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How Efficient are Window Air Conditioners?


Gofftstown, NH Resident Looks for Ways to Stay Cool

Window air conditioners are relatively inexpensive to buy. However, they are extremely inefficient in cooling a home and in the amount of energy that they use. The air will not circulate throughout the room like you would see with central air conditioning, leaving hot spots. Even the most efficient window air conditioning unit uses more energy to cool a room than central air conditioning.

With summer approaching, a Goffstown resident was looking for ways to keep his home cool. Seeking advice, he contacted Joyce Cooling & Heating about window air conditioners versus central air.

Window Air Conditioning Units Use Lots of Energy to Operate

Compared to central air conditioning, window units use more energy to operate. Central air conditioning must have a minimum EER (Energy-Star rating) of 12, while window units need only reach between 9.4 and 10.7. The technology in central air is much more advanced than that found in a simple window unit, making this able to achieve a more energy efficient operation. Window units typically only have an off and on setting. Central air conditioning units can be set at specific temperatures, making better use of the energy needed to cool the home.

Central air units also work by removing moisture from the air. Window units do not control these humidity levels, but simply allow the air to pass through. By removing the excess humidity, temperatures can often be set at a higher level while still being comfortable for everyone in the home. The end result is a cool, comfortable home that the central air conditioning is able to keep at a higher temperature setting, requiring less energy to operate.

Air conditioning units installed can be a more expensive undertaking, but over time you and your family can enjoy the comfort of a balanced temperature at home while reducing your energy consumption. The homeowner in Goffstown opted to install central air conditioning in his home, looking at the long-term gain for his family.


Testimonials & Reviews

We had central air conditioning installed last year by Joyce and were very satisfied with the job. Today, John N. serviced the unit and all of the components and he was incredibly thorough and professional. He explained exactly what was serviced and what to avoid (greenery around the outdoor unit). I highly recommend Joyce Cooling & Heating!

Cristina A.

Cristina A.

Jarod was my technician on March 20th. He was professional and courteous as he completed a servicing on my Heathing Unit. He explained what he was cleaning out and system runs great again.

Matt O.

Matt O.

Mitchell P. came to our house today for an issue with our AC. He was great explaining what the problem is and how they were going to take care of it going forward. He was very pleasant and nice to work with, just like everyone at Joyce Cooling and Heating that has been here.

Cindy A.

Cindy A.

Jim and team did a top notch job on our install. The team was professional, courteous and kept the work areas super clean. I was really impressed with the level of professionalism and the knowledge of the system that was installed. They answered all the questions we had! I also really appreciate how flexible they were with our 3 dogs, they did a great job ensuring materials /parts during install kept tidy to ensure the dogs didn't get into anything. Thanks for the great work!

Jill C.

Jill C.

The representative was friendly, professional, and transparent about the work being done. The issue was resolved. My expectations were satisfied.

Stephen T.

Stephen T.

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