HVAC Warranty Guide: What's Covered and What's Not in Texas
Updated 2026-03-27 · DFW Air Cost
HVAC Warranty Guide: What's Covered and What's Not in Texas
You've just invested $12,000-$15,000 in a new AC system. The contractor offers a "10-year warranty." What does that actually cover? And what's not covered?
Here's the breakdown so you're not surprised when your system needs service.
Standard HVAC Warranty Structure
A typical 10-year HVAC warranty includes two components:
Parts Warranty (10 years)
Covers:
- Compressor failure or internal defect
- Condenser coil leaks or internal failure
- Evaporator coil leaks or internal failure
- Furnace or air handler malfunction
- Blower motor failure
- Capacitors, contactors, other electrical components
- Refrigerant line defects (leaks due to manufacturer defect)
Doesn't cover:
- Refrigerant itself (you pay for freon if it leaks after installation)
- Maintenance items (filters, coil cleaning)
- Normal wear and tear after 10 years
- Damage from improper maintenance
- Damage from power surges or lightning
- Damage from installation errors
In practice: If your compressor fails due to defect on year 5, the compressor is free (just labor cost if out of labor warranty).
Labor Warranty (10 years)
Covers:
- Installation defects
- Labor to replace covered components under parts warranty
- Service calls for covered component failures
- System adjustments and troubleshooting for warranty issues
Doesn't cover:
- Maintenance labor (filter change, coil cleaning, annual service)
- Non-warranty repairs (things that failed from age/wear)
- Emergency service charges (nights, weekends, holidays)
- Travel time or service calls for non-warranty issues
In practice: If evaporator coil fails on year 3, labor to replace it is covered (you pay nothing for labor, just the part if not in parts warranty).
Manufacturer Warranty vs. Contractor Warranty
Manufacturer warranty (5-10 years):
- Comes from equipment manufacturer (Carrier, Lennox, etc.)
- Covers manufacturer defects in equipment
- Applies regardless of who installed system
- If you sell home, transferable (adds value)
Contractor warranty (10 years typical):
- Extended coverage on top of manufacturer warranty
- Covers contractor's installation quality
- Protects you from installation problems
- Often includes additional labor coverage
Best case: Both manufacturer and contractor warranty overlap, giving you double protection during overlap period.
What Often DOESN'T Get Covered
1. Refrigerant Leaks (After Initial Charge)
After installation, your system is charged with refrigerant. If it develops a small leak and loses refrigerant:
Covered: If leak is due to manufacturer defect (coil corrosion, line manufacturing flaw) and found within 1-2 years
Not covered: If leak is from age/wear, improper installation by someone else, power surge, or damage from outside
Cost if not covered: $50-$150 per pound of refrigerant (R-410A, $50-$100/lb; R-32, $75-$150/lb), plus labor ($150-$300)
Protection: Ask contractor if they cover refrigerant top-ups in first 1-2 years. Some do as part of installation warranty.
2. Maintenance Items
Not covered under warranty:
- Air filters (you replace every 1-3 months)
- Condenser coil cleaning
- Blower motor cleaning
- Ductwork cleaning
- Thermostat batteries
Cost if you don't maintain: Dirty filters restrict airflow, system works harder, fails sooner.
3. Age-Related Wear
After 10 years, warranty expires. System might still run 5-10 more years, but:
Not covered after 10 years:
- Compressor failure (most common late-life failure)
- Capacitor failure (happens around 10-15 years)
- Blower motor failure
- Electrical component failure
Cost of repair after warranty: $1,000-$2,500 per component
Strategy: Plan for replacement around year 12-15 rather than expensive repairs on 15-year-old system.
4. Ductwork Issues
AC system warranty doesn't cover ductwork:
Not covered:
- Leaky ducts
- Ductwork damage
- Improper duct sizing
- Return duct problems
Overlap issue: If ductwork problem affects AC performance, contractor might argue it's not their responsibility. Get ductwork evaluated separately.
5. Thermostat Issues
Smart thermostat (Ecobee, etc.) usually has separate 2-year warranty from thermostat manufacturer.
Not covered under AC warranty:
- Thermostat malfunction (usually covered by thermostat maker, not HVAC contractor)
- WiFi connectivity problems
- App issues
Texas-Specific Warranty Considerations
Heat waves: Texas summers stress systems. Many failures happen during peak season (July/August). Having labor warranty coverage means contractor must come quickly (no "call back in September" nonsense).
Power surges: Texas thunderstorms cause power surges. Standard warranty doesn't cover surge damage. Consider whole-home surge protector ($200-$300) to protect your system.
