Aptos Solar DNA-120-MF26 370W vs CertainTeed Solstice Solar Panel 365W
The Aptos Solar DNA-120-MF26 370W wins this comparison by a decisive margin. It leads in efficiency (20.28% vs 19.9%) and matches or exceeds on warranty (25 vs 10 years). For most residential installations, the Aptos Solar DNA-120-MF26 370W is the stronger choice.
Key Differences
- • Aptos Solar DNA-120-MF26 370W is rated at 370W while CertainTeed Solstice Solar Panel 365W is rated at 365W, a 5W difference.
- • Aptos Solar DNA-120-MF26 370W achieves 20.28% efficiency vs 19.9% for the other, a 0.4 percentage point gap.
- • Aptos Solar DNA-120-MF26 370W comes with a 25-year product warranty vs 10 years for the other.
- • Aptos Solar DNA-120-MF26 370W uses PERC Mono cells while CertainTeed Solstice Solar Panel 365W uses Monocrystalline PERC cells, representing different technology generations.
Specifications Breakdown
Module Efficiency
The Aptos Solar DNA-120-MF26 370W achieves 20.28% module efficiency compared to CertainTeed Solstice Solar Panel 365W's 19.9%, meaning Aptos Solar DNA-120-MF26 370W converts 0.4 percentage points more sunlight into electricity per square meter. In practical terms, the Aptos Solar DNA-120-MF26 370W produces 200.4 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-120-MF26 370W delivers 370W per panel versus 365W for the CertainTeed Solstice Solar Panel 365W, a 5W difference per module. To build an 8 kW residential system, you would need 22 Aptos Solar DNA-120-MF26 370W panels or 22 CertainTeed Solstice Solar Panel 365W panels. Despite the per-panel wattage difference, both require the same number of panels for this system size due to rounding. Higher wattage per panel is particularly valuable for commercial-scale installations where panel count directly impacts balance-of-system costs.
Temperature Coefficient
Both panels share an identical temperature coefficient of -0.36%/°C, meaning they lose power at the same rate as cell temperature rises above the 25°C standard test baseline. At 65°C cell temperature, both retain 92.8% of rated power. Neither panel has a thermal performance advantage, which makes this specification a non-factor in the comparison.
Warranty Coverage
The Aptos Solar DNA-120-MF26 370W 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-120-MF26 370W 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-120-MF26 370W; 2% first year then 0.55%/year for CertainTeed Solstice Solar Panel 365W), after 25 years the Aptos Solar DNA-120-MF26 370W 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-120-MF26 370W measures 1762×1048×35mm and weighs 20.5 kg, while the CertainTeed Solstice Solar Panel 365W measures 1755×1044×40mm at 21.6 kg. 1.85 m² of panel area for the Aptos Solar DNA-120-MF26 370W versus 1.83 m² for the CertainTeed Solstice Solar Panel 365W. Their weights are closely matched, so neither panel imposes a significantly different structural load on the mounting system. Similar footprints mean both panels fit comparably on standard residential rooftop configurations.
Specification Comparison
| Specification | Aptos Solar DNA-120-MF26 370W | CertainTeed Solstice Solar Panel 365W |
|---|---|---|
| Power | 370W | 365W |
| Efficiency | 20.28% | 19.9% |
| Power Density | 18.6 W/sq ft | 18.5 W/sq ft |
| Cell Type | PERC Mono | Monocrystalline PERC |
| Bifacial | No | No |
| Weight | 20.5 kg | 21.6 kg |
| Temp Coefficient | -0.36%/°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-120-MF26 370WThe Aptos Solar DNA-120-MF26 370W achieves 20.28% efficiency versus 19.9% — a 0.4 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 0.1 kW more total system capacity, or 1 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: TieBoth panels share a temperature coefficient of -0.36%/°C — identical heat tolerance.
3. Durability & Warranty
Winner: Aptos Solar DNA-120-MF26 370WAptos Solar DNA-120-MF26 370W leads with a 25-year product warranty versus 10 years. Aptos Solar DNA-120-MF26 370W 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-120-MF26 370W and CertainTeed Solstice Solar Panel 365W respectively.
4. Power Output
Winner: Aptos Solar DNA-120-MF26 370WThe Aptos Solar DNA-120-MF26 370W delivers 370W versus 365W per panel — 5W more. For an 8 kW system, you need 22 panels with the higher-wattage option versus 22 panels, saving 0 panels and the associated racking and labor costs.
5. Cell Technology
Winner: TieThe Aptos Solar DNA-120-MF26 370W uses PERC Mono: 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-120-MF26 370W
Aptos Solar DNA-120-MF26 is a 370W all-black residential panel with DNA technology, designed for aesthetic rooftop installations with strong value pricing.
Pros
- + All-black design for aesthetic residential rooftops
- + Lightweight at 20.5 kg
- + Budget-friendly price per watt
- + 30-year performance warranty
Cons
- - Lower 370W output requires more panels
- - 20.28% efficiency below premium tier
- - No bifacial option in this model
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-120-MF26 370W 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 want maximum output retention over the system's 25-30 year lifespan
- ✓ Budget-conscious homeowners who want an attractive all-black panel with reliable performance and long warranty coverage.
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-120-MF26 370W is the decisive winner in this solar panel comparison, outperforming the CertainTeed Solstice Solar Panel 365W in 3 of 5 dimensions. Unless you have a specific requirement that the CertainTeed Solstice Solar Panel 365W uniquely addresses, the Aptos Solar DNA-120-MF26 370W is the stronger choice for virtually every installation scenario.
Frequently Asked Questions
Which is better, Aptos Solar DNA-120-MF26 370W or CertainTeed Solstice Solar Panel 365W?
The Aptos Solar DNA-120-MF26 370W wins this comparison by a decisive margin. It leads in efficiency (20.28% vs 19.9%) and matches or exceeds on warranty (25 vs 10 years). For most residential installations, the Aptos Solar DNA-120-MF26 370W is the stronger choice.
Which panel is more efficient, Aptos Solar DNA-120-MF26 370W or CertainTeed Solstice Solar Panel 365W?
The Aptos Solar DNA-120-MF26 370W at 20.28% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 0.4 percentage points translates to approximately 5W per panel under standard test conditions.
Which has a better warranty, Aptos Solar DNA-120-MF26 370W or CertainTeed Solstice Solar Panel 365W?
The Aptos Solar DNA-120-MF26 370W 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-120-MF26 370W provides 15 additional years of product coverage.
Which panel performs better in hot weather?
The Aptos Solar DNA-120-MF26 370W has a temperature coefficient of -0.36%/°C and the CertainTeed Solstice Solar Panel 365W is -0.36%/°C. Both handle heat equally. A lower (less negative) temperature coefficient is better.
How many Aptos Solar DNA-120-MF26 370W vs CertainTeed Solstice Solar Panel 365W panels do I need for an 8 kW system?
For an 8 kW system: you need 22 Aptos Solar DNA-120-MF26 370W panels (370W each) or 22 CertainTeed Solstice Solar Panel 365W panels (365W each). The Aptos Solar DNA-120-MF26 370W requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026