LAS VEGAS (FOX5) — With summer heat settling in, many people are cranking up the air conditioner—or shopping for a new one. But Consumer Reports says choosing the wrong size unit or skipping basic maintenance can leave you uncomfortable and paying more than necessary on your energy bills.
Consumer Reports tests air conditioners in extreme conditions to see how well they cool, how efficiently they operate, and how easy they are to use. According to CR’s experts, one of the biggest mistakes consumers make is buying an air conditioner that’s too large for the space they’re trying to cool.
An oversized unit may cool a room quickly, but it often shuts off before removing enough humidity from the air. That can leave a room feeling cold and clammy instead of comfortably cool. On the other hand, an undersized unit may run constantly and struggle to keep up on the hottest days.
Before purchasing a new air conditioner, Consumer Reports recommends measuring your room carefully and using the manufacturer’s sizing guidelines to determine the right cooling capacity. Factors such as ceiling height, sun exposure, and the number of people typically using the room can also affect the size you need.
If you already have an air conditioner, regular maintenance can help it perform better and last longer. Consumer Reports suggests cleaning or replacing filters according to the manufacturer’s recommendations. Dirty filters restrict airflow, forcing the unit to work harder and potentially increasing energy costs.
Window air conditioners also benefit from cleaning the exterior vents and making sure the unit is properly sealed around the window. Gaps can allow hot air to leak in and cool air to escape, reducing efficiency.
In Consumer Reports’ testing, several models earned high marks for cooling performance and energy efficiency, including top-rated options like the LG LW8024IVSM and the Mitsubishi HM Series MZ-HM12NA
Features like programmable thermostats, sleep modes, and Energy Star certification can also help reduce electricity use while keeping your home comfortable.
The bottom line: choosing the right-size air conditioner and keeping it properly maintained can help you stay cool all summer long—without overspending on energy bills.
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