SunEarth | Cascade 2 Solar Water Heating System | 120 Gallon w/ 4 TR-20

Overview

SunEarth's Cascade 2 is a complete solar water heating system that preheats incoming water before it reaches an existing water heater. This is the 120-gallon version with 4 TR-20 collectors.

Planning a system? Read our guide: How to charge a portable power station with solar panels.

Key benefits

• Uses the sun's heat to reduce the energy needed for water heating.
• Collectors, storage, heat exchanger, and controls are designed to work together.
• Drainback design protects against freezing, even in extreme cold.

Key features

• 120-gallon system with 4 TR-20 collectors
• Dimensions of 97 x 34 in (HxW)
• Max power input of 195 watts
• Max collector area of 96 sq ft
• 3/4-inch potable plumbing

Ideal use

Suited to homes adding solar preheating to an existing water heater, off-grid homes conserving battery power, and high utility-rate areas. SunEarth specifies installation by a qualified professional.

Key specifications

Model / SKU

1672011

Brand

SunEarth

Category

Solar panels

From the manufacturer

Efficient, Reliable Hot Water—Powered by the Sun The SunEarth Cascade 2 120 Gallon hot water system transforms everyday hot water use into a smarter, more efficient experience by harnessing solar thermal energy—capturing the sun’s heat and converting it into usable hot water with impressive efficiency. Designed as a complete, pre-engineered system, it delivers consistent hot water while significantly reducing reliance on traditional energy sources, helping homeowners lower utility costs and live more sustainably. This system is designed specifically as an add-on to an existing water heater, using solar heating to preheat incoming water before it reaches the primary unit—reducing energy demand while ensuring dependable hot water at all times. *Note: This product must be installed by a qualified professional to maintain warranty coverage. Key Benefits: Lower Energy Bills Without Changing Your Routine: Heat your water using the sun and reduce one of the largest energy expenses in your home—often cutting water heating costs by a considerable margin Complete, Pre-Engineered System: Collectors, storage, heat exchanger, and controls are all designed to work together, simplifying installation and ensuring consistent performance. Built for Real Life—All Seasons, All Climates: The drainback design automatically protects the system from freezing, even in extreme cold, so you get reliable performance year-round. Use Cases: Ideal for homeowners who want to reduce energy costs, off-grid systems, where conserving battery power is critical, and homes in high utility-rate areas where energy savings add up quickly. Tech Specs: Product Dimensions (HxW): 97" x 34" Max Power Input: 195 Watts Max Collector Area: 96ft² Potable Plumbing Diameter: 3/4"

Warranty terms mentioned in this description are the manufacturer’s. Our own coverage is the 30-day limited warranty.

Before you order

We confirm compatibility, installation requirements, and delivery details with you during order review, before any payment. Home electrical work may require a qualified installer.

Ask our team whether the 120-gallon Cascade 2 fits your household. Message our team on WhatsApp.