5 Air Leaks That Raise Your Summer Bill... Sealed with One $8 Roll of Weatherstripping

Second week of July. You're standing at the thermostat with a $284 electric bill in your hand. You drop the setting two degrees and call it handled. The compressor runs longer, the house never quite catches up, and the next bill reads $311. So you start spending. The $279 smart thermostat with the app and the learning schedule. It learns your schedule, it learns your habits, but it can't learn where your cold air goes. The $389 duct cleaning crew off the flyer, vacuum truck in the driveway, before-and-after photos of somebody else's ductwork. The vents blow cleaner. The meter doesn't care. And the bill climbs anyway. Here's what nobody in that parade says out loud: the machine was never the problem. Your air conditioner makes cold air just fine. Your house won't hold it. The air you're paying seventeen cents a kilowatt-hour to cool is sliding out through five gaps you could cover with your thumb. The thing that closes the worst of them is sitting on a hardware store shelf right now: a ten-foot roll of high-density rubber foam weatherstrip. $7.90. 28 years as a licensed home inspector, 10,000+ homes. No sponsors, no affiliate links, no upsell. Just the five gaps to find this weekend and the cheapest fix that actually moves your bill. For homeowners watching summer cooling costs climb, anyone who already bought the smart thermostat and the duct cleaning and saw nothing change, and DIY homeowners who want the fix that works before the fix that's expensive.