What Does a Home Warranty Cover? A Complete Guide

A home warranty covers mechanical failuresof major home systems and appliances due to normal wear and tear — not damage from accidents, neglect, or natural disasters. Here's the complete breakdown, including the exclusions providers don't advertise.

What's Typically Covered

Home Systems

• Heating system (furnace, heat pump)
• Air conditioning (central A/C, ductwork)
• Plumbing (pipes, valves, toilets, faucets)
• Electrical system (wiring, panels, outlets)
• Water heater (tank and tankless)
• Garage door opener

Appliances

• Refrigerator
• Dishwasher
• Oven, range, and cooktop
• Built-in microwave
• Washer and dryer
• Garbage disposal

Coverage Caps: The Number That Matters Most

"Covered" doesn't mean "fully paid." Every contract sets a per-item dollar cap, and the spread between providers is enormous:

This is why our reviews weight coverage depth at 25% of the total score — a cheap plan with a $1,500 HVAC cap can be the most expensive plan you ever buy. Cinch Home Services leads the industry here with caps up to $10,000 per item.

What's NOT Covered

• Pre-existing conditions — anything broken before your coverage started (most providers run a 30-day waiting period to enforce this)
• Cosmetic damage — dents, scratches, discoloration that don't affect function
• Damage from misuse or neglect — including failures attributed to missing maintenance records
• Structural components — foundation, walls, windows, doors
• Outdoor systems — sprinklers, pools, wells (unless added as options)
• Code upgrades and permits — bringing old installations up to current code typically bills separately
• Commercial-grade or luxury equipment — Sub-Zero, Wolf, and similar brands are commonly excluded or capped far below repair cost

Optional Add-On Coverage

Most companies offer optional coverage for an extra $3–$15/month:

• Pool and spa equipment
• Roof leak repair
• Septic system and septic pumping
• Well pump and sump pump
• Second refrigerator / standalone freezer
• Central vacuum
• Guest unit (under 750 sq ft)

How to Read a Sample Contract in 10 Minutes

1. Skip the marketing summary — go straight to the section titled "Limitations of Liability" or "Exclusions."
2. Find the per-item caps table and compare it against the real replacement costs above.
3. Search the document for the word "maintenance" — this tells you what proof providers can demand before approving a claim.
4. Check the waiting period (standard is 30 days) and the workmanship guarantee (30–180 days depending on provider).

Every provider is legally required to publish a sample contract. If a salesperson won't send one, that itself is your answer. For provider-specific coverage details, see our full company rankings.

System-by-System: What "Covered" Means in Practice

HVAC: the claim that matters most

Covered: compressors, condensers, evaporator coils, blower motors, thermostats, heat exchangers, ignitors, and refrigerant recapture/recharge during a covered repair. Commonly excluded: window units, systems over a tonnage threshold (usually 5 tons residential), ductwork insulation (the ducts themselves are usually systems-plan covered), registers and grills, and — critically — refrigerant recharges outside a covered repair. With R-410A pricing up sharply, that last exclusion is the most expensive surprise in the modern contract.

Plumbing: covered deeper than most people expect

Covered: leaks and breaks in water, drain, gas, and vent lines within the home's foundation perimeter, toilet tanks and bowls (like-for-like quality), valves, pressure regulators, and stoppages clearable through an accessible cleanout. Excluded: fixtures' cosmetic parts, stoppages caused by roots (that's a sewer-line add-on at most providers), anything outside the foundation, and — the big one — access costs: the provider repairs the pipe but caps payment for cutting through and restoring drywall or concrete, typically at $500–$1,000.

Electrical: cheap to fix, valuable to cover

Covered: panels, breakers, wiring, outlets, switches, junction boxes, and exhaust fans. Excluded: fixtures (chandeliers, ceiling fans are often a separate line), low-voltage and smart-home systems, solar components, and EV chargers (a few providers now sell an EV-charger add-on — worth it given $800–$2,500 replacement costs). Electrical claims are rarely large, but panel failures ($1,300–$4,000) justify the category by themselves.

