Copeland™ scroll two-stage compressors

Precision in humidity and temperature control, coupled with substantial energy savings, make two-stage scroll compressors a practical choice.

Improved Humidity and Temperature Control

Air conditioning systems using Copeland two-stage compressors normally operate at 65 percent of full capacity, allowing longer cycles that reduce relative humidity and temperature fluctuations. As outdoor temperatures rise and demand for air conditioning increases, the thermostat will detect and signal the scroll compressor to shift to 100 percent capacity until the interior temperature set point is reached.

Copeland 100

With over 200 million installations, Copeland compressors demonstrate proven performance, quality and reliability.

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Residential Application

Copeland scroll two-stage 1.5-5T ZPSK5

For residential and light commercial applications

Copeland scroll two-stage 1.5-5T ZPSK6

Next-generation two-stage compressor for residential and light commercial applications

Copeland scroll two-stage 1.5-5T ZPSK7

2023 regulatory-compliant compressor for residential and light commercial applications.

Commercial Application

Copeland scroll two-stage compressor for light commercial rooftop equipment

Copeland scroll two-stage 6-10T ZPSKC

2018 regulatory compliant compressor for light commercial rooftop equipment

How does a Copeland scroll two-stage compressor work?

Two-stage modulation adjusts compressor capacity by bypassing a portion of the gas in the scroll back to suction. By doing so, the compressor can closely match the heating or cooling demand allowing it to cycle less frequently.
It uses internal pressure to actuate the modulation scheme, requiring only a low voltage signal from the thermostat to the controlling solenoid valve on the compressor. When actuated, output shifts from 65 percent (part-load) to 100 percent (full load) capacity to adjust for increased load requirements.
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