This document describes the operational procedures for approval of solar thermal systems - how approvals are obtained for systems, how systems are certified, how system performance is rated, and how approvals and ratings shall be displayed and used.

This Standard will result in changes to the system EF ratings for many systems.

A comparison of previous and new ratings for a limited
number of generic systems can be viewed here.

An example of the revised Directory of Certified
Solar Water Heating Systems can be viewed here

This document contains the standard minimum technical criteria that need to be met to obtain FSEC certification of a solar thermal system. Criteria are included for design, performance, durability, safety, operation, service, installation, and manuals.

This document contains the standard system and components testing protocols used for testing.