Aptos Solar DNA-144-BF26 440W vs CertainTeed Solstice Solar Panel 365W
The Aptos Solar DNA-144-BF26 440W wins this comparison by a decisive margin. It leads in efficiency (20.21% vs 19.9%) and matches or exceeds on warranty (25 vs 10 years). For most residential installations, the Aptos Solar DNA-144-BF26 440W is the stronger choice.
Key Differences
- • Aptos Solar DNA-144-BF26 440W is rated at 440W while CertainTeed Solstice Solar Panel 365W is rated at 365W, a 75W difference.
- • Aptos Solar DNA-144-BF26 440W achieves 20.21% efficiency vs 19.9% for the other, a 0.3 percentage point gap.
- • Aptos Solar DNA-144-BF26 440W comes with a 25-year product warranty vs 10 years for the other.
- • Aptos Solar DNA-144-BF26 440W has a superior temperature coefficient of -0.35%/°C vs -0.36%/°C, retaining more power in hot climates.
- • Aptos Solar DNA-144-BF26 440W uses PERC Mono Bifacial cells while CertainTeed Solstice Solar Panel 365W uses Monocrystalline PERC cells, representing different technology generations.
Specifications Breakdown
Module Efficiency
The Aptos Solar DNA-144-BF26 440W achieves 20.21% module efficiency compared to CertainTeed Solstice Solar Panel 365W's 19.9%, meaning Aptos Solar DNA-144-BF26 440W converts 0.3 percentage points more sunlight into electricity per square meter. In practical terms, the Aptos Solar DNA-144-BF26 440W produces 202.1 watts per square meter of panel area while the CertainTeed Solstice Solar Panel 365W produces 199.2 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
The Aptos Solar DNA-144-BF26 440W delivers 440W per panel versus 365W for the CertainTeed Solstice Solar Panel 365W, a 75W difference per module. To build an 8 kW residential system, you would need 19 Aptos Solar DNA-144-BF26 440W panels or 22 CertainTeed Solstice Solar Panel 365W panels. Choosing the higher-wattage option saves 3 panels, reducing total racking hardware, wiring, and installation labor costs. Higher wattage per panel is particularly valuable for commercial-scale installations where panel count directly impacts balance-of-system costs.
Temperature Coefficient
The Aptos Solar DNA-144-BF26 440W has a temperature coefficient of -0.35%/°C versus -0.36%/°C for the CertainTeed Solstice Solar Panel 365W. On a hot summer day when cell temperature reaches 65°C (40°C above the 25°C STC baseline), the Aptos Solar DNA-144-BF26 440W retains 93.0% of its rated power while the other retains 92.8%. 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-BF26 440W is backed by a 25-year product warranty and 30-year performance guarantee, while the CertainTeed Solstice Solar Panel 365W offers 10-year product and 25-year performance coverage. The Aptos Solar DNA-144-BF26 440W provides 15 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-BF26 440W; 2% first year then 0.55%/year for CertainTeed Solstice Solar Panel 365W), after 25 years the Aptos Solar DNA-144-BF26 440W should retain approximately 86.0% of original output versus 84.8% for the CertainTeed Solstice Solar Panel 365W. This 1.2 percentage point gap in end-of-life output meaningfully impacts lifetime energy economics.
Physical Dimensions & Weight
The Aptos Solar DNA-144-BF26 440W measures 2095×1039×40mm and weighs 24.1 kg, while the CertainTeed Solstice Solar Panel 365W measures 1755×1044×40mm at 21.6 kg. 2.18 m² of panel area for the Aptos Solar DNA-144-BF26 440W versus 1.83 m² for the CertainTeed Solstice Solar Panel 365W. The CertainTeed Solstice Solar Panel 365W is 2.5 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 50 kg. The more compact CertainTeed Solstice Solar Panel 365W may be easier to fit on irregularly shaped or space-limited rooftops.
Specification Comparison
| Specification | Aptos Solar DNA-144-BF26 440W | CertainTeed Solstice Solar Panel 365W |
|---|---|---|
| Power | 440W | 365W |
| Efficiency | 20.21% | 19.9% |
| Power Density | 18.8 W/sq ft | 18.5 W/sq ft |
| Cell Type | PERC Mono Bifacial | Monocrystalline PERC |
| Bifacial | Yes | No |
| Weight | 24.1 kg | 21.6 kg |
| Temp Coefficient | -0.35%/°C | -0.36%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 4000 Pa | 2400 Pa |
| Product Warranty | 25 years | 10 years |
| Performance Warranty | 30 years | 25 years |
| Degradation (Year 1) | 1% | 2% |
| Annual Degradation | 0.54% | 0.55% |
| Country | Vietnam | United States |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Aptos Solar DNA-144-BF26 440WThe Aptos Solar DNA-144-BF26 440W achieves 20.21% efficiency versus 19.9% — a 0.3 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 2.3 kW more total system capacity, or 11 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: Aptos Solar DNA-144-BF26 440WThe Aptos Solar DNA-144-BF26 440W has a better temperature coefficient of -0.35%/°C versus -0.36%/°C. On a 45°C summer day (20°C above STC), the winner retains 93.0% of rated power versus 92.8%. The difference is modest but accumulates over 25 years of summer production.
