Begin with a usable test record
Give the contractor the complete radon report, including the test dates, device or laboratory information, locations and any relevant conditions noted by the testing professional. A number copied from a message loses the context needed to interpret it. Ask a qualified radon professional whether the existing result is suitable for planning or whether additional measurement is needed before a mitigation approach is selected.
Describe the occupied spaces and any planned change in their use. Include renovations, additions, earlier mitigation work and any reason the test conditions may not represent normal operation. Do not substitute a neighborhood map or a neighbor's result for testing the building. The purpose of the consultation is to establish an appropriate measurement and reduction plan for this property, not to infer its result from a regional pattern.
Check Florida certification for both business and people
Florida's Department of Health states that businesses and individuals providing radon services for compensation need the appropriate certification. Measurement and mitigation are distinct certification categories. Use the department's current certification resources to check the business and the relevant individuals, and ask who is responsible for designing and supervising your work. A testing service should not be assumed to install mitigation systems.
Match the names on the proposal to the names you check. Ask whether any part of the work is subcontracted and how those responsibilities are supervised. Keep certification checks separate from claims made by a directory or an advertisement. The directory helps locate candidates; it does not independently certify their current status or approve a particular mitigation design.
Ask how the building will be diagnosed
Provide information about foundation type, crawlspaces, slabs, additions and access to potential system routes. Ask what diagnostic work the contractor proposes and how the results will guide the design. Different parts of a building may behave differently, so the proposal should explain how the selected system addresses the areas relevant to the measured problem.
EPA's consumer guide describes several reduction approaches and emphasizes selecting a method for the building. Use that as a reason to request an explanation, not as a set of installation instructions. Ask what alternatives were considered and why the proposed route and equipment are appropriate. A quote that supplies a standard fan without discussing the building leaves the diagnostic and design responsibilities unclear.
Review the system route and property impacts
Ask for a sketch showing the proposed collection points, piping, fan where applicable, discharge route and electrical work. Discuss access, appearance, noise and future maintenance without directing the technical design yourself. The contractor should identify how the selected arrangement meets the relevant standards and project requirements. Do not accept an unlabelled line on a drawing as a complete explanation.
Identify penetrations, finishes and areas disturbed by installation. Ask who seals and restores those areas and whether related electrical or other trade work is included. If the building has several occupied units or restricted areas, define access and communication responsibilities. Keep the accepted route with the contract so later changes can be reviewed and documented rather than made without the owner's knowledge.
Make post-installation testing part of the purchase
The contract should specify how performance is measured after the system starts, who arranges the test and who receives the complete report. EPA's consumer guidance calls for post-mitigation testing; the installer should explain the applicable timing and protocol for the project. Do not treat an operating indicator or an audible fan as proof that the indoor radon level has been reduced adequately.
Agree what happens if the result does not meet the contract's stated objective. Ask whether adjustment, additional diagnostic work or another test is included and what could incur a separate charge. A performance promise should identify the measurement conditions and remedy, not merely use a reassuring phrase. Keep any independent testing option clear so responsibility for the result is not confused with responsibility for equipment installation.
Compare warranties and ongoing service
Separate equipment warranty, workmanship and any radon-reduction commitment. Ask who responds to a stopped fan, damaged pipe, failed indicator or unsatisfactory retest, and what diagnostic or travel fees may apply. If the system needs continuous operation, obtain the owner's instructions for its normal use and for any interruption. Do not assume that a warranty includes every component or every future building condition.
Ask how renovations, altered ventilation or changes in occupied space affect the need for reassessment. A system designed for the present building should be recorded so future contractors do not unknowingly alter it. Request a service plan that distinguishes owner observations from professional testing and maintenance. The owner should know how to recognize a concern without being expected to interpret every technical reading.
Accept the measured result and preserve the records
At handover, obtain the design or as-built record, equipment details, operating instructions, warranty, certification information and post-installation test report. Have the installer demonstrate the owner-visible indicator and explain what it does and does not show. Label the system and retain contact information where it can be found by the next occupant or property manager.
Record unresolved items and the agreed follow-up before closing the project. Keep the original and later test reports together so future measurements have context. If the property will be sold or rented, ask the appropriate professional about the documents and disclosures relevant to that transaction rather than relying on a generic contract paragraph. The useful outcome is a documented system with measured performance and a clear maintenance route.
Sources and scope
Official sources support the regulatory and technical points identified below. General comparison advice is editorial guidance. Local examples apply only to their stated jurisdiction; a site assessment determines which conditions apply to your property.
- Florida Department of Health ↗
Florida requires appropriate certification for businesses and individuals providing radon services for compensation, with measurement and mitigation categories.
- U.S. EPA ↗
Consumer guidance describes building-specific radon reduction approaches and post-mitigation testing.