Appliances: read the parts language

The contract phrase to find is "all components and parts" versus "primary components."The former covers the $40 door switch that bricks your washer; the latter lets the provider deny anything deemed non-essential — handles, shelves, ice makers (often separately excluded), knobs, and lights. Liberty and AHS run all-components language on most tiers; budget plans elsewhere frequently don't.

Five Real Claims: Covered or Denied?

1. AC compressor seizes at year 11 — COVERED. Classic wear-and-tear failure, the exact scenario warranties exist for. Payout: $1,850 repair; homeowner paid the $100 fee.
2. Water heater leaking at install seam, coverage started 12 days ago — DENIED. Failed inside the 30-day waiting period; treated as pre-existing. Lesson: buy coverage before things wobble, not after.
3. Dishwasher control board fried by a power surge — DEPENDS. Surge damage is excluded at most providers (it's not wear and tear), but several cover it under "unknown causes" language. This is a clause worth checking if your area sees storms.
4. Furnace cracked heat exchanger, no maintenance records, 9 years old — DENIED, THEN REVERSED. Initial denial cited lack of maintenance; homeowner produced two tune-up receipts and photos, and the appeal paid $2,400. Documentation is leverage.
5. Built-in microwave dies at year 7 — COVERED, CASH OUT. Replacement part discontinued; provider paid the depreciated cash value ($310) rather than replacing. Cash-in-lieu is standard when parts are unavailable — you can negotiate the figure.

How the Big Six Differ on Coverage

Same categories, very different fine print. Cinch covers rust and corrosion — a failure mode most contracts exclude — and runs the industry's longest workmanship guarantee at 180 days. Choice covers items regardless of age with no maintenance-records requirement at enrollment (records still matter at claim time). American Home Shield sells the highest appliance brand flexibility and an optional "no cap" HVAC tier on ShieldPlatinum. Liberty Home Guard fields 40+ add-ons — the broadest optional menu — including pest control and gutter cleaning. First American includes improper-install/mismatched-system coverage on its Premier tier, closing the loophole that denies many HVAC claims. 2-10 bundles a structural pedigree from its builder-warranty business. Match the quirk to your home's actual weak point — that's the whole game. Our rankings page scores each on coverage depth.

The Coverage Questions to Ask Before Buying

• "What is the per-item cap on HVAC, and is there an aggregate annual cap?"
• "Is refrigerant covered outside of a covered repair?"
• "Do you cover all components and parts, or primary components only?"
• "What are access and restoration limits on plumbing repairs?"
• "Are items covered regardless of age, and do you require maintenance records?"
• "What exactly triggers the improper-installation exclusion?"

A sales rep who answers all six crisply is telling you something about the company; one who won't is telling you more.

System-by-System Coverage: What You Actually Get

Generic coverage lists obscure the specifics that matter. Here is what leading providers actually cover within each system category — and the common sub-components that get excluded even within a "covered" system.

HVAC Coverage in Detail

A typical HVAC coverage includes: compressor, condenser coil, evaporator coil, fan motor, capacitors, contactor, thermostat, blower motor, and ductwork (within the home). What is commonly excluded: refrigerant (sometimes covered for leaks in covered repairs, sometimes not), duct cleaning, filters, and cosmetic/insulation issues. The refrigerant exclusion is particularly impactful: a 5-pound R-410A recharge runs $200–$500 and is not part of a standard repair claim at most providers.

Plumbing Coverage in Detail

Covered: leaks within accessible pipes, toilet internals (fill valve, flapper, handle), faucet components, garbage disposal. Not covered: fixtures themselves (the faucet body), drains (blockages are excluded as "maintenance items"), septic systems (add-on), exterior hose bibs (varies), and access/restoration — meaning if the plumber needs to cut through a tile wall, most plans cover only the repair, not restoring the tile. American Home Shield is the notable exception with higher access limits.