3. Durability & Warranty
Winner: Aptos Solar DNA-144-BF26 440WAptos Solar DNA-144-BF26 440W leads with a 25-year product warranty versus 10 years. Aptos Solar DNA-144-BF26 440W degrades more slowly at 0.54% per year versus 0.55%. After 25 years, expect 86.0% vs 84.8% of original output for Aptos Solar DNA-144-BF26 440W and CertainTeed Solstice Solar Panel 365W respectively.
4. Power Output
Winner: Aptos Solar DNA-144-BF26 440WThe Aptos Solar DNA-144-BF26 440W delivers 440W versus 365W per panel — 75W more. For an 8 kW system, you need 19 panels with the higher-wattage option versus 22 panels, saving 3 panels and the associated racking and labor costs.
5. Cell Technology
Winner: TieThe Aptos Solar DNA-144-BF26 440W uses PERC Mono Bifacial: PERC (Passivated Emitter Rear Cell) is the current mainstream technology, offering good efficiency at the lowest manufacturing cost. The CertainTeed Solstice Solar Panel 365W uses Monocrystalline PERC: PERC (Passivated Emitter Rear Cell) is the current mainstream technology, offering good efficiency at the lowest manufacturing cost. Both are equivalent-generation technologies.
Aptos Solar DNA-144-BF26 440W
Aptos Solar DNA-144-BF26 is a 440W bifacial all-black panel with 144 half-cut cells and up to 30% rear-side energy gain for commercial applications.
Pros
- + Bifacial design with up to 30% additional energy
- + 440W high output with 144 half-cut cells
- + All-black aesthetic
- + 30-year performance warranty
Cons
- - Bifacial gain requires optimized mounting
- - Larger panel dimensions
- - 20.21% efficiency is moderate
CertainTeed Solstice Solar Panel 365W
The CertainTeed Solstice Solar Panel 365W is a conventional residential solar panel from CertainTeed (Saint-Gobain), using monocrystalline PERC half-cut cells. Designed to pair with CertainTeed roofing products for a coordinated roof-and-solar installation through certified roofing contractors.
Pros
- + Made in the USA by Saint-Gobain subsidiary
- + 10-year product warranty — strong for US-manufactured panel
- + Designed for seamless pairing with CertainTeed roofing
- + Half-cut PERC cells for partial shade resilience
- + Available through established roofing contractor network
Cons
- - 19.9% efficiency below current N-Type leaders
- - 365W output lower than modern 400W+ panels
- - Heavier at 21.6 kg than comparable wattage panels
- - Higher cost per watt than budget alternatives
- - Limited distribution outside CertainTeed roofing dealers
Choose Aptos Solar DNA-144-BF26 440W If...
- ✓ Your roof space is limited and you need maximum power per panel
- ✓ You want fewer panels to reach your target system size, reducing racking and labor costs
- ✓ Long-term warranty protection is a top priority and you plan to stay in your home for 25+ years
- ✓ 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
Choose CertainTeed Solstice Solar Panel 365W If...
- ✓ Homeowners doing a combined roof replacement and solar installation through CertainTeed-certified contractors.
Our Recommendation
The Aptos Solar DNA-144-BF26 440W is the decisive winner in this solar panel comparison, outperforming the CertainTeed Solstice Solar Panel 365W in 4 of 5 dimensions. Unless you have a specific requirement that the CertainTeed Solstice Solar Panel 365W uniquely addresses, the Aptos Solar DNA-144-BF26 440W is the stronger choice for virtually every installation scenario.
Frequently Asked Questions
Which is better, Aptos Solar DNA-144-BF26 440W or CertainTeed Solstice Solar Panel 365W?
The Aptos Solar DNA-144-BF26 440W wins this comparison by a decisive margin. It leads in efficiency (20.21% vs 19.9%) and matches or exceeds on warranty (25 vs 10 years). For most residential installations, the Aptos Solar DNA-144-BF26 440W is the stronger choice.
Which panel is more efficient, Aptos Solar DNA-144-BF26 440W or CertainTeed Solstice Solar Panel 365W?
The Aptos Solar DNA-144-BF26 440W at 20.21% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 0.3 percentage points translates to approximately 75W per panel under standard test conditions.
Which has a better warranty, Aptos Solar DNA-144-BF26 440W or CertainTeed Solstice Solar Panel 365W?
The Aptos Solar DNA-144-BF26 440W comes with a 25-year product warranty and 30-year performance guarantee. The CertainTeed Solstice Solar Panel 365W offers 10-year product and 25-year performance warranties. Aptos Solar DNA-144-BF26 440W provides 15 additional years of product coverage.
Which panel performs better in hot weather?
The Aptos Solar DNA-144-BF26 440W has a temperature coefficient of -0.35%/°C and the CertainTeed Solstice Solar Panel 365W is -0.36%/°C. Aptos Solar DNA-144-BF26 440W 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-BF26 440W vs CertainTeed Solstice Solar Panel 365W panels do I need for an 8 kW system?
For an 8 kW system: you need 19 Aptos Solar DNA-144-BF26 440W panels (440W each) or 22 CertainTeed Solstice Solar Panel 365W panels (365W each). The Aptos Solar DNA-144-BF26 440W requires fewer panels, saving on racking hardware and installation labor.
Related Resources
Last updated: February 2026