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How the STE4 System Works: Complete Guide

January 18, 2026
SolarTek Energy

The STE4 solar attic pool heating system is an elegant solution that harnesses the natural heat in your attic to warm your pool. Let's dive into how this innovative technology works.

The Core Components

Solar Collectors: These are installed in your attic and absorb the heat naturally generated by sunlight. They don't require roof modifications—they simply sit on your attic floor.

Motorized CPVC Valve: This intelligent valve automatically opens and closes based on temperature readings, controlling the flow of water between your pool and the solar collectors.

Temperature Sensors: Multiple sensors monitor attic temperature, pool water temperature, and system status, providing real-time feedback to the control system.

Control Unit: The automated control system manages all operations, making decisions about when to transfer heat based on temperature differentials.

How It Works Step-by-Step

1. Heat Collection: Solar collectors in your attic absorb heat from the sun. Even on cloudy days, attic temperatures can reach 100°F+.

2. Temperature Monitoring: Sensors continuously monitor the temperature in the attic and your pool water.

3. Automatic Activation: When attic temperature exceeds pool water temperature by a set amount (typically 5-10°F), the control unit signals the motorized valve to open.

4. Heat Transfer: Pool water is circulated through the solar collectors, where it absorbs heat from the attic air.

5. Automatic Shutdown: Once your pool reaches the target temperature, the valve automatically closes, preventing overheating.

Key Features

Adjustable Thermostat: Set your desired pool temperature (typically 78-85°F). The system automatically maintains it.

Status Indicators: LED indicators show system operation, temperature readings, and any alerts.

Very Quiet Operation: The system operates at just 62 dB—quieter than a normal conversation.

Automatic Safety Shutoff: Multiple safety features prevent overheating and system damage.

Performance Specifications

BTU Rating: 60,000 BTU/hour at 32°F ambient

BTU Transfer Range: 20,000-150,000 BTU/hour depending on conditions

Power Consumption: 115VAC, 3.6 AMPS, 405 Watts maximum

Dimensions: 27"H × 17"D × 47"W

Maintenance

The STE4 requires minimal maintenance:

  • Clean filters quarterly
  • Check thermostat settings monthly
  • Inspect connections annually

Warranty

The STE4 system includes a comprehensive 3-year warranty covering all components and labor.

Ready to Experience It?

Contact SolarTek Energy to schedule a free consultation and see the STE4 system in action.

Ready to Get Started?

Contact our team to discuss how the STE4 system can save you money on pool heating and AC costs.