If they're not aired out, attics fill with hot air, moth-eaten clothing, and your memory of where you hid the yearbooks. Ventilate your house-hat with today's Groupon to Superior Attic Fans. This Groupon is valid in 31 Chicagoland zip codes. Choose between the following options:

• For $289, you get an 1,400 cubic-feet-per-minute attic fan with thermostat control, lifetime warranty, installation and a complete attic inspection (a $595 value).
• For $35, you get a complete attic inspection (a $125 value).

During a complete attic inspection, Superior Attic Fans tests undereave soffit vents, mushroom vents, and bathroom or dryer vents for signs of wear, tear, or addiction to Juicy Fruit. Garret gurus can also install an attic fan to expel up to 1,400 cubic feet of air from sub-roof spaces per minute, reducing the air conditioner’s workload so that it finally has enough free time to take up knitting. Besides energy savings, the fan also manhandles moisture that can cause warping and mildew, all while thoroughly breezifying attics as large as 2,000 square feet.