It's 100 degrees outside, you've been blasting your AC all day, and somewhere in a utility company office, a middle manager is looking at your account and smiling. The average American household doesn't have to choose between sweating and going broke this summer — but you'd never know it from the way most of us are running our air conditioners. According to cooling experts who spoke with NBC News, a handful of changes, some of which cost you absolutely nothing, can make a serious dent in that monthly gut-punch of an electric bill.
The Two-Degree Trick Nobody Is Using
Here's a free tip that will save you money starting today. Raise your thermostat by two or three degrees. That's it. That's the whole tip.
Lisa Purvins, vice president of Pro-Tech Heating and Cooling, told NBC News that most people genuinely cannot feel the difference between 72 and 74 or 75 degrees in a well-shaded home. What you absolutely will feel, in a good way, is the two to three percent reduction on your monthly bill. That doesn't sound like a lot until you're talking about a summer where temperatures across the country have been hitting 100 degrees for days at a stretch and your AC has been running like a freight train since Memorial Day.
Two or three percent compounded over three months of brutal summer heat is real money. And it costs you nothing except the four seconds it takes to tap a button on your thermostat.
Stop Paying to Cool an Empty House
If your air conditioner runs at full blast all day while you're sitting in an office or a coffee shop or literally anywhere that isn't your home, you are lighting money on fire. This is not a metaphor. You are converting dollars into slightly cooler air in a room where no one is sitting.
Purvins told NBC News that a programmable smart thermostat is the fix here. Set the temperature to rise while you're out and drop back down before you get home. Many models let you control everything from your phone, which means you can trigger the cool-down from your car on the way back. You arrive to a comfortable house. Your utility company does not get to buy a boat this summer. Everyone wins, except the utility company.
Smart thermostats run anywhere from $50 to $250 depending on features and brand. That is a one-time cost that pays for itself in a single summer for most households. The math on this one is not complicated.
Your Filter Is Probably Disgusting
When did you last change the filter on your central AC unit? If you have to think about it for more than three seconds, the answer is: too long ago.
Purvins was blunt with NBC News about this one. A clogged or dirty filter forces your air conditioner to work harder to push air through the system. Harder work means more energy. More energy means a higher bill. It also means the unit is under more stress, which accelerates wear and shortens its lifespan. So a $10 filter change, or a professional service call on your central unit, is doing triple duty: it cuts your monthly bill, it extends the life of the equipment, and it keeps the air quality in your home from being quietly terrible.
This is not exciting advice. Nobody wants to hear "change your filter" as the answer to their financial woes. But cooling professionals keep saying it because people keep ignoring it, and ignoring it keeps costing people money.
When Your AC Unit Is the Problem
Sometimes the fix isn't behavioral. Sometimes the machine itself is the issue. If your air conditioner is old, inefficient, or simply undersized for the space you're trying to cool, no amount of thermostat tweaking is going to save you.
Every expert NBC News consulted pointed to Energy Star-rated units as the gold standard. Steve Rosas, an environmental consultant and the chief operations officer and president of Omega Environmental, told NBC News that these government-backed ratings indicate units optimized to do the most cooling with the least energy. The Midea U-Shaped Inverter Window AC, for instance, claims up to 37 percent energy savings over standard units according to the brand, and at $480 it is not a trivial purchase. But for a large room that has been bleeding money all summer through an old rattling window unit, it can pay for itself faster than you'd think.
The LG 14,000 BTU Smart Window unit, currently sitting at about $530, goes further by connecting to the LG ThinQ app, meaning you get the smart thermostat functionality built directly into the AC unit itself. For people cooling larger spaces, that combination of efficiency and remote control is genuinely useful, not just a feature-list flex.
The Options That Won't Wreck Your Wallet Upfront
Not everyone can drop $500 on a new air conditioner this week. That is an entirely reasonable position to be in during an economy that has been doing its best impression of a rollercoaster with missing bolts.
NBC News flagged the Amazon Basics 5000-BTU Window AC at around $142 as a solid entry-level option for smaller rooms up to 150 square feet. It's not going to win any design awards, but it cools a bedroom, it has adjustable settings, the filter pulls out for easy cleaning, and the price is unlikely to cause a panic attack. For people who need portable flexibility, the Black + Decker 9,000 BTU Portable AC is currently marked down 29 percent to about $300 and works across rooms up to 400 square feet while also functioning as a dehumidifier, which matters a lot in parts of the country where the humidity is doing as much damage as the heat.
The point is there is a range here, from free behavior changes to moderate investments to serious equipment upgrades. You don't have to do all of it. You don't have to do any of it. But the electric bill is coming either way.
The Dingo Take
Here is the context the tips article politely leaves out: we are talking about this because summers are getting hotter, power grids are getting more stressed, and energy costs have been climbing steadily while wages have done their usual trick of not keeping pace. The advice from Purvins and Rosas and the other experts is genuinely useful and largely correct. But "raise your thermostat two degrees and change your filter" is a personal finance solution to what is also a structural problem. Utility rates don't go down. Summers don't get cooler. The burden of adapting to both keeps getting shifted onto individual households who are just trying to not melt.
That said, within the system we actually live in right now, this advice works. A smart thermostat is one of the cleaner no-brainer investments you can make as a homeowner or renter. Dirty filters are costing people money they don't have to spend. If your AC unit is a decade old and running constantly, replacing it with an Energy Star model will hurt upfront and help every month after that. These are real numbers with real outcomes.
So yes, go change your filter. Set a schedule on your thermostat. Maybe look at an Energy Star unit if yours is held together with optimism and old Freon. Just don't let anyone tell you that the reason your electric bill is crushing you is because you personally failed to optimize your cooling habits. The rates are set by companies with shareholders. The summers are getting worse for reasons that have nothing to do with whether you remembered to clean your window unit. You're allowed to be furious about that and also go buy a smart thermostat. Hold both.