Humidity: Texas humidity stresses dehumidification function. If system can't dehumidify properly, is it a warranty issue? Usually not (unless compressor/coil is defective).
How to Maximize Warranty Protection
1. Read Warranty in Writing
Don't rely on verbal promises. Get:
- Parts warranty details (what's covered, how long)
- Labor warranty details (coverage and limits)
- Exclusions (what's NOT covered)
- How to claim (process for warranty service)
2. Schedule Annual Maintenance
Most warranties require annual maintenance to remain valid:
Typical requirement:
- Pre-season inspection (spring, before cooling season)
- Contractor verifies system is operating per spec
- Coil cleaning, filter check, electrical check
Cost: $100-$150/year
Benefit: Keeps warranty active, identifies issues early, extends system life
Skip maintenance: Some contractors will claim warranty is void if you skip maintenance. Don't risk it.
3. Document Everything
Keep:
- Installation receipt and warranty documents
- Annual maintenance records
- Service call receipts
- Photos of system/equipment
Why: If warranty claim is disputed, documentation proves maintenance was done.
4. Report Issues Quickly
If you notice:
- Reduced cooling capacity
- Strange noises
- Refrigerant leaks (hissing, frost on outdoor unit)
- Electrical issues (breaker trips, burning smell)
Action: Call contractor immediately. Get service call documented. Warranty claims are easier if issue is documented early.
5. Use Approved Contractor for Service
Warranty might be void if you hire unauthorized contractor for repair. Always use your original contractor for warranty service, or confirm their approval of using someone else.
Transferable Warranty
If you sell your home, check warranty transferability:
Manufacturer warranty: Usually transfers to new owner if system is properly registered
Contractor warranty: Sometimes transfers, sometimes doesn't. Check your warranty document.
Value: Transferable warranty adds value to home. Mention it to potential buyers.
Extended Warranty Options
Some contractors offer extended warranty beyond standard 10 years:
Extended warranty (10-15 years):
- Cost: $500-$1,500
- Covers additional 5 years of parts/labor
- Useful if you plan to stay very long-term
Maintenance plan (annual):
- Cost: $150-$250/year
- Includes two annual inspections
- Priority service (contractor comes faster)
- Useful for peace of mind
Evaluate: Extended warranty is profitable for contractors. Only buy if you're definitely staying 15+ years.
Real Warranty Scenario
System installed: Year 0 (today)
Year 3: Compressor fails
- Parts: Free (covered under 10-year parts warranty)
- Labor: Free (covered under 10-year labor warranty)
- Refrigerant: Free (usually covered within first year)
- Your cost: $0
Year 8: Capacitor fails
- Parts: Free (covered under 10-year parts warranty)
- Labor: Free (covered under 10-year labor warranty)
- Your cost: $0
Year 12: Blower motor fails
- Parts: NOT covered (10-year warranty has expired)
- Labor: NOT covered
- Refrigerant: NOT covered
- Your cost: ~$1,000-$1,500 for part and labor
- Decision: Repair or replace?
Year 15: Compressor fails again (after replacement at year 3)
- NOT covered (warranty expired at year 10)
- Cost: $1,500-$2,500 for compressor replacement
- Decision: At this age, replacement often makes more sense than repair
Warranty vs. Reliability
A good warranty doesn't prevent failures; it protects you financially when they occur. The goal is reliability (system doesn't fail), not warranty use.
Signs of good reliability:
- Consistent manufacturer quality
- Proper installation
- Regular maintenance
- Quality components throughout system
A system that never fails needs warranty less than a system with problems.
Questions to Ask Contractor
Before signing:
- "What exactly is covered under parts warranty?" (Get list of covered components)
- "What is covered under labor warranty?" (Coverage period and limits)
- "What's NOT covered?" (Exclusions and limitations)
- "How do I claim warranty service?" (Process and contact info)
- "Is annual maintenance required to keep warranty valid?" (Yes/no and what's required)
- "Is warranty transferable if I sell?" (Manufacturer vs. contractor warranty)
- **"Do you offer extended warranty?" (Cost and what it covers)
Next Steps
When getting your AC replacement quote from dfwaircost.com, ask about warranty details. Warranty is part of value; make sure you understand what you're getting.
Warranty protection is important, but reliability is more important. Choose quality equipment and proper installation, maintain it annually, and the warranty becomes a safety net you hopefully never need.
Ready to get quotes with clear warranty details? Head to dfwaircost.com now.
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