Home Warranty Contract Exclusions 2026: What Is Not Covered

Coverage grant vs. exclusions is the core tension in every home warranty contract. The coverage section gives; the exclusions section takes back. A policy that says "we cover your HVAC system" can still deny your HVAC claim if the failure falls under any of the exclusion clauses.

How Exclusions Work Against Coverage Grants

Coverage section

"We cover your HVAC system, including heating unit, air conditioning unit, ductwork, and related components."

Exclusions section

"Does not cover: pre-existing conditions, improper installation, prior improper repair, inadequate maintenance, rust/corrosion, sediment, secondary damage, code upgrades, permit fees, modifications for replacement units..."

What looked like broad HVAC coverage now has 10 carve-outs that can apply to most real-world HVAC failures.

Universal Exclusions: In Every Contract

Pre-existing conditions - Failures caused by conditions that existed before the policy start date. Most commonly abused exclusion in the industry.

Improper installation - Systems or appliances installed incorrectly are excluded. Since many homeowners don't know installation history, this can be applied broadly.

Improper prior repair - Any prior repair not done to industry standards creates an exclusion. Homeowners often don't know the complete repair history of their systems.

Lack of maintenance - Failure caused by inadequate maintenance is excluded. HVAC contracts often require proof of annual maintenance.

Cosmetic damage - Scratches, dents, rust on surfaces - visual damage without functional impact.

Secondary damage - Water damage caused by a pipe leak, food spoilage from a failed refrigerator - downstream consequences are excluded.

Permits and code upgrades - When a system is replaced, building code upgrades or permits are excluded and fall entirely on the homeowner.

Haul-away and disposal - The cost of disposing of replaced equipment - significant for HVAC units and appliances.

Modifications - If a replacement unit requires modifications to fit the existing space or connections, that cost is excluded.

HVAC-Specific Exclusions

HVAC claims drive the most disputed exclusions. These are the carve-outs that most commonly produce denials on covered systems.

Freon / refrigerant

Many plans limit or exclude refrigerant recharging. Leaks are a common HVAC failure mode.

Ductwork limitations

Coverage for ductwork often has caps on linear footage or excludes inaccessible ductwork.

Maintenance records requirement

No documented annual maintenance = potential denial, even on otherwise covered failures.

Rust and corrosion

Significant in humid and coastal markets. AHS is notable for explicitly covering rust/corrosion - most contracts exclude it.

Appliance-Specific Exclusions

Cosmetic damage (dents, scratches, surface rust)

Racks, shelves, and interior liners (refrigerator/dishwasher)

Filters and consumables (water filters, air filters, bulbs)

Knobs, dials, and handles

Damage from overloading (washer/dryer)

Manufacturer defects if item is still under manufacturer warranty

Plumbing Exclusions

Well pumps and septic systems - Typically excluded from basic plans; available as paid add-ons at most companies.

Irrigation systems - Excluded from standard coverage in virtually all contracts.

Shower pans and exterior drain lines - Location-based limitations apply - lines outside the home's foundation are often excluded.

Water damage from plumbing failure - Only the plumbing repair is covered - not the water damage it caused.

Aesthetic fixture damage - Cosmetic faucet replacement generally not covered; functional plumbing repairs are.

Pre-Existing Condition Exclusion - In Detail

Legitimate use

You buy a warranty knowing your HVAC is failing, and it dies within weeks. The exclusion correctly prevents gaming the system.

Abusive use

Contractor notes "rust consistent with long-term operation" on a fully functional system at policy start, then uses this to deny a claim 8 months later.

The documentation defense

Your best protection: documentation showing the system was operational at policy inception - a recent home inspection report, HVAC service receipt, or seller disclosure showing no known issues. California limits pre-existing exclusions to conditions actually known to the consumer, not merely "reasonably discoverable."

How to Read Exclusions Before Buying

Get the full sample contract, not the brochure

Most companies provide a sample contract PDF on their website. Download it. Read the entire exclusions section before purchasing.

Ask about your specific concern

If you have a 15-year-old HVAC, ask specifically: "What would you need to see to cover HVAC replacement if the unit fails?" Get the answer in writing.

Compare exclusion language, not just coverage lists

Two companies may both say "we cover HVAC." Compare what each excludes from HVAC. The company with fewer exclusions provides better effective coverage.

Market-specific dealbreakers

Rust/corrosion exclusion + humid/coastal location = significant HVAC coverage gap
Refrigerant exclusion + older HVAC with leak history = likely denial
Maintenance records requirement + no records = pre-existing condition risk

Home Warranty Contract Exclusions What's Never Covered - and Why (2026)