What should I ask before choosing a St. Louis installer?
Ask who will perform the work, what current qualifications they hold and how they assess your foundation. Request a clear explanation of the proposed system and examples relevant to your house. A provider should be able to distinguish an ordinary slab project from a mixed foundation, finished lower level or existing system that needs investigation.
Air Sense is the service provider behind this site; the site name does not identify a separate installation company. Bring your full test report rather than only a remembered number. If the estimate depends on conditions that have not been inspected, ask what remains provisional and how a revised scope would be approved.
What should the installation quote include?
The proposal should identify the foundation areas addressed, collection work, sealing, piping and fan arrangement. It should specify electrical responsibilities, any work by another trade, surface restoration and cleanup. Ask who obtains any required project approvals and whether the quoted scope includes them.
Include the operating indicator, owner instructions, follow-up testing and warranty terms in the comparison. Clarify the process for an elevated follow-up result before hiring. A lower total is difficult to evaluate if one proposal leaves out electrical work or finish repairs. Read our system-components guide alongside the quote so unfamiliar terms do not hide a scope difference.
Where should the fan and exhaust go?
Review the entire route, from collection point to outdoor discharge. EPA guidance distinguishes an appropriate unoccupied attic or outdoor fan location from a basement location. Interior piping does not mean the fan can be installed anywhere inside the house. Have the installer explain the proposed placement and applicable requirements.
Walk through visible exterior pipe locations, roof or wall penetrations and future service access. Point out bedrooms, closets, planned additions and areas where appearance matters. Ask for a written route description or sketch before approving changes. An interior route is a property-specific option, not a standard feature of every installation.
How do I prepare, and what happens on installation day?
Confirm access, parking and the areas that need to be cleared. Keep children and pets away from work zones. Show the installer any known concealed utilities and planned remodeling. Do not remove finishes or disturb wiring yourself just to prepare for the appointment.
The crew installs the agreed collection and venting arrangement and completes the relevant sealing, power and operating checks. Ask who will contact you if the approved route needs to change. At handover, review equipment access and the operating indicator. Confirm the expected work duration directly with Air Sense; installation time and the later test-report date are separate scheduling questions.
Can the sump pump remain accessible?
Make pump service a specific design question before a sump cover is changed. Identify the pump, discharge piping and access needed for replacement or inspection. Ask the installer to explain how the proposed cover and penetrations will work with that maintenance need.
Air Sense’s Chesterfield active-sump case study documents one installation with a sealed, accessible sump cover and garage/attic routing. The reported before-and-after observations came from the homeowner’s EcoQube consumer monitor. They are not an independent study or a guaranteed result for another house. The useful lesson is to settle access and routing together.
How do I know the installation worked?
Arrange a follow-up radon test and retain the report with the original measurement and installation records. EPA recommends post-mitigation testing within 30 days, starting no earlier than 24 hours after installation of the operating system. Ask who arranges that test and discuss independent measurement when comparing proposals.
A system indicator shows an operating condition; it does not report the indoor radon concentration. If the follow-up result remains elevated, contact the installer with the complete report and use the agreed diagnostic process. Our guide to evaluating mitigation results explains what evidence to request. The radon-reduction options guide helps distinguish a designed system from temporary changes such as opening windows.
Questions before you book
What affects installation cost?
Foundation layout, access, routing, electrical work and restoration affect the proposed scope. Request an individual written quote instead of assuming another home’s price applies.
Can the same plan serve a basement and crawl space?
Both areas need assessment. Ask which foundation sections the design addresses and whether membrane work is included; do not assume a slab-only proposal covers the crawl space.
Who should I contact to discuss my house?
Contact Air Sense Environmental at 314-664-9807 with your address, test report and foundation details. Mention a sale, renovation or other deadline when arranging the visit.