Aptos Solar DNA-144-MF26 440W Silver vs Waaree WS-440
The Aptos Solar DNA-144-MF26 440W Silver wins this comparison by a clear margin. It offers better long-term durability with 25-year warranty. For most residential installations, the Aptos Solar DNA-144-MF26 440W Silver is the stronger choice.
Key Differences
- • Both panels are rated at 440W, so the comparison comes down to efficiency, warranty, and technology.
- • Waaree WS-440 achieves 21.8% efficiency vs 20.21% for the other, a 1.6 percentage point gap.
- • Aptos Solar DNA-144-MF26 440W Silver comes with a 25-year product warranty vs 12 years for the other.
- • Waaree WS-440 has a superior temperature coefficient of -0.3%/°C vs -0.35%/°C, retaining more power in hot climates.
- • Aptos Solar DNA-144-MF26 440W Silver uses PERC Mono cells while Waaree WS-440 uses TOPCon N-type cells, representing different technology generations.
Specifications Breakdown
Module Efficiency
The Waaree WS-440 achieves 21.8% module efficiency compared to Aptos Solar DNA-144-MF26 440W Silver's 20.21%, meaning Waaree WS-440 converts 1.6 percentage points more sunlight into electricity per square meter. In practical terms, the Aptos Solar DNA-144-MF26 440W Silver produces 202.1 watts per square meter of panel area while the Waaree WS-440 produces 225.3 W/m². For rooftop installations where space is limited, this efficiency gap determines how many kilowatts you can fit on your available roof area. Over a 25-year system life, even a small efficiency advantage compounds into meaningful additional energy production.
Power Output
Both panels are rated at 440W under standard test conditions (STC), requiring 19 panels each to build an 8 kW system. With identical wattage ratings, the power output dimension is a draw and does not favor either panel. The real differentiators become efficiency density, temperature behavior, and long-term degradation rates which determine actual field performance beyond the nameplate rating.
Temperature Coefficient
The Waaree WS-440 has a temperature coefficient of -0.3%/°C versus -0.35%/°C for the Aptos Solar DNA-144-MF26 440W Silver. On a hot summer day when cell temperature reaches 65°C (40°C above the 25°C STC baseline), the Waaree WS-440 retains 94.0% of its rated power while the other retains 93.0%. While the numerical gap is modest, it still accumulates over decades of summer production, especially in southern latitudes with prolonged peak heat hours.
Warranty Coverage
The Aptos Solar DNA-144-MF26 440W Silver is backed by a 25-year product warranty and 30-year performance guarantee, while the Waaree WS-440 offers 12-year product and 25-year performance coverage. The Aptos Solar DNA-144-MF26 440W Silver provides 13 additional years of defect protection, covering manufacturing issues, material failures, and premature performance loss. Based on their published degradation rates (1% first year then 0.54%/year for Aptos Solar DNA-144-MF26 440W Silver; 1% first year then 0.4%/year for Waaree WS-440), after 25 years the Aptos Solar DNA-144-MF26 440W Silver should retain approximately 86.0% of original output versus 89.4% for the Waaree WS-440. This 3.4 percentage point gap in end-of-life output meaningfully impacts lifetime energy economics.
Physical Dimensions & Weight
The Aptos Solar DNA-144-MF26 440W Silver measures 2095×1039×40mm and weighs 24.1 kg, while the Waaree WS-440 measures 1722×1134×30mm at 21.5 kg. 2.18 m² of panel area for the Aptos Solar DNA-144-MF26 440W Silver versus 1.95 m² for the Waaree WS-440. The Waaree WS-440 is 2.6 kg lighter per panel, which reduces structural load requirements on the roof and makes handling easier during installation. For a 20-panel system, that is a total weight difference of 52 kg. The more compact Waaree WS-440 may be easier to fit on irregularly shaped or space-limited rooftops.
Specification Comparison
| Specification | Aptos Solar DNA-144-MF26 440W Silver | Waaree WS-440 |
|---|---|---|
| Power | 440W | 440W |
| Efficiency | 20.21% | 21.8% |
| Power Density | 18.8 W/sq ft | 20.9 W/sq ft |
| Cell Type | PERC Mono | TOPCon N-type |
| Bifacial | No | No |
| Weight | 24.1 kg | 21.5 kg |
| Temp Coefficient | -0.35%/°C | -0.3%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 4000 Pa | 2400 Pa |
| Product Warranty | 25 years | 12 years |
| Performance Warranty | 30 years | 25 years |
| Degradation (Year 1) | 1% | 1% |
| Annual Degradation | 0.54% | 0.4% |
| Country | Vietnam | India |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Waaree WS-440The Waaree WS-440 achieves 21.8% efficiency versus 20.21% — a 1.6 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 0.0 kW more total system capacity, or 0 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: Waaree WS-440The Waaree WS-440 has a better temperature coefficient of -0.3%/°C versus -0.35%/°C. On a 45°C summer day (20°C above STC), the winner retains 94.0% of rated power versus 93.0%. The difference is modest but accumulates over 25 years of summer production.
