Fireplaces that include the Warnock Hersey mark are available at thousands of fireplace retailers throughout the United States, such as Fireplace Center in Hilo, Hawaii; California Stove & Supply in Concord, California; and Alpine Fireplaces in Boise, Idaho. Warnock Hersey is the safety and performance compliance mark that Intertek provides.
Intertek is a private company that tests, inspects and certifies products from manufacturers around the world. Intertek tests to ensure that products meet quality, health, environmental and safety accountability standards before it undergoes governmental or other regulatory testing. Many companies choose to employ premarket testers to avoid lawsuits in the event of a product malfunction.