The in-house vs. mobile van decision is one of the most consequential operational choices in hearing conservation program administration. Cost per test, employee downtime, scheduling flexibility, record custody, and program quality all differ significantly between the two models. This guide provides the data to make that decision correctly.
Soundtrace is an in-house audiometric testing platform that replaces annual mobile van visits with continuous, on-site testing — employees test in under 9 minutes, records are always audit-ready, and professional oversight is built into the system.
In-house testing costs $15–$30 per test at scale; mobile vans typically run $45–$80 per test. Downtime is also dramatically lower in-house: under 9 minutes versus 30–45 minutes per employee for a van visit.
Direct cost comparison
| Cost Factor | Mobile Van | In-House (Soundtrace) |
|---|---|---|
| Per-test cost | $45–$80 | $15–$30 at scale |
| Mobilization fee | $500–$2,000 per visit | None |
| Average employee downtime | 30–45 min per employee | Under 9 min per employee |
| Professional oversight fee | Included (embedded in van price) | Included in Soundtrace platform |
| Record storage | Held by vendor; export fees common | Owned by employer; no export fee |
At 200 enrolled employees, the difference between a $60 mobile van rate and a $20 in-house rate is $8,000 per annual testing cycle — before accounting for productivity cost. At 500 employees, that gap reaches $20,000 per year. For most operations with more than 100 enrolled employees, in-house testing pays for the equipment investment within 2–3 years.
▶ Bottom line: The per-test cost gap between mobile vans and in-house testing is $25–$50 per employee. For facilities with more than 100 enrolled workers, annual savings typically exceed equipment cost within 2 years.
Hidden costs of mobile vans
The invoice cost of a mobile van visit understates total cost because it omits productivity losses: queue and wait time; supervisor coordination time; rescheduling costs for employees who miss the annual van visit (individual clinic visits at 2.5+ hours each); record access latency (van vendors typically provide results 2–4 weeks after testing, compressing the OSHA 21-day notification window); and record export fees when changing vendors.
Quality and compliance considerations
| Quality Factor | Mobile Van | In-House |
|---|---|---|
| Professional oversight timeliness | Remote review often delayed 2–4 weeks | Can be immediate with integrated platform |
| STS notification timeline | Dependent on vendor turnaround; may compress the 21-day OSHA window | Immediate STS flag; employer controls the timeline |
| Test quality consistency | Variable — depends on van technician assigned | Consistent — same equipment, same protocol |
| Calibration records auditability | Held by vendor; employer has no direct visibility | Employer controls; directly auditable |
Scheduling flexibility
Mobile van testing is episodic — the van comes once a year, and the entire workforce must cycle through that day. In-house testing allows scheduling throughout the year. New hires can receive their baseline within 6 months of first exposure without waiting for the next van visit. The 12-month individual cycle can be tracked and met for each person independently rather than managed as a group event.
▶ Bottom line: Mobile vans require you to test everyone on one or two days per year. In-house testing allows you to test any employee any day, meeting the per-employee 12-month cycle requirement without operational disruption.
Record ownership and access
When a mobile van vendor holds your audiometric records: vendor going out of business or being acquired may result in records not transferring cleanly; export fees when switching vendors are often not disclosed upfront; format incompatibility when importing records to a new platform; delays in accessing records during OSHA inspections or workers’ compensation claims. In-house testing with an employer-controlled platform means records are immediately accessible, in a format you control, with no vendor intermediary.
Which model is right for your facility?
| Facility Profile | Recommended Model |
|---|---|
| Under 50 enrolled employees, single site | Mobile van or clinic referral; in-house investment may not justify ROI |
| 50–150 enrolled employees, stable workforce | In-house begins to be cost-effective; evaluate based on turnover and scheduling complexity |
| 150+ enrolled employees, any site | In-house almost always economically superior; ROI typically within 18–24 months |
| High turnover (construction, manufacturing) | In-house essential — constant baseline intake requirement makes annual van visits impractical |
Frequently Asked Questions
Typically $15–$30 per test at facilities with 100+ enrolled employees, factoring in equipment amortization, maintenance, and platform costs. Initial equipment investment typically ranges from $5,000–$20,000 depending on booth requirements and audiometer type.
Typically $45–$80 per employee tested, plus a mobilization fee of $500–$2,000 per van visit. Total annual cost for a 200-employee testing day often runs $12,000–$18,000 depending on region and vendor.
Records may be inaccessible, transferred to an acquiring company without notice, or require legal action to recover. Employers are still responsible for retention regardless of vendor status. In-house platforms under employer control eliminate this dependency entirely.
Replace your mobile van with in-house testing that costs less and works better
Soundtrace delivers in-house audiometric testing at $15–$30 per test, with under-9-minute employee turnaround, automatic STS flagging, and professional oversight built in.
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