Electrical Coverage in Detail

Covered: wiring within walls, electrical panels, outlets, switches, ceiling fans, exhaust fans, and smoke detectors (varies). Not covered: exterior wiring, lighting fixtures (the fixture itself), doorbells at most providers, and any wiring tied to dedicated home office or commercial equipment. Door bells and smart home wiring are grey areas — ask specifically.

The Pre-Existing Condition Problem: Understanding the Language

"Pre-existing condition" is the most commonly cited denial reason and the most misunderstood term in the industry. A pre-existing condition is not just something the technician says was "already broken" — it has a specific definition that varies meaningfully by contract.

• Known pre-existing condition: The homeowner knew about it, or it was visible and reportable on a recent home inspection. Universally excluded.
• Unknown pre-existing condition: The system was failing internally but showing no external signs. Most major providers cover unknown pre-existing conditions — this is a key differentiator. American Home Shield and Liberty Home Guard explicitly cover unknown conditions; some budget providers do not.
• Improper installation: A system installed incorrectly (non-code installation, wrong equipment for the application) is typically excluded regardless of when the fault becomes apparent.

Before buying a home warranty on an older property, request an inspection of major systems. Document that everything is operational on the inspection date. That documentation becomes your defense if a failure occurs in the first 60 days of coverage.

Coverage for Older Homes: What You Need to Know

Older homes face more coverage nuances than new construction. The most common issues:

• Code upgrade exclusions: When an old system is replaced, current building code may require upgraded components (larger breaker, different venting, seismic strapping). Most plans exclude "code upgrade" costs unless specifically listed — add $200–$1,500 to your out-of-pocket estimate for major system replacements in older homes.
• R-22 refrigerant: AC systems manufactured before ~2010 likely used R-22 refrigerant (now discontinued). Most providers exclude R-22 recharges or cover them at a significantly limited amount because the refrigerant price has risen dramatically (currently $50–$150/lb vs. $5/lb in 2015).
• Galvanized pipe exclusions: Very old homes (pre-1960s) with galvanized steel plumbing may face full exclusion of the plumbing system or limitations on covered repairs.
• Knob-and-tube wiring: Pre-1940s knob-and-tube electrical wiring is excluded by every major provider and by homeowners insurance. Rewiring is not a warranty item.

Optional Add-On Coverage: The Complete Guide

Most homeowners buy the base plan and skip add-ons. This is often correct — but these optional coverages frequently offer excellent value when matched to the right home.

Reading the Exclusions: The Clauses That Matter Most

Every warranty contract runs 20–40 pages and contains exclusion language that can override the headline coverage. Here are the five contract clauses with the most real-world impact on claims:

• "Primary components" vs. "all parts": Some contracts cover "primary components and parts" only — leaving out smaller parts like capacitors, contactors, and thermostats. A contract covering "all components and parts" is measurably better.
• "Access and restoration" limits: The dollar limit on opening walls or floors to access covered systems. $250 is standard (inadequate for most scenarios); some plans go to $500–$1,000. American Home Shield is the market leader here.
• "Non-compatibility" exclusion: If a replacement part is not compatible with existing equipment (common on older systems), some contracts exclude coverage. This is a predatory clause — look for its absence in any plan you evaluate.
• "Proper maintenance" requirement: Plans that require proof of regular maintenance can deny claims on systems with no documentation. Liberty Home Guard and Choice do not require maintenance records for most claim types — a meaningful advantage.
• "Aggregate annual cap": Some plans have a per-item cap AND a total annual cap. If you file two HVAC claims in one year, your second claim may be limited by the annual cap even if the per-item cap was not reached. Verify both numbers.

Use our provider comparison to see which specific exclusions apply to each of the major providers — we read the contracts so you do not have to.