You close on your first house. Two weeks later, the water heater stops working. You call a plumber. He tells you the tank is rusted through — $1,200 for a replacement.
If you bought a home warranty before closing, you might think: “Great, this is covered.” But the warranty company might say: “The rust is a pre-existing condition. Claim denied.”
This scenario plays out thousands of times a year. Home warranties are sold as peace of mind. In practice, they are service contracts with specific limits. This article explains what they actually cover, what they exclude, and when you should skip buying one entirely.
This is not legal advice — consult a licensed attorney regarding contract disputes or specific coverage questions in your state.
What a Home Warranty Is and Is Not
A home warranty is a one-year renewable service contract. You pay an annual premium (typically $300–$600) and a service fee per claim (usually $75–$125). In exchange, the warranty company arranges for a contractor to repair or replace covered items when they break down from normal wear and tear.
It is not homeowners insurance. Homeowners insurance covers sudden, accidental damage — a burst pipe from freezing, a tree falling through the roof. A home warranty covers mechanical failure due to age and use. A 12-year-old dishwasher that stops spinning? Possibly covered. A dishwasher that shorted out because lightning hit the house? That is an insurance claim.
Most policies are regulated under state insurance or consumer protection laws, but enforcement varies. Texas, California, and Florida have the most specific regulations. In many other states, home warranties are treated as service contracts with limited oversight.
The National Home Service Contract Association (NHSCA) sets voluntary standards, but membership is not mandatory. Always check whether your provider is licensed in your state. The Texas Department of Insurance, for example, maintains a public database of complaints against warranty companies.
Why the Category Exists
Home warranties exist because home systems and appliances fail. The average refrigerator lasts 10–14 years. A water heater lasts 8–12. HVAC systems average 15–20 years. When you buy a resale home, you inherit the remaining life of every component. A warranty shifts the financial risk of those failures onto the provider — in theory.
In practice, the risk is shared. You pay premiums and service fees. The provider bets that your claims will cost less than what you pay in premiums plus their profit margin. It works best for people who cannot absorb a $1,000+ repair bill without notice.
What Home Warranties Typically Cover
Every policy is different. But most standard plans cover two categories: major systems and major appliances.
| Category | Items Typically Covered | Common Exclusions |
|---|---|---|
| Major Systems | HVAC (heating and cooling), electrical panel and wiring, plumbing pipes and fixtures, water heater, ductwork | Duct cleaning, thermostat batteries, outdoor sprinkler systems, septic systems, well pumps |
| Major Appliances | Refrigerator, oven/range, dishwasher, clothes washer and dryer, garbage disposal, built-in microwave | Ice makers, wine coolers, second refrigerators, commercial-grade appliances, portable units |
| Optional Add-Ons | Pool/spa equipment, septic system, well pump, roof leak repair, additional refrigerator | Pool cleaning chemicals, roof replacement, structural damage |
American Home Shield, one of the largest providers, offers a “ShieldSilver” plan covering 14 appliances and systems for roughly $500/year. Their “ShieldPlatinum” plan adds roof leak coverage, HVAC tune-ups, and higher coverage caps. Choice Home Warranty’s “Basic Plan” covers 14 items for about $470/year. Their “Total Plan” adds plumbing stoppages and electrical systems.
Coverage caps matter. Most policies cap individual item repairs at $1,500–$3,000. If your HVAC system costs $5,000 to replace, you pay the difference. Some policies have an aggregate cap — total claims paid per contract year — often $10,000–$15,000.
What Home Warranties Do NOT Cover
This is where most disputes happen. The exclusions list is usually longer than the coverage list.
Pre-existing conditions. If the water heater was rusting before you bought the policy, it is excluded. The catch: the company decides what counts as pre-existing. A technician inspects the unit. If they find corrosion, sediment buildup, or prior leaks, they can deny the claim. Courts in California (Civ. Code § 1791) have generally found that pre-existing conditions must be specifically documented to be excluded. In practice, many claims are denied with a technician report noting “visible rust” or “age-related deterioration.”
Improper installation or maintenance. If the previous owner installed the dishwasher without a proper drain loop, any water damage is not covered. If you did not change the HVAC filter for two years and the compressor fails, the claim can be denied for lack of maintenance.
Code violations and permits. If a repair requires bringing the system up to current building code, the warranty usually covers only the basic repair, not code upgrades. In Texas (Admin. Code § 28.54), policies must disclose this limitation in writing. Many homeowners discover it only after the claim is denied.
Rust, corrosion, sediment, and scale. These are wear-and-tear items that warranty companies treat as maintenance issues. A water heater leaking from a rusted tank is often denied on this basis.
Clogged drains and sewer lines. Most policies exclude drain cleaning unless the clog is caused by a covered mechanical failure. If your kitchen sink is clogged with grease, that is your problem.
Outdoor items. Sprinklers, outdoor faucets, garage door openers (in many plans), fences, decks, and sheds are not covered unless specifically added.
Common Claim Denials and How to Avoid Them
Here are the most common reasons home warranty claims are denied, based on consumer complaints filed with state attorneys general and the Better Business Bureau.
