Serving the New York metropolitan area...including the 5 boroughs, Long Island, Westchester & Rockland Counties, and New Jersey.

Lane Associates - Heating & Air Conditioning

The "Swing Season" is also FREE Cooling Season!

      During this time of year in the Northeast when transitioning from Winter back into Summer, we experience a difficult season for meeting HVAC demands. Temperature and humidity is fluctuating, and this fluctuation can result in the potential need for both heating and cooling to switch back and forth, sometimes even during the same day. But the "Swing Season" also offers a unique opportunity; it is also "FREE" Cooling season, when economizers can be utilized to take advantage of already cool outside air. You may be wondering: Are my economizers operational and ready to take advantage of cool outside air? Exactly what benefits do economizers actually provide? Below are some key points to consider as we enter the HVAC "Swing Season."  

Economizers Provide "FREE" COOLING

Economizers utilize cool outside air when it is available.  This reduces the need for a compressor to run and produce mechanically cooled air, therefore reducing energy consumption.

Below is an example of potential savings resulting in using "FREE" Cooling from an economizer, available during the "Swing Season":

 

Assuming a compressor draws approximately 15 amps to run on a cooler day, at 220v, that equates to 3.3kW

With a utility cost of approximately 20 cents per kWH, that means it costs about 66 cents per hour to run the compressor.

Let's assume you have 10 Rooftop Units at your building that is occupied 40 hours per week.  (that's 66centsx40hoursx10units)  Therefore, by utilizing the "Free" Cooling from economizers, you could save approximately $264.00 per week!

 

A Closer Look at Economizers

As the diagram to the right shows, economizers bring outside air into a building. Instead of being re-circulated, the return air from a space is directed outside and the cool outside air is brought in. If the outside air is particularly cold, the economizer may mix it with the return air so its temperature and humidity fall within the desired range for the equipment.