solar energy for your home

PWS Freeze Safe Solar Water Heater

Our patented freeze tolerant system is an open loop system. Direct heating of the water eliminates the need for heat exchangers, anti-freeze, expansion tanks, extra pumps, pressure gauges, drain back tanks, fill/drain valves, expensive solar heat exchange tanks and costly maintenance common to other types of systems.


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solar renewable energy for your home
PWS Solar Energy Products


Performance and Durability.

An unbeatable combination in solar water heating! Pacific West Solar has been producing and installing quality solar hot water heating systems since 1986. We run one of the valley’s best-equipped test facilities with products more rigorously tested than any standard requires. Our patented solar collectors use all copper absorber plates that are designed to withstand the extreme Arizona environment.

Our all copper absorbers have optically selective coatings and will provide years of consistent performance. Our patented Expansion Control fin/tube assembly reduces thermal stress that adversely effects the performance of other solar collector absorbers. Our collectors carry a 10 year repair or replacement warranty. All systems installed by Pacific West Solar are OG300 certified by the SRCC and have a Solar Fraction of .8.

Freeze Safe Solar Water Heater
The Freeze Safe solar hot water heater is the result of 30 years of product development involving thousands of installations in the Phoenix area.

How It Works - Open Loop System

Closed Loop Systems
Pacific West Solar has closed loop and passive solar water heating systems available for special water heating applications.