- Denial #1: “Pre-existing condition.” The technician notes rust or age. How to avoid: Take photos of all major systems and appliances at move-in. Date them. If the warranty company later claims pre-existing damage, your photos establish the timeline. Some states (like California) require the company to prove the condition existed before coverage started.
- Denial #2: “Lack of maintenance.” The technician finds a dirty filter or clogged drain. How to avoid: Keep receipts for filter changes, HVAC tune-ups, and drain cleaning. If you can show you maintained the unit, the denial is harder to sustain.
- Denial #3: “Improper installation.” The unit was installed incorrectly by a previous owner. How to avoid: Have a home inspection before purchase. If the inspector flags an improper installation, address it before closing — or negotiate a credit.
- Denial #4: “Coverage cap.” The repair costs more than the policy limit. How to avoid: Read the coverage caps before buying. If your HVAC is old and expensive to replace, a warranty with a $1,500 cap will not help much. Some policies let you buy higher caps for an additional premium.
- Denial #5: “Not a covered item.” The policy lists “refrigerator” but not the ice maker. How to avoid: Read the exclusions list carefully. If you have a specific appliance (wine cooler, second fridge, chest freezer), check whether it is covered or requires an add-on.
One more thing: service fees. Every claim costs you $75–$125. If the repair is minor — a $150 fix — you pay the fee and the warranty company pays nothing. You effectively paid $75–$125 for a $150 repair. That is not a good deal.
When a Home Warranty Makes Sense
For some buyers, a home warranty is a rational purchase. Here is when it works.
You are buying a home with older systems and have limited cash reserves. If the HVAC is 18 years old and you have $2,000 in savings after the down payment, a $500 warranty that covers a $4,000 replacement makes sense — even with the risk of denial. The expected value of the warranty (probability of failure × cost of repair) is positive for you.
You are a first-time homebuyer unfamiliar with repair costs. The education value alone can be worth the premium. You learn how to file a claim, what contractors charge, and how systems work — without paying full price for a mistake.
You are selling a home and want to reduce buyer anxiety. Sellers often buy a one-year warranty for the buyer as a closing gift. It signals that the seller stands behind the home’s condition. It also reduces the likelihood of post-closing disputes over appliance failures.
Your home has multiple aging appliances. A house with a 15-year-old water heater, a 12-year-old furnace, and a 10-year-old refrigerator has a high probability of at least one failure per year. The warranty’s expected payout is higher than the premium.
When to Skip the Home Warranty Entirely
Here is the other side. In many situations, a home warranty is a bad deal.
You have a healthy emergency fund. If you can cover a $2,000 repair without stress, you are better off self-insuring. Put the $500 premium into a dedicated home repair account. In five years, you have $2,500 — enough for most single-system failures. You also avoid the hassle of claim denials and contractor scheduling delays.
Your home is new or recently renovated. A new HVAC system under manufacturer warranty does not need a home warranty. Most major appliances come with 1–5 year manufacturer warranties. A home warranty duplicates that coverage and adds a service fee.
You want specific contractors. Home warranty companies use their own network of contractors. You cannot call your trusted plumber. If the contractor they send does poor work, your recourse is limited to the warranty company’s complaint process.
You are handy. If you can replace a water heater or fix a dishwasher yourself, the warranty is worthless. You pay for a service you will not use.
You live in a state with weak consumer protections. In states where home warranties are not regulated as insurance, companies have more leeway to deny claims. Check your state’s department of insurance website for complaint data before buying.
A better alternative for many homeowners: a home inspection contingency at purchase, a manufacturer’s extended warranty on new appliances, and a dedicated savings account for repairs. That combination covers most failure scenarios without the exclusions and service fees of a home warranty.
How to Read a Home Warranty Contract Before You Buy
Contracts are dense. But there are five clauses you must read before signing.
1. The coverage period and renewal terms. Most policies run 12 months from the effective date. Some start on the closing date; others start later. Know the exact start and end dates. Also check whether the policy auto-renews and at what price.
2. The service fee structure. Is it a flat fee per claim or per visit? If a single repair requires two visits (diagnosis then repair), some companies charge two service fees. Others charge one. Read the fine print.
3. The waiting period. Many policies have a 30-day waiting period before you can file a claim. If your water heater fails on day 15, you are not covered.
4. The arbitration clause. Most home warranty contracts require binding arbitration for disputes. You waive your right to sue in court. If you have a problem, you must go through the American Arbitration Association or a similar body. Check whether the contract allows class action arbitration — many do not.
5. The cancellation policy. Can you cancel within the first 30 days for a full refund? What is the cancellation fee after that? Some states require a pro-rated refund; others do not.
If you cannot understand a clause, ask the provider to explain it in writing. If they refuse, that is a red flag. Consider a different provider.
Remember that water heater from the opening scenario. If you had read the contract and found the pre-existing condition exclusion, you would have known the risk. You could have asked the seller for a home warranty that covers pre-existing conditions — some policies do, at a higher premium — or negotiated a credit for a new water heater instead.
Home warranties are a tool, not a safety net. Used correctly, they protect against specific, predictable failures. Used without understanding the exclusions, they become a source of frustration. Know what you are buying. Read the contract. And if it does not fit your situation, save the premium for the repair fund.
