Home Warranty When Buying or Selling: What It Covers, What It Doesn't, and Whether It's Worth It
· Guide · 6 min read
A home warranty is a service contract—not an insurance policy—that pays for repair or replacement of covered home systems and appliances when they fail due to normal wear and tear. Whether one is worth the annual premium depends on the age of the home, the condition of its systems, and whether the warranty's exclusions make the coverage less comprehensive than the marketing suggests.
How Home Warranties Work in Real Estate Transactions
Home warranties appear in real estate transactions in three ways: purchased by a buyer independently, offered by a seller as part of the listing, or negotiated as a concession when a buyer discovers concerning items in the home inspection. In each case, the mechanics are the same—you pay an annual premium, and when a covered item breaks, you call the warranty company, they dispatch a technician from their contracted network, and you pay a service call fee for each visit.
Based on agent listings in our real estate directory, home warranty offers appear most frequently in transactions involving homes 15–30 years old where sellers want to reduce buyer hesitation, and in slower markets where listing agents advise sellers on incentive strategies to distinguish their home. They are less common on new construction (where builder warranties and manufacturer warranties cover the same period) and high-end homes above $1.5M (where buyers expect direct vendor relationships rather than warranty company dispatching).
What's Typically Covered
Standard home warranty plans cover:
- HVAC systems: Heating and cooling unit repair/replacement due to mechanical failure. Many plans exclude ductwork, refrigerant leaks unless specified, and heat pumps as add-ons.
- Electrical systems: Panels, wiring, outlets, and switches. Typically excludes outdoor wiring, doorbell systems, and smart home components.
- Plumbing systems: Pipes, valves, and fixtures for stoppage and leaks. Typically excludes the fixtures themselves (faucets, shower heads), septic systems (add-on), and water softeners.
- Water heater: Both traditional tank and tankless covered by most plans; some treat tankless as an add-on.
- Kitchen appliances: Built-in dishwasher, range/oven, built-in microwave, refrigerator (sometimes with or without ice maker).
- Washer and dryer: Standard plan usually covers; coverage varies significantly by provider.
Premium plans add: pool and spa equipment, roof leaks, well pump, septic system, second refrigerator. These add-ons cost $50–$200/year each and are worth it only if you have those specific systems and they are aging.
What's Typically Excluded: The Fine Print That Matters
The exclusions section of a home warranty contract determines whether coverage is genuinely useful or primarily a claims-denial mechanism. Common exclusions that catch buyers off guard:
- Pre-existing conditions: Items that showed signs of failure prior to the warranty start date are excluded. After a home inspection, a seller's disclosure of a known HVAC problem may void warranty coverage for that system.
- Improper installation or maintenance: If an HVAC unit was installed without proper permits or a water heater wasn't maintained according to manufacturer guidelines, the warranty company may deny coverage.
- Code upgrades: When a covered system is replaced, it must meet current building codes. The cost of bringing the replacement to code (new permits, additional components) is typically paid by the homeowner, not the warranty company.
- Secondary damage: Damage caused by the failure of a covered item—water damage from a plumbing failure, for example—is excluded. That falls under homeowners insurance.
- Rust, sediment, and mineral deposits: Many plans exclude failures caused by these conditions, which are common in older homes and homes in hard-water areas.
- Capacity mismatches: A new HVAC system of different capacity than what the warranty company's dispatch authorizes may not be fully covered for the upgrade portion.
Cost Breakdown: What You're Actually Paying
A home warranty's true cost includes premium, service call fees, and anything the warranty doesn't pay:
- Annual premium: $450–$700 for a standard plan; $600–$1,200 for comprehensive plans with multiple add-ons
- Service call fee per visit: $75–$150; the industry has moved toward $100–$150 in 2026
- Out-of-pocket on a claim: Code upgrades, non-covered components, and the service call fee itself—a single HVAC claim may cost $150–$600 out of pocket even when the repair itself is covered
- Opportunity cost: A buyer who invests $700/year in a home maintenance fund over 10 years has $7,000+ available for exactly the repairs they choose, from contractors they select
The break-even math: if your HVAC fails in year one and requires a $4,000 repair, the warranty paid off. If nothing significant breaks for three years, you've paid $1,500–$2,100 in premiums for peace of mind. Neither outcome is certain.
The Seller's Perspective: Why Sellers Offer Warranties
Sellers offer home warranties in two situations. The first is listing period protection: a warranty purchased before listing (typically $300–$600 for a 6-month listing period) protects the seller if a system fails while the home is on the market. Without it, a seller may be asked to repair a failed dishwasher or HVAC unit as a condition of the contract.
