Improving HVAC System Performance since 1993
Steady comfort.
Lower humidity.
Fewer breakdowns.
Make Your HVAC System Run Smarter.
The APR Control and APR‑E Valve add variable capacity to standard DX HVAC equipment to reduce short cycling, improve humidity control, and deliver more consistent performance.
Retrofit these devices to improve performance on rooftop units, split systems, and heat pumps you already own, or have it installed on new equipment.
100,000+ valves installed · Since 1993 · APR Control UL Listed
Who We Help
Pick your role for specs, guides, and the fastest path to an answer.
“These (DAT Trend-Log Data) are so tight no one will believe it.”
Lead engineer, Stratus Designs · APR‑E Valve
“I have been installing the Rawal APR valves for over 20 years plus and never had an issue.”
Jim Hartman · VP, All Florida Mechanical
The root cause
Your equipment is sized for the hottest day of the year. Without modulation, it's oversized 90% of the time.
So it cools the space fast, shuts off, and starts again minutes later. Without consistent run-time, the evaporator coil never removes enough humidity; the result is hot and cold complaints, high humidity, and compressors that fail early.
What we solve
The problems short cycling causes,
and how Rawal Devices fixes each
Oversized HVAC and Short Cycling
The root problem, and the correction.
Humidity Control
Hold humidity by running longer.
HVAC System Reliability
Less compressor wear and tear, plus passive evaporator freeze protection.
Energy Efficiency
Lower compressor power at part load.
Retrofit vs. Replace
Avoid the cycling wear that drives compressors to fail early.
Under identical testing conditions, manufacturer lab testing shows 16% lower compressor power draw at part load with an APR Control.
Have an HVAC challenge?
Let's solve it.
Talk to a Rawal Devices Engineer. It is a real conversation with the people who size and support the product, with a one-business-day response.
In stock. Ships fast. Sized by Rawal Devices Engineering.
Get Expert Help[email protected] · 800‑727‑6447 · rawal.com