(408) 432-9900

Solar Thermal Case Studies

The following case studies are examples of Free Hot Water’s solar thermal engineering and design for various applications.


Case Study: Solar Thermal San Francisco Apartment Project that Is Cost Competitive with Natural Gas

Free Hot Water won a prestigious Intersolar Award for the design of a solar hot water and heating system for a San Francisco apartment building. Our design was shown to be cost competitive with natural gas before applying any incentives.

The 3-story, 19,260 sq. ft. renovation project, located at 1731 15th St, will serve as a 50 one-bedroom student apartment complex located near the Mission Dolores section of San Francisco.Download the the Award Winning San Francisco Solar Thermal Project Case Study (PDF)

Case Study: Solar Thermal California LaundromatWoodyPanelsonRoof_opt


Woody’s Laundromat in Oakland, California is washing away its hot water bills with a solar thermal system.

Case Study: Solar Hot Water for a Massachusetts Motel

Massachusetts Solar Hot Water


A  drainback solar thermal system with a 320-gallon tank will offset 80% of a Massachusetts motel’s annual hot water usage.


Case Study: 138-Unit Tucson, Arizona Apartment ComplexZoneVerd1_opt


Through the installation of 48 solar collectors and a 3,500-gallon solar thermal storage tank, Zone Verde is expected to save 67% on its annual water heating costs, or an average of $1,200 per month or more.

Case Study: Solar Hot Water for a California Fitness Solar Thermal Monitoring-Toadal-FitnessCenter


Thanks to Federal and state incentives, a California Fitness center will see a payback time is of 5.45 years.