The second is buyer incentive: including a one-year warranty as a seller concession ($500–$800) can reduce buyer nervousness about system age without reducing the sale price. For listings that have been on the market longer than typical, or homes with aging-but-functional systems, agent data in our directory most often shows this as a targeted way to address buyer objections about deferred maintenance risk.
See our guide to pre-listing repairs and ROI for the full analysis of what to fix vs. offer credit for vs. bundle into a warranty concession when preparing a home for sale.
During the Inspection: How Warranties Affect Repair Negotiations
When a home inspection reveals an aging HVAC, water heater, or appliance, buyers and sellers commonly negotiate around it in one of three ways: seller repairs before closing, seller offers a price reduction, or seller purchases a warranty. The warranty option works best when the item is functional but aging ("approaching end of life," not "failed"), because it provides cost protection without the seller having to choose and hire a contractor before closing.
Understand that a warranty on an aging system is not the same as a repair or replacement. A 20-year-old HVAC unit that fails in month 6 of a warranty period may be covered for the repair—but it may fail again in month 14, after the warranty has expired. When the inspection reveals a clearly end-of-life system, a price reduction or escrow credit for replacement is a more durable concession than a warranty.
For the full picture of negotiation strategies, see our home inspection repair request strategy guide and the seller concessions vs. price cut math guide for how to evaluate the true value of each approach.
How to Evaluate a Home Warranty Before Buying
If you're purchasing a home warranty as a buyer or a seller covering the listing period, evaluate these factors:
- Read the exclusions, not just the marketing: The coverage page shows what's included. The exclusions section shows what's actually paid when you file a claim. This is where plan quality differs most significantly between providers.
- Check the service call fee: A plan with a $150 service call fee and $500 annual premium costs $650 before the warranty company pays a cent on a single claim. Compare all-in costs, not premium alone.
- Verify contractor quality: Warranty companies dispatch from their own contracted service networks. In some markets, contractors available through warranty networks have lower ratings than the open market. Check reviews of the warranty company's local contractors before purchasing.
- Review the replacement cost provisions: Verify the gap between the warranty's wholesale payout rate and actual retail replacement cost for your specific systems.
- Check cancellation policy: Can you cancel mid-year for a prorated refund? Some companies charge cancellation fees that eliminate the refund value.
To find real estate agents who can advise on whether a warranty makes strategic sense for your specific transaction—as a buyer or seller—browse our agent directory by city or search for real estate agents near you and review the transaction volume and buyer/seller specialization data in each profile.
Frequently Asked Questions
- What does a home warranty cover?
- A standard home warranty typically covers repair or replacement of major systems (HVAC, electrical, plumbing) and major appliances (refrigerator, oven, dishwasher, washer/dryer) when they fail due to normal wear and tear. Coverage excludes pre-existing conditions, code upgrades, cosmetic issues, and items excluded in the contract fine print. Read the exclusions section carefully before purchasing.
- Is a home warranty worth buying for a buyer?
- Home warranties are most valuable for buyers purchasing older homes (15+ years) with aging systems, buyers who lack emergency repair funds, or buyers with limited knowledge of home systems who want a managed service process. They are less valuable for buyers of newer homes where systems are under manufacturer warranties, or buyers who prefer to hire their own contractors for repairs.
- Can a seller offer a home warranty to help sell their home?
- Yes, and it's a common strategy. Sellers sometimes purchase a home warranty covering the listing period (typically $300–$600) to protect themselves if a system fails before closing. They may also offer to pay for the buyer's first-year warranty ($500–$800) as a closing incentive when buyers are negotiating repairs or wavering on an offer.
- What is a service call fee in a home warranty?
- A service call fee (also called a trade call fee) is what you pay each time a technician visits to diagnose or repair a covered item—typically $75–$150 per visit. This fee applies regardless of whether the repair is ultimately covered, and each separate system or appliance requiring diagnosis is a separate service call fee. High service call fees significantly reduce the practical value of lower-premium plans.
- Do home warranties pay for full replacement if a system can't be repaired?
- Home warranty contracts typically offer a cash-out option for replacement of covered items, but the payout is often based on the warranty company's negotiated wholesale cost—not retail replacement value. An HVAC system that costs $8,000 to replace retail may have a warranty payout of $3,500–$5,000. Read your contract's replacement cost provisions carefully before purchasing.