Radon Gas Testing, Mitigation, Maintenance Services provided throughout Northern Virginia. Radon Defense is a locally owned and operated company providing solutions for all Radon Needs. We employ the latest in technology, tools, supplies, and equipment. Our services are provided for Home Owners, Home Buyers, Home Sellers, Real Estate Agents, and Home Inspectors. We are active members of AARST and NRPP. Radon Defense provides services in Arlington County, Fairfax County, Faquier County, Loudon County, Prince William County, and Stafford County. If you are in need of Radon Services call us at Radon Defense Today!