Summers can get hot, and as anyone who’s ever moved to a crowded city can tell you, it’s expensive to buy and keep an air conditioner. If you’ve bought a cheap air conditioner and want a little more fine tuning without shelling out more than $200, there’s hope yet.A simple plug-in called the ThinkEco SmartAC Modlet can give your “dumb” AC smart functionality: scheduling, temperature controls, and Wi-Fi connected controls. The Modlet comes in packages ranging from $80 for the Modlet alone to $140 for a Modlet and a remote.The great thing about having “smart” capabilities in an air conditioner is that you get finer, more automated control over your room temperature. If the temperature drops too low, you won’t have to shut the AC off manually — the Modlet will cut the power for you. If you’re coming work and want a cool home when you get back, you can schedule the AC to turn on before you get back.You really only need the Wi-Fi-capable Modlet at $80 for a complete setup — if you want the convenience or you don’t have a smartphone, the remote is there for an extra $60. And if you’re in the right place, you can get a Modlet for free.