If you're looking for the perfect ozone generator to use for commercial applications this is it. Ideal for frequent use in harsh conditions to remove heavy odors. Recommended for shock treatments (high-intensity) up to 1500sqft or for whole house deodorization (low-intensity) up to 4500sqft. Contains no cheap Chinese components, gimmicks, or unnecessary features. Produces maximum levels of ozone faster than ordinary ozone machines to stop odors at their source. Add individual accessories (see shop) to increase performance and efficiency. Long term lifespan with a ten year guarantee on the transformer. Minimal maintenance with no experience required. Includes easy instruction guide, friendly support, and lifetime trade-in upgrade credit. Thousands sold since 2008 with over 99% success rating. Made in Cleveland, Ohio and shipped direct.