NBC Selected independently determines what we cover and recommend. When you click on or buy through our links, we earn a commission. Learn more. Cory Fernandez Commerce Editor We don’t always have the ...

Add Yahoo as a preferred source to see more of our stories on Google. Keeping your window AC unit clean helps improve its performance and longevity. This summer has been an absolute scorcher, with ...

When you buy through our links, Business Insider may earn an affiliate commission. Learn more With summer temperatures rising and energy costs at all-time highs, a dirty window air conditioner isn't ...