review.solar’s plain-language summary of the manufacturer’s warranty terms as at the review date. Not a legal instrument: verify current terms with the manufacturer before making a claim.
25yr
Product warranty
25yr
Performance warranty
90.58%
Output at end of term
Performance guarantee: 25-year linear output
Projected outputGuaranteed floor: 90.6% at yr 25
The guarantee
Product (materials and workmanship) warranty: 25 years
Linear performance warranty: 25 years
Defects in materials and workmanship
Power output shortfall
What voids or limits it
Removal and reinstallation labour
Damage from improper installation or misuse
Force majeure and environmental damage
Normal degradation within warranted limits
How to claim
Start with the original installer or seller. Full summary, conditions and sources: page 2.
Product (materials and workmanship) warranty: 25 years
Hanwha Qcells publishes a 25-year product warranty for the North American Q.TRON BLK M-G2+ 420-440 W series. The benchmark is anchored to the 440 W class in the exact Rev02 datasheet.
Linear performance warranty: 25 years
Guaranteed output: at least 98.5% of rated nominal power at end of year one, declining no more than 0.33% per year: at least 95.53% after 10 years and 90.58% after 25 years. Applies under standard test conditions, in addition to the product warranty.
What’s covered
Defects in materials and workmanship
Covers manufacturing defects: solar cells, encapsulant, frame, junction box, connectors: under normal operating conditions. Excludes physical damage from factors beyond the manufacturer's control: improper installation, misuse, or external environmental events.
Power output shortfall
If measured output falls below the guaranteed linear thresholds under standard test conditions, Qcells may repair, replace, or pay a depreciated refund. Confirmed-claim transport is covered under the governing process; removal and reinstallation are excluded.
Exclusions
Removal and reinstallation labour: The standard limited warranty excludes removing defective modules and reinstalling replacements. Labour is covered only when Qcells selects repair; there is no unrestricted site-labour entitlement.
Damage from improper installation or misuse: Damage resulting from non-compliant installation, physical abuse, unauthorised modification, or operation outside the module's rated specifications voids the warranty.
Force majeure and environmental damage: Damage from events outside Qcells' control: storms, hail, lightning, flooding, fire, or acts of third parties: is excluded.
Normal degradation within warranted limits: Gradual power degradation that remains within the guaranteed thresholds of the linear performance warranty is not a defect and is not covered.
Transferability
Transfers automatically with title while the complete system remains intact at the original installation site. No transfer registration is required, but a claimant must provide the prescribed ownership and installation evidence.
How to make a claim
Start with the original installer or seller. For a direct manufacturer claim, contact Qcells North America support with the module serial number, proof of purchase and installation records. Confirm the complete current warranty terms for the supplied 440 W SKU before purchase.
Source reference
DocumentQcells Warranty Terms for Q.TRON-G2+ Series: North America