covered." Go to the specific components list. Does plumbing coverage include the pressure regulator? The main shutoff valve? The icemaker water line? Each of those is a separate repair job that ranges from $150 to $600.
The Contractor Selection Clause
Most home warranty contracts require you to use their network of approved contractors. You cannot call your own plumber and submit for reimbursement (some plans offer this option at a lower reimbursement rate, but it's not the norm). Before buying, check the provider's contractor network in your specific ZIP code. A provider with thin coverage in rural areas may have response times measured in days, not hours—a real problem when you have no heat in January.
The Cancellation and Renewal Terms
Look for: how much you get back if you cancel mid-year (most take an administrative fee of $50–$75 off the prorated refund), whether the provider can cancel your coverage if you file too many claims, and whether renewal terms can change. Some contracts auto-renew at a higher premium without requiring your explicit approval.
Home Warranty vs. Homeowners Insurance: What Each One Is For
These two products are not interchangeable, and confusing them leads to coverage gaps. Homeowners insurance covers sudden, accidental damage: a pipe that bursts because a freeze cracked it, fire damage to your HVAC, a tree falling on your roof. A home warranty covers gradual mechanical failure from use: that same pipe corroding over fifteen years and finally failing, or your furnace heat exchanger cracking after a decade of cycles.
The practical implication: if your water heater fails because a pipe connected to it froze and burst in a sudden cold snap, that may be an insurance claim. If it fails because the heating element burned out from years of use, that's a warranty claim. The line isn't always clean, and both providers may initially deny the claim and point at the other product—which is why keeping documentation of what happened and when matters.
There are also things neither product covers well. Mold remediation is often excluded from both. Pest damage (termites, rodents chewing through wiring) sits in a gray zone—homeowners insurance typically excludes it, and home warranties exclude it almost universally. That's a separate pest control contract or out-of-pocket cost. Foundation failure is another gap: structural damage is typically a homeowners insurance question, but only if it results from a covered peril. Settling and subsidence—the slow, grinding failure of a foundation over time—is excluded by virtually every homeowners policy and every home warranty.
If your goal is protecting against catastrophic, sudden loss, homeowners insurance is the product. If your goal is managing the predictable cost of aging mechanical systems, a home warranty addresses that—imperfectly, but meaningfully if the contract is solid and the systems in question are genuinely aging.
When a Home Warranty Is Worth It—and When It Isn't
The honest answer depends on three things: the age of your home's systems, your liquid savings, and your tolerance for negotiating with a claims department.
A home warranty is most likely to pay off when you're buying a home with systems that are 8–15 years old—old enough that failure is plausible within the warranty period, but not so old that the provider can credibly call everything a pre-existing condition. A 10-year-old HVAC, a 12-year-old water heater, and an 8-year-old dishwasher represent real actuarial risk. The warranty is pricing that risk; sometimes the pricing is in your favor.
It's least likely to pay off on a newly built home. New construction typically comes with a builder's warranty on systems and appliances (one year on workmanship, two years on mechanical systems, ten years on structural defects under most state laws), plus manufacturer warranties on each appliance. Layering a home warranty on top of that is redundant coverage for years 1–2 and real coverage for years 3–10—at which point you might be better off self-insuring through a dedicated savings fund.
The scenario where a home warranty consistently underperforms: buyers who purchase it expecting peace of mind and then feel ambushed when a claim is denied. The product works best for people who read the contract first, keep maintenance records, and understand that it's a negotiation tool, not a guarantee. When a claim is borderline, documented maintenance history is your best leverage. When a claim is denied, many states allow you to file a complaint with the Department of Insurance—home warranty contracts are regulated as service contracts in most states, with specific consumer protections that providers must honor.
The providers with the best reputations for actually paying claims—based on consumer reporting and state complaint ratios—have historically included American Home Shield (now part of Frontdoor) for breadth of coverage, and AFC Home Club for contractor flexibility. That landscape changes, and complaint ratios shift year to year, so checking your state's insurance department complaint index for the specific provider you're considering is more reliable than any review site.
Frequently Asked Questions
Does a home warranty cover roof replacement?
Standard home warranty plans do not cover roof replacement. Some providers sell a roof-leak add-on, but it typically covers only the repair of an active leak—not the underlying cause, not flashing, not gutters, and not full replacement. The benefit cap is usually $500 to $1,500. For roof coverage, a dedicated roofing inspection and maintenance fund is more reliable.
Are pre-existing conditions covered by a home warranty?
No. Pre-existing conditions are excluded by nearly every home warranty contract. The challenge is that providers often don't inspect systems at the start of coverage—they rely on the technician's report at claim time. If that report notes rust, corrosion, or wear consistent with long-term neglect, the provider can deny the claim on pre-existing grounds. This is the most common reason for claim denials.
Does a home warranty cover plumbing stoppages?
Most home warranty plans cover drain stoppages in lines that are accessible from inside the home. Main sewer line stoppages and outdoor lateral lines are frequently excluded from base plans but available as add-ons. Check whether the contract covers the cost of accessing the line (breaking concrete, for example) in addition to the repair itself—many do not.
Can I use my own contractor with a home warranty?
Most home warranty contracts require you to use their approved contractor network and call the provider before arranging any repair. If you use an outside contractor without authorization, the claim is typically denied. A few providers—mainly higher-tier plans—offer a reimbursement option if no network contractor is available in your area, but reimbursement rates are often lower than actual costs.
Does a home warranty cover a water heater?
Yes, water heaters are covered under most home warranty plans, usually as part of the systems coverage. Both tank and tankless units are generally included, though tankless heaters sometimes require an upgrade rider. Coverage applies to mechanical failure from normal use—if the unit failed due to neglect, sediment buildup from skipped flushes, or improper installation, the claim can be denied.
What happens if the home warranty company wants to repair instead of replace?
Providers have the contractual right to repair rather than replace, even when the item is old and replacement would be more practical. If repair is chosen, you can ask for a cash-out option instead—but the cash offer is typically below actual replacement cost. Negotiating is possible, especially if you can document that repair costs have been repeated and the item is at end of life, but the provider is not obligated to replace.
Is a home warranty worth it for a new home?
Probably not for the first two years. New construction comes with a builder's warranty covering mechanical systems (typically two years) and structural defects (typically ten years), plus individual manufacturer warranties on appliances. Paying for a home warranty on top of that creates redundant coverage. After year three, when builder warranties expire, the calculation changes and a warranty becomes more defensible.
Does a home warranty cover mold or pest damage?
No. Mold remediation and pest damage—including termite or rodent damage to wiring or insulation—are excluded from virtually every home warranty contract. Mold resulting from a covered plumbing leak may get the leak repaired, but not the mold itself. Pest control is a separate product category entirely.