Providing continuous capacity modulation for HVAC/R DX systems since 1993 · 100,000+ valves installed in the field

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

Healthcare facility
77%
Fewer compressor starts
~53%
RH held all summer
Longer run-time keeps the coil dehumidifying
20+
Imaging centers, one network
65→45%
RH at 68°F, FDA
100K+
Valves installed
Since 1993 · UL Listed

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

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
Compressor run strips: about 2 to 3 starts with the equipped unit versus about 10 without
Compressor run strips over a representative day: the equipped unit ran long and steady, about 2 to 3 starts versus about 10 without, 218 total versus 951 (Independent Field 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