HiTech Air Solutions is the only company to offer a test protocol guarantee. If the protocol has been followed and there is not at least a 30% reduction on the post-test results (many tests show an 80-90% reduction), then HiTech Air Solutions will offer a refund on the purchase and will reimburse the cost of the pre and post testing up to $300. Details apply. Contact us at info@hitechairreactor.com if you’d like more details on the testing program.