There’s something kinda sexy about a sultry summer night.

In theory, anyway. But when you’re in the midst of a heat wave with no AC in sight, a sweaty romp is anything but hot.

For those who don’t own an air conditioner (i.e., can’t afford it, don’t want to lug it up to your fourth-floor walk-up, are concerned about global warming), there’s a brilliant — and temporary — solution: Metro Appliance Rental.

The Boston-based company offers AC units for rent. For a reasonable price, you’ll get an oasis of cool as long as you need it. They deliver the thing, install it, and pick it up when you’re done. (No need to find a place to store it come winter.)

Or, say you’ve already got an AC but have no idea how to put it in your window. The Metro crew does it for you evenings and weekends.

So next time there’s a hot summer night, you can invite someone over to, um, chill out.

Metro Appliance Rental (617-359-9903 or metroappliancerental.com).