Can Two-Stage Cooling Benefit Your Home?

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Can Two-Stage Cooling Benefit Your Home?

An innovative upgrade for central cooling systems that works well in our region is two-stage cooling. Such a system contains technology that tells the compressor how fast to run based on the amount of cooling needed. Most of the time it will run at its slower speed. A single-stage system only runs at high speed, which creates some issues with energy consumption, indoor comfort, and the long term performance of the equipment.

Energy Savings

The compressor for an air conditioner changes the pressure of the refrigerant that removes the heat from the air. It’s the hardest working, moving part inside cooling systems and it works more efficiently when it can run more slowly for a longer period.

The compressor consumes the most electricity when it first starts up, which is also when most of the wear occurs. A system that runs for longer periods in slower cycles doesn’t start and stop frequently, and consequently lasts longer and uses less electricity.

Increased Comfort

Since the air handler for a two-stage cooling system continues to move air until the compressor shuts off, rooms further from the air handler receive more cooled air, helping them reach and maintain cooler temperatures. Increased running time also improves the air quality, since more air goes through the air filter. Two-stage systems run more quietly inside and out, an important consideration if the air handler or condenser sits close to bedroom or living areas.

Two-stage systems remove excess humidity, an important benefit of air conditioning. Not only does excess humidity make you feel warmer, it can harm your home and your health. A system that runs slower for longer periods will have time to condense more water vapor without having to turn the temperature down as you would with a single-speed system. Lower humidity levels in the summer improve air quality by reducing the dust mite population and lowering mold growth.

Although a two-stage cooling system will cost more initially, it will pay for itself in energy savings and greater indoor comfort. To learn more, contact Roth Heating & Cooling, providing HVAC services for Portland-area homeowners.

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