Compliance-grade air on standard equipment
Healthcare
High humidity in a healthcare setting can cause Operating Rooms to fall out of compliance and lead to cancelled cases. Avoiding these situations requires a multi-part process; a critical component of the total solution is equipping systems with continuous capacity modulation. The APR Control and APR‑E Valve allow standard DX systems or heat pumps to match capacity to changing load conditions. This extends the run-time of the system and promotes longer periods of active dehumidification. Whether you need suction-pressure or discharge air temperature control, Rawal Devices has the solution for your facility.
APR Control (UL Listed) & APR-E Valve

Why APR Control fits healthcare
Maintain stable conditions. Reduce cycling in critical spaces.
- Field-proven at a major healthcare facility in Virginia: 77% fewer compressor starts, zero failures (Independent Field Study)
- APR Control (mechanical): no power, no wiring, no maintenance on comfort RTUs
- APR‑E Valve (electronic): discharge air held at setpoint, every minute documented for surveyors
- ~53% space RH held through a full summer of patient-facing operation (Independent Field Study)
- Three-connection retrofit: no extended downtime in occupied facilities
Where it matters most
Inside the Facility
Pharmacy & Medication
Controlled medication environments
ORs & Procedure Suites
Critical infection-control support
Research & Clinical Labs
Stable controlled-space operation
Patient Rooms & LTC
Comfort plus equipment protection
Field-verified performance
The Proof, with Qualifiers
- 77% fewer compressor starts (951 vs 218), 3-month independent field study
- ~53% average space RH held through a full summer (Independent Field Study)
- Zero failures since installation (Independent Field Study)
Case study
Field Study
Reliability and Humidity at a Major Healthcare Facility in Virginia
In a 3-month independent field study on two identical rooftop units, the equipped unit logged 218 compressor starts against 951 on the control unit, held ~53% space RH all summer, and has had zero failures since install (Independent Field Study).
Read the case study
Maintain stable conditions. Reduce cycling in critical spaces.
Complimentary application sizing for healthcare projects, with a one-business-day response.
Talk to an Engineer[email protected] · 800‑727‑6447 · rawal.com
