- ConsumerAffairs reviewer rating: 2.7
- Warranty: 25 years (system)
- Payment options: Cash, lease, loan
- Availability: Some states
- ConsumerAffairs reviewer rating: 4.0
- Warranty: 25+ years (product and labor)
- Payment options: Not disclosed
- Availability: Arizona, California, Nevada and Texas
- ConsumerAffairs reviewer rating: 3.2
- Warranty: 25 years (product and performance)
- Payment options: Cash, lease, loan, PPA
- Availability: 23 states
