Summer is just around the corner, bringing along with it the sweltering heat and the usual spike in electric bills due to running the air conditioner frequently.

NYC is gearing up for its first heat wave of the season, with forecasters predicting temperatures to reach a high of 100 degrees next week.

Thankfully, there is an expert-backed trick that can solve New Yorkers’ sweltering problems.

To save yourself and your wallet — an expert recommends utilizing a fan in a specific way to keep the temps inside your home nice and cool.

When looking to cool down, many individuals instinctively position a fan to blow air directly at themselves. However, according to Les Roberts, an energy specialist from Bionic, it is more effective to direct fans out of the window.

“Opening opposite windows or doors allows air to flow through,” Roberts said.

His reasoning is based on the concept that with two windows open, a fan can help expel the hot air from inside the room, allowing cooler air to flow in from the opposite window.

Sounds genius.

“For even better airflow, you can place a second fan facing inward at the opposite opening to pull cooler air into the room, creating a strong cross-breeze,” he told the outlet.

To reap the effects of this tip, the expert said people should do this in the early mornings or later evenings — the coolest parts of the day.

“It’s a simple trick that could make a noticeable difference, especially at night, when outdoor temperatures drop,” he said.

This simple yet effective trick seems to be one that some people weren’t aware of, according to the comment section of a viral TikTok that demonstrated it.

“When he says if we point the fan out the open window, it will cool the room down quicker and he’s right,” text read in the video with over 2 million views.

“wait how do i do this?? can i just point a fan out the window or do i need another window open in the house for a breeze to come from??” one commenter asked.

“Why am I learning more on TikTok than I learned in school?” asked someone else.

While many others chimed in, agreeing that this hack is a game-changer.

“yuppp bathroom window open, bedroom window open with fan pointing out, cool in minutes,” a comment read.

“I have my fan right in front of one open window to suck cool air into my room, and another window open so the warm air gets pushed out. Bliss,” agreed someone else.

“I’ve always pointed my fan out of the window and opened a window elsewhere, open the door and you’re then funneling cool air through the gaff!” read another comment.