3. Durability & Warranty
Winner: Aptos Solar DNA-144-MF26 440W SilverAptos Solar DNA-144-MF26 440W Silver leads with a 25-year product warranty versus 12 years. Waaree WS-440 degrades more slowly at 0.4% per year versus 0.54%. After 25 years, expect 86.0% vs 89.4% of original output for Aptos Solar DNA-144-MF26 440W Silver and Waaree WS-440 respectively.
4. Power Output
Winner: TieBoth panels deliver 440W — identical power output per panel. System cost per watt will be the deciding factor.
5. Cell Technology
Winner: Waaree WS-440The Aptos Solar DNA-144-MF26 440W Silver uses PERC Mono: PERC (Passivated Emitter Rear Cell) is the current mainstream technology, offering good efficiency at the lowest manufacturing cost. The Waaree WS-440 uses TOPCon N-type: TOPCon (Tunnel Oxide Passivated Contact) adds a thin tunnel oxide layer to reduce recombination losses, achieving higher efficiency than PERC while being manufacturable on existing production lines. TOPCon N-type represents a newer generation technology with a longer performance runway as manufacturing matures.
Aptos Solar DNA-144-MF26 440W Silver
Aptos Solar DNA-144-MF26 Silver is a 440W monofacial panel with silver frame, optimized for commercial and utility-scale installations where aesthetics are less critical.
Pros
- + Silver frame option at lower cost
- + 440W output with 144 half-cut cells
- + 30-year performance warranty
- + Ideal for utility and ground-mount applications
Cons
- - Silver frame less aesthetic for residential rooftops
- - 20.21% efficiency is moderate
- - No bifacial capability
Waaree WS-440
The Waaree WS-440 is a 440W residential-format TOPCon N-type panel in the standard 108-cell configuration, manufactured at Waaree's state-of-the-art facilities in Gujarat, India. At 21.8% efficiency, it competes directly with Chinese TOPCon panels while offering Indian supply chain diversification. The standard 1722 x 1134mm form factor ensures compatibility with all major racking systems. Waaree's rapidly expanding US distribution makes this one of the most accessible Indian-made panels in the North American market.
Pros
- + Indian-manufactured — non-Chinese supply chain alternative
- + 21.8% efficiency competitive with Chinese TOPCon leaders
- + Standard 108-cell residential format — universal racking compatibility
- + -0.30%/°C temp coefficient for hot climate performance
- + Highly competitive pricing — among the lowest-cost TOPCon panels
- + Waaree's expanding US distribution improves availability
Cons
- - 12-year product warranty shorter than 25-year leaders
- - Indian manufacturing quality perception still developing vs established brands
- - US installer familiarity and support network still growing
- - No bifacial option in this residential format
Choose Aptos Solar DNA-144-MF26 440W Silver If...
- ✓ Long-term warranty protection is a top priority and you plan to stay in your home for 25+ years
- ✓ Utility-scale and commercial ground-mount installations where silver frame aesthetics are acceptable and cost savings matter.
Choose Waaree WS-440 If...
- ✓ Your roof space is limited and you need maximum power per panel
- ✓ You live in a hot climate (Arizona, Texas, Florida) where heat performance matters
- ✓ You want maximum output retention over the system's 25-30 year lifespan
- ✓ You prefer newer cell technology with a longer performance improvement runway
- ✓ Cost-conscious residential installers seeking high-efficiency TOPCon panels from a non-Chinese manufacturer at a competitive price point.
Our Recommendation
We recommend the Aptos Solar DNA-144-MF26 440W Silver for most buyers in this comparison. It wins 1 of 5 key dimensions and offers a clear advantage in the metrics that matter most for a solar panel purchase. The Waaree WS-440 remains a good product, but the Aptos Solar DNA-144-MF26 440W Silver delivers better overall value for the majority of installations.
Frequently Asked Questions
Which is better, Aptos Solar DNA-144-MF26 440W Silver or Waaree WS-440?
The Aptos Solar DNA-144-MF26 440W Silver wins this comparison by a clear margin. It offers better long-term durability with 25-year warranty. For most residential installations, the Aptos Solar DNA-144-MF26 440W Silver is the stronger choice.
Which panel is more efficient, Aptos Solar DNA-144-MF26 440W Silver or Waaree WS-440?
The Waaree WS-440 at 21.8% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 1.6 percentage points translates to approximately 0W per panel under standard test conditions.
Which has a better warranty, Aptos Solar DNA-144-MF26 440W Silver or Waaree WS-440?
The Aptos Solar DNA-144-MF26 440W Silver comes with a 25-year product warranty and 30-year performance guarantee. The Waaree WS-440 offers 12-year product and 25-year performance warranties. Aptos Solar DNA-144-MF26 440W Silver provides 13 additional years of product coverage.
Which panel performs better in hot weather?
The Aptos Solar DNA-144-MF26 440W Silver has a temperature coefficient of -0.35%/°C and the Waaree WS-440 is -0.3%/°C. Waaree WS-440 retains more power in heat — important in states like Arizona, Texas, and Florida. A lower (less negative) temperature coefficient is better.
How many Aptos Solar DNA-144-MF26 440W Silver vs Waaree WS-440 panels do I need for an 8 kW system?
For an 8 kW system: you need 19 Aptos Solar DNA-144-MF26 440W Silver panels (440W each) or 19 Waaree WS-440 panels (440W each). Both require the same number of panels.
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Last updated